Single Device As Transmitter And Receiver Patents (Class 398/138)
  • Patent number: 10261259
    Abstract: Consistent with the present disclosure, a coherent receiver PIC may be provided having waveguides that may be routed in a substantially U-shaped bend to feed both an incoming signal and a local oscillator signal into a 90-degree optical hybrid circuit, which may include a multi-mode interference (MMI) device. As a result, one or more local oscillator lasers may be provided between optical hybrid circuits in certain examples, and, in other examples, optical waveguides feeding optical signals to the optical hybrids are provided between the optical hybrid circuits. In both examples, a more compact receiver PIC layout may be achieved without waveguide crossings, that can be linearly scaled to accommodate reception of additional signals or channels without added complexity.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: April 16, 2019
    Assignee: Infinera Corporation
    Inventor: Peter W. Evans
  • Patent number: 10243659
    Abstract: An optical transceiver that provides an optical module, a circuit board, and a housing, where the housing encloses the optical module and the circuit board therein. The optical module provides lead terminals connected with circuits on the circuit board through a flexible printed circuit (FPC) board. The FPC board is bent at a bent portion corresponding to an end of the optical module as the top surface thereof becomes inner. The bent portion of the FPC board provides a bared portion in the back surface thereof, where the bared portion removes a ground pattern.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 26, 2019
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Shinta Kasai
  • Patent number: 10153846
    Abstract: An optical-communication module includes a transceiver to communicate with another optical-communication module (another module); and a control circuit to transmit a first signal to the another module at activation of the own module, execute a first control where a second signal transmitted to the first signal is received from the another module, and execute a second control after the first control, wherein one of the first and second control is a control to adjust an intensity of a signal from the transceiver to the another module based on a feedback signal from the another module to a signal from the transceiver, and wherein the other one of the first and second control is a control causing the another module to adjust a signal intensity from the another module to the transceiver by transmitting a feedback signal to the another module to a signal from the another module.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: December 11, 2018
    Assignee: FUJITSU LIMITED
    Inventor: Atsushi Miki
  • Patent number: 10090927
    Abstract: A signal processing device includes digital signal processing circuits. Each of the digital signal processing circuits includes: a regeneration circuit that regenerates a bit stream front an electric field information signal of an optical signal; an error correction circuit that corrects an error in the bit stream; an encoder circuit that generates an encoded bit stream from received data; and a generation circuit that generates an electric field information signal from the encoded bit stream. An electric field information signal or a bit stream is given from a regeneration circuit, an encoder circuit or a generation circuit in a first digital signal processing circuit to a second digital signal processing circuit. A regeneration circuit, an error correction circuit or a generation circuit in the second digital signal processing circuit processes the electric field information signal or the bit stream given from the first digital signal processing circuit.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: October 2, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Hisao Nakashima, Yoshitaka Nomura, Tomofumi Oyama, Yi Ge, Yuichi Akiyama, Yoshio Hirose, Takeshi Hoshida
  • Patent number: 10001598
    Abstract: An optoelectronic device includes an integrated circuit including electronic devices formed on a front side of a semiconductor substrate. A barrier layer is formed on a back side of the semiconductor substrate. A photonics layer is formed on the barrier layer. The photonics layer includes a core for transmission of light and a cladding layer encapsulating the core and including a different index of refraction than the core. The core is configured to couple light generated from a component of the optoelectronic device.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: June 19, 2018
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Effendi Leobandung, Ning Li, Jean-Olivier Plouchart, Devendra K. Sadana
  • Patent number: 9945949
    Abstract: A device for measuring a distance of a target by means of a telemeter comprises: a laser pulse emitter; a receiver of the laser echoes backscattered by the target, comprising, a spatial detection device which comprises at least one photodiode set up as integrator and is able to provide a spatial signal, and a temporal detection device which comprises at least one photodiode coupled to a transimpedance circuit and is able to provide a so-called temporal signal, means of processing of the spatial signal and of the temporal signal, comprising a unit for calculating the distance of the target, the temporal signal being in the form of a data frame which is the recording of data detected over a predetermined duration.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: April 17, 2018
    Assignee: THALES
    Inventor: Pascal Rousseau
  • Patent number: 9851520
    Abstract: An optical communication package includes a circuit layer, an optical component electrically coupled to the circuit layer to optically communicate outside of the package, and a thermoelectric cooler electrically coupled to the circuit layer and disposed to transfer heat from the optical component to the circuit layer.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: December 26, 2017
    Inventors: Vadim Gektin, Xing Fu, Chengpeng Yang
  • Patent number: 9817785
    Abstract: A standardized hot-pluggable transceiving unit comprising a housing, a SDI connector, and a signal conversion module. The housing is adapted to being inserted into a chassis of a hosting unit. The SDI connector receives a SDI signal comprising a video payload and at least one other payload. The signal conversion module is in the housing, and converts the SDI signal into a first IP flow for transporting the video payload and at least one other IP flow for transporting the at least one other payload. The generated IP flows are outputted from the SFP unit by one or more connectors different from the SDI connector. The other payload can be an audio or a metadata payload. In another aspect, a transceiving unit provides for combining a plurality of IP flows each comprising a different type of payload into a SDI signal.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: November 14, 2017
    Assignee: Embrionix Design Inc.
    Inventors: Renaud Lavoie, Eric Dudemaine
  • Patent number: 9703058
    Abstract: The present invention provides a package framework for a photoelectric conversion module, in which a photoelectric device is mounted on a printed circuit board such as a rigid-flex PCB and a HDI (High Density Interconnect) PCB, and then is connected, via a flexible printed circuit board, to a traditional printed circuit board having a driver chip or a digital signal processing integrated circuit disposed thereon. The present invention can prevent signal transmission interference caused by using bond wire, and can also maintain the stability of mechanical structure.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: July 11, 2017
    Assignee: NATIONAL APPLIED RESEARCH LABORATORIES
    Inventors: Chao-Ping Hsieh, Yin-Cheng Chang, Ta-Yeh Lin, Da-Chiang Chang
  • Patent number: 9703168
    Abstract: An optical module includes: a driver; an optical modulator; a connector that is electrically connected to either the driver or the optical modulator and is provided with an input/output terminal; and a flexible substrate that has flexibility, is connected to the connector, and transfers an electrical signal generated by the driver to the optical modulator, wherein in an end part connected to the connector, the flexible substrate has, on a first surface facing the input/output terminal, a signal-purpose wiring pattern used for transferring the electrical signal and a ground-purpose wiring pattern formed along the signal-purpose wiring pattern, and has, on a second surface that is different from the first surface, a ground electrode that partially covers the second surface and has a shorter electrical distance to the signal-purpose wiring pattern than an electrical distance between the signal-purpose wiring pattern and the ground-purpose wiring pattern.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: July 11, 2017
    Assignee: FUJITSU OPTICAL COMPONENTS LIMITED
    Inventors: Masaki Sugiyama, Yoshinobu Kubota
  • Patent number: 9432122
    Abstract: A bidirectional optical subassembly (BOSA) optical networking unit (ONU) generally includes a BOSA housing. A tunable laser is located in the BOSA housing and is configured to generate a first optical signal for transmission at a first selected wavelength based on temperature control. The tunable laser is a distributed feedback (DFB) laser diode. A thermal management device is also located in the BOSA housing and is configured to provide the temperature control. A photo diode is further located in the BOSA housing and is configured to receive a second optical signal at a second selected wavelength. The BOSA housing comprises an alloy of stainless steel or an alloy of Kovar.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: August 30, 2016
    Assignee: Applied Optoelectronics, Inc.
    Inventors: I-Lung Ho, Jun Zheng, Hung-Lun Chang
  • Patent number: 9335498
    Abstract: An optical device includes a light emitting element emitting light signal, a light coupling lens and a light receiving element. The light coupling lens includes a light input surface, a light output surface adjacent to the light input surface and a plurality of total reflective surfaces connected to the light input surface and the light output surface. The light input surface includes a first aspheric protrusion facing the light emitting element. The light output surface includes a second aspheric protrusion. Light signal emitted from the light emitting element enters the light coupling lens and collimated by the first aspheric protrusion to be parallel light signal. The parallel light signal is reflected by the total reflective surface and then collimated by the second aspheric protrusion to be convergent light signal. The light receiving element receives the convergent light signal.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: May 10, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Yi Hung
  • Patent number: 9252882
    Abstract: An optical fiber module includes: a casing; a first optical fiber having a portion in the casing; a first optical transmitter in the casing, wherein the first optical transmitter is configured to emit a first optical signal to the first optical fiber; a second optical fiber having a portion in the casing, wherein optical signals transmitted through the second optical fiber are independent from those transmitted through the first optical fiber; and a first optical receiver in the casing, wherein the first optical receiver is configured to receive a second optical signal from the second optical fiber.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: February 2, 2016
    Assignee: EZCONN CORPORATION
    Inventors: Tso Han Chien, Shih Chieh Kang
  • Patent number: 9225454
    Abstract: The specification describes an apparatus including a plurality of communication ports, each communication port coupled to a corresponding networking element, and a plurality of optical transceivers, each optical transceiver coupled to a corresponding communication port and including an optical receiver and an optical transmitter, wherein the optical transmitter can transmit an optical data signal having a carrier wavelength different than any other of the plurality of optical transmitters. A passive optical multiplexer/demultiplexer module is coupled to the transceivers and includes an optical multiplexer including a wavelength division multiplexing (WDM) output and a plurality of inputs, each input coupled to one of the plurality of transmitters, and an optical demultiplexer including a WDM input and a plurality of outputs, each output coupled to one of the plurality of receivers.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: December 29, 2015
    Assignee: Google Inc.
    Inventors: Hong Liu, Amin Vahdat, Ryohei Urata, Xiaoxue Zhao, Chris Johnson
  • Patent number: 9209896
    Abstract: An active network monitoring system for detecting an abnormality at a position between a communication office and a client includes a first monitoring module disposed on the communication office, a second monitoring module disposed on the client and an optical splitter. The first monitoring module has a first processor and a first laser diode. The second monitoring module has a second processor and a second laser diode. The first processor sends a digital signal to the first laser diode. The first laser diode modulates the digital signal into an optical signal and sends the optical signal to the second monitoring module via the optical splitter. The second laser diode converts the optical signal back to the digital signal, and sends the digital signal to the second processor to generate an identification signal of the client. The identification signal is transmitted to the communication office via the second laser diode.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: December 8, 2015
    Assignee: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chang-Chia Chi, Chen-Wen Tarn, Hong-Mao Lin
  • Patent number: 9146355
    Abstract: An array reflector comprising a waveguide and a high reflectivity mirror is disclosed. The waveguide has an input end and a reflective end. The high reflectivity mirror is disposed at the reflective end. The array reflector also includes n?1 mirrors arrayed along the length of the waveguide, wherein n is an integer greater than two.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: September 29, 2015
    Inventor: Dubravko Ivan Babic
  • Patent number: 9071361
    Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM&P); alarming; amplification, or the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. An optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the optical transceiver to operate with any compliant MSA host device with advanced features and functionality.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: June 30, 2015
    Assignee: Menara Networks, Inc.
    Inventors: Ming Ding, Fredrick Muya, Siraj Nour Elahmadi, Salam Elahmadi, Adam R. Hotchkiss, Gabriel E. Cardona
  • Patent number: 9042735
    Abstract: An optical transceiver of one embodiment includes a transmitter optical subassembly to transmit an optical signal, a receiver optical subassembly to receive an optical signal, a mother board, a daughter board, and a housing. The mother board mounts electronic circuits that electrically communicate with the optical transmitter optical subassembly and the receiver optical subassembly. The daughter board mounts other electronic circuits that electrically communicate with the optical transmitter optical subassembly and the receiver optical subassembly. The daughter board has an extra area mounting a portion of the other electronic circuits. The housing defines a space for installing the optical transmitter optical subassembly, the receiver optical subassembly, the mother board, and the daughter board. The extra area is disposed outside the space.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: May 26, 2015
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Jignesh Shah, Phillip Edwards
  • Patent number: 9042736
    Abstract: Intrapersonal communication systems and methods that provide an optical digital signal link between two or more local devices are disclosed. In some embodiments, the system includes a first signal converter disposed at a first end of the optical digital signal link and configured to convert between electrical digital signals from a first local device and optical digital signals from the optical digital signal link. The system can include an optical connector having a non-contact portion configured to couple optical digital signals between the first signal converter and the optical digital signal link across a gap. The system can include a second signal converter disposed at a second end of the optical digital signal link and configured to convert between electrical digital signals from the second local device and optical digital signals from the optical digital signal link.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: May 26, 2015
    Assignee: N2 IMAGING SYSTEMS, LLC
    Inventor: David Michael Masarik
  • Patent number: 9031410
    Abstract: An optical network unit according to the present invention is provided as comprising a configuration that component units built therein are grouped for at least two sheets of substrate modules and arranged thereat. There are provided individual embodiments: (a) arranging an L2 layer and a part of the component unit of an L1 layer at a first substrate module, meanwhile, arranging the left part of the component unit of the L1 layer at a second substrate module; (b) arranging the component units of the L1 layer and of the L2 layer at the first substrate module and the second substrate module individually by grouping therefor; and (c) arranging the component units of the L2 layer and of the L1 layer at the first substrate module and the second substrate module respectively.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: May 12, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Kazutaka Shimoosako, Kunio Odaka, Katsuya Aboshi
  • Patent number: 9025962
    Abstract: A system for transmitting an optical signal between a host and a device according to a SATA protocol. The system comprises a transmitting-side converter for generating a logic one voltage value responsive to a data one value from an information source, for generating a logic zero voltage value responsive to a data zero value from the information source, for generating an idle state logic voltage value, wherein the idle state logic voltage value is (logic one voltage value+logic zero voltage value)/2, the transmitting-side converter comprising only linear functions to preserve the idle state logic voltage value, and an electrical-to-optical converter for converting the logic one, logic zero and the idle state logic voltage values to an optical signal further comprising respective logic one, logic zero and idle state optical values and for supplying the optical signal to an optical communications medium.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: May 5, 2015
    Inventor: James V Wernlund
  • Patent number: 9025951
    Abstract: In general, techniques are described for provisioning network devices in an Ethernet-based access network. For example, an access node located in an Ethernet-based access network positioned intermediate to a back office network and a customer network may implement the techniques. The access node comprises a control unit that discovers a demarcation point device that terminates the access network of the service provider network at the customer network. The control unit of the access node implements an Ethernet protocol to provide layer two network connectivity between the service provider network and the customer network, authenticates the demarcation point device based on a unique identifier assigned to the demarcation point device and, after successfully authenticating the demarcation point device, provisions the demarcation point device.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: May 5, 2015
    Assignee: Calix, Inc.
    Inventors: Berkay Baykal, Shaun N. Missett
  • Patent number: 9014566
    Abstract: An optical component contains a tunable laser. The tunable laser provides an optical local oscillator signal, and the tunable laser is directly modulated to provide a modulated optical data signal. In this manner we have optimization of the channel wavelength and obtain an optimized electrical and optical bandwidth utilization. Furthermore, a method for data processing is suggested.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: April 21, 2015
    Assignee: Xieon Networks S.a.r.l.
    Inventor: Erich Gottwald
  • Patent number: 9008518
    Abstract: A system includes an optical transmitter package comprising an optical transmitter to generate optical transmission signals based on electrical transmission signals. The system also includes an optical receiver package comprising an optical receiver to generate electrical reception signals based on optical reception signals. The system further includes a printed circuit board (PCB) on which the optical transmitter package and the optical receiver package are mounted. The PCB includes a heat generating circuit component. The optical transmitter package can be mounted to the PCB to subjected to less heat from the heat generating circuit component than the optical receiver package.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 14, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Michael Renne Ty Tan, Glenn C. Simon, Sagi Varghese Mathai
  • Patent number: 9002208
    Abstract: An optical transceiver system includes a transmitter emitting a first light beam having a first wavelength, a receiver receiving a second light beam having a second wavelength; an optical fiber transmitting the first light beam and the second light beam; and a light guide member. The light guide member includes a lens block having a bottom surface facing toward both the transmitter and the receiver, a first side surface slanted relative to the bottom surface, and a second side surface facing toward the optical fiber, a first lens and a second lens formed on the bottom surface for optically coupled with the respective transmitter and receiver, a third lens formed on the second side surface for optically coupled with the optical fiber, and a light guide portion embedded in the lens block.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: April 7, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Yi-Zhong Sheu
  • Patent number: 8985871
    Abstract: An optical module includes a housing, an optical adapter attached to an end portion of the housing, and an optical transmitter and receiver assembly mounted in the housing. The optical transmitter and receiver assembly includes a TOSA including a plurality of light-emitting elements, a ROSA including a light-receiving element, and a circuit board electrically connected to the TOSA and the ROSA. The TOSA further includes a TOSA base having an opposing side surface on which the plurality of light-emitting elements are oppositely arranged so as to form at least one pair. The circuit board includes a first flexible substrate mounting the TOSA and a first rigid substrate connected to the first flexible substrate. The first flexible substrate includes a TOSA base facing-portion facing the TOSA base, and a connection portion extending from both end portions of the TOSA base-facing portion and connected to the plurality of light-emitting elements.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: March 24, 2015
    Assignee: Hitachi Metals, Ltd
    Inventors: Kenji Mizobuchi, Ryuta Takahashi
  • Patent number: 8989588
    Abstract: An optical transceiver includes an optical IC coupled to a processor IC. For transmit, the optical IC can be understood as a transmitter IC including a laser device or array. For receive, the optical IC can be understood as a receiver IC including a photodetector/photodiode device or array. For a transmitter IC, the processor IC includes a driver for a laser of the transmitter IC. The driver includes an equalizer that applies high frequency gain to a signal transmitted with the laser device. For a receiver IC, the processor IC includes a front end circuit to interface with a photodetector of the receiver IC. The front end circuit includes an equalizer that applies high frequency gain to a signal received by the receiver IC. The driver can be configurable to receive a laser having either orientation: ground termination or supply termination.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: March 24, 2015
    Assignee: Intel Corporation
    Inventors: Gil Afriat, Lior Horwitz, Dror Lazar, Assaf Issachar, Alexander Pogrebinsky, Adee O. Ran, Ehud Shoor, Roi Bar, Rushdy A. Saba
  • Patent number: 8989589
    Abstract: An apparatus in one embodiment includes a transceiver housing operable to be inserted into a port of a host system, the port comprising at least a first channel and a second channel. The transceiver housing may be a compact small form-factor (SFP) pluggable module housing. The apparatus also includes a printed circuit board mounted in the transceiver housing and an electrical interface of the printed circuit board operable to interface with the port of the host system. The electrical interface includes a first transmit pin and a first receive pin configured to interface with the first channel of the port and a second transmit pin and a second receive pin configured to interface with the second channel of the port. A first connector couples the first transmit pin and the second receive pin, and a second connector couples the second transmit pin and the first receive pin.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: March 24, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Farrokh Mottahedin, Darren K. Hopcroft, Brice D. Achkir
  • Patent number: 8989590
    Abstract: One embodiment provides a pluggable optical line terminal (OLT). The OLT includes a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from a number of optical network units (ONUs), an OLT chip coupled to the optical transceiver and configured to communicate with the ONUs through the optical transceiver, and a pluggable interface coupled to the OLT chip and configured to electrically interface between the OLT chip and a piece of network equipment. The optical transceiver, the OLT chip, and the pluggable interface are contained in an enclosure complying with a form factor, thereby allowing the pluggable OLT to be directly plugged into the network equipment.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: March 24, 2015
    Assignee: Broadcom Corporation
    Inventor: Jaroslaw Wojtowicz
  • Patent number: 8983302
    Abstract: An apparatus comprises an optical transmitter; an optical detector configured to receive optical signals from an optical fiber; an optical splitter having a first port, a second port coupled to the optical detector by the optical fiber, and a third port coupled to the optical transmitter; and a two stage amplifier system connected to an output of the optical detector. An input surface of the optical detector may have a diameter that is substantially equal to a diameter of a core in the optical fiber. The diameter of the input surface of the optical detector reduces capacitance and reduces signal distortion. The optical splitter may be configured to receive a first optical signal at the first port. The optical splitter may be configured to send the first optical signal to the second port and send a second optical signal received at the third port to the first port.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: March 17, 2015
    Assignee: The Boeing Company
    Inventor: Eric Yuen-Jun Chan
  • Patent number: 8974125
    Abstract: In an opto-electronic system having one or more optical transceiver modules and an enclosure, air is forced through the interior of the transceiver module to dissipate heat generated by the opto-electronic and electronic elements.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 10, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Laurence R. McColloch, David J. K. Meadowcroft, Paul Yu
  • Publication number: 20150063820
    Abstract: A bidirectional optoelectronic device comprises a photodetector, a light source, and a drive circuit for the light source. The light source has first and second electrical leads for receiving an input electrical signal, and the drive circuit can be arranged to apply first and second portions of the input electrical signal to the first and second electrical leads, respectively, wherein the second portion of the input electrical signal is a scaled, inverted substantial replica of the first portion of the input electrical signal. A protective encapsulant can be applied that includes hollow dielectric microspheres to reduce electrical cross-talk, and that can further include an optical absorber to reduce optical cross-talk. A waveguide substrate of the device can include light collector(s) or trap(s) for redirecting and attenuating portions of optical signals propagating in waveguide layers on the substrate but not guided by a waveguide.
    Type: Application
    Filed: August 31, 2014
    Publication date: March 5, 2015
    Inventor: Joel S. Paslaski
  • Patent number: 8971720
    Abstract: A communications networking having reduced transmission latency and improved reliability is described. To reduce signal transmission latency, network management data is removed from a data stream to prioritize the transmission of payload data at higher transmission rates. Management data is returned to the data stream in such a way that it minimizes an impact to payload transmission rates. To improve communications network reliability, the network is configured to form a primary communication path and a redundant communication path. Upon failure of a transceiver at one node, the network engages redundant transceivers on a per-node basis thereby using a segment of the redundant communication path. The data stream is returned to the primary communication path upon circumvention of the failed transceiver.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 3, 2015
    Assignee: AOptix Technologies, Inc.
    Inventors: Eric Saint Georges, Joseph Shiran, Scott Alan Young
  • Patent number: 8971718
    Abstract: A clock and data recovery (CDR) circuit, a method of recovering a clock and data from a received raw data stream and a BI-PON optical network transceiver (ONT) receiver front-end incorporating the CDR circuit. In one embodiment, the CDR circuit includes: (1) a line rate CDR circuit having a voltage controlled oscillator, the line rate CDR circuit configured to recover a raw data stream at a receiving line rate, (2) a fixed-rate down-sampler coupled to the line rate CDR circuit and configured to down-sample the raw data stream based on a fixed-rate and (3) a variable-rate down-sampler coupled to the fixed-rate down-sampler and configured further to down-sample the raw data sample based on a variable-rate.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: March 3, 2015
    Assignee: Alcatel Lucent
    Inventors: Hungkei Chow, Dusan Suvakovic, Christophe Van Praet, Guy Torfs, Xin Yin, Zhisheng Li
  • Patent number: 8971717
    Abstract: An optical system has an optical emitter that transmits an optical signal through an optical fiber. An optical detector detects light from the fiber and provides an analog signal indicative of such light. A crosstalk cancellation element is configured to receive an electrical signal from the optical emitter and to adjust such signal in order to form a cancellation signal that models the optical and/or electrical crosstalk affecting the analog signal. The cancellation signal is subtracted from the analog signal thereby removing optical and/or electrical crosstalk from the analog signal.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: March 3, 2015
    Assignee: ADTRAN, Inc.
    Inventor: Daniel M. Joffe
  • Patent number: 8948604
    Abstract: The present disclosure generally pertains to optical communication apparatuses having field-tunable power characteristics. In one exemplary embodiment, an optical communication apparatus has an optical transmitter. The optical transmitter is coupled to logic that receives a user input indicative of a desired transmit mode for the transmitter, and the logic then dynamically tunes the transmitter's output power according to the selected transmit mode. In addition, the optical communication apparatus may have an optical receiver for receiving optical signals. The sensitivity of the receiver is controlled by a bias voltage that is applied to the receiver by the logic. The logic is configured to receive a user input indicative of a desired receive mode and then to tune the receiver's sensitivity via the bias voltage according to the selected receive mode.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: February 3, 2015
    Assignee: Adtran, Inc.
    Inventors: Leif J. Sandstrom, Phillip Stone Herron
  • Patent number: 8929744
    Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM&P); alarming; amplification, and the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. An optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the optical transceiver to operate with any compliant MSA host device with advanced features and functionality. The optical transceiver can include CFP and variants thereof (e.g., CFP2, CDFP, CXP), OIF-MSA-100GLH-EM-01.0, CCRx (Compact Coherent Receiver), Quad Small Form-factor Pluggable (QSFP) and variants thereof (e.g., QSFP+, QSFP2), 10×10 MSA, XFP, XPAK, XENPAK, X2, XFP-E, SFP, SFP+, 300-pin, and the like.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: January 6, 2015
    Assignee: Menara Networks, Inc.
    Inventors: Siraj Nour El-Ahmadi, Salam El-Ahmadi, Adam R. Hotchkiss, Gabriel E. Cardona
  • Patent number: 8929742
    Abstract: An optical communication module in which the pin arrangement can be applied flexibly. An optical communication module has an outer shape formed based on normal standards and which is able to communicate with a host-side circuit board, etc. to which it is fitted, via a predetermined communication interface; wherein the optical communication module exchanges input/output I/F information with the circuit board, etc., and the communication interface can be switched to another communication interface based on these input/output I/F information.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: January 6, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventor: Masayuki Miura
  • Publication number: 20150003839
    Abstract: An optical transceiver includes: a main board; a flexible board provided on a surface of the main board; an optical module mounted on the flexible board; and an optical fiber connected to the optical module. A position of the flexible board with respect to the main board is freely adjusted in a length direction of the optical fiber.
    Type: Application
    Filed: January 11, 2013
    Publication date: January 1, 2015
    Inventor: Yuuji Minota
  • Publication number: 20140369693
    Abstract: Methods and systems for a photonic interposer are disclosed and may include receiving one or more continuous wave (CW) optical signals in a silicon photonic interposer from an optical source external to the silicon photonic interposer. The received CW optical signals may be processed based on electrical signals received from a CMOS electronics die bonded to the interposer, and modulated optical signals may be received in the interposer via optical couplers on the interposer. Electrical signals may be generated in the interposer based on the received modulated optical signals, and may be communicated to the CMOS electronics die. The generated electrical signals to may be communicated to the CMOS electronics die via copper pillars. The CW optical signals may be received in the interposer from an optical source assembly coupled to the interposer. The CW optical signals may be received from optical fibers coupled to the interposer.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Mark Peterson, Greg Young, Peter De Dobbelaere
  • Patent number: 8909058
    Abstract: An optical transceiver system includes a transmitter transmitting out a first light beam with a first wavelength, a receiver receiving a second light beam with a second wavelength; an optical fiber transmitting the first light beam and the second light beam; and a light guide member. The light guide member includes a lens block having a first side surface facing toward both the transmitter and the receiver, and a second side surface facing toward the optical fiber. A first lens portion and a second lens portion formed on the first side surface for optically coupling the respective transmitter and receiver, a third lens portion formed on the second side surface for optically coupling the optical fiber, and a wavelength divisional multiplexer embedded in the lens block. The wavelength divisional multiplexer receives and divides the first light beam and the second light beam.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: December 9, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Yi-Zhong Sheu
  • Patent number: 8909054
    Abstract: Embodiments of the present invention relate to a bi-direction optical sub-assembly and an optical transceiver. A transmitter in the bi-direction optical sub-assembly is configured to transmit a first communication signal or a detection signal, where the first communication signal or the detection signal is input from a first end of a first optical path and output from a second end of the first optical path, enters a second end of a third optical path through reflection of a WDM optical filter, and is input from a first end of the third optical path to an optical fiber. A second communication signal received by the optical fiber is input from the first end of the third optical path and output from the second end of the third optical path, and the second signal is received by a BOSA receiver through transmission of the WDM optical filter.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: December 9, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Xueming Zhang
  • Patent number: 8903247
    Abstract: A bidirectional interface for multimode optical fiber includes a receive/transmit optical fiber port operable to connect to a multimode optical fiber, a wavelength separating module in communication with the receive/transmit optical fiber port, an optical receiver module in communication with the wavelength separating module and configured to receive optical signals at a first wavelength via the wavelength separating module and the receive/transmit optical fiber port, and an optical transmit module in communication with the wavelength separating module and configured to transmit at a second wavelength via the wavelength separating module and the receive/transmit optical fiber port.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: December 2, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Marco Mazzini, Cristiana Muzio, Alessandro Sguazzotti, Federico Fontanella
  • Patent number: 8903246
    Abstract: Multiple pins extend from the outside to the inside of an optical sub-assembly. A light receiver or a light transmitter is arranged inside the optical sub-assembly. A receiver circuit and transmitter circuit (TX) are arranged inside the optical sub-assembly and connected between the multiple pins and the light receiver and the light transmitter. The receiver circuit comprises a receiver communication interface in order to transform an output signal of the light receiver into a communication signal, and wherein the transmitter circuit comprises a transmitter communication interface to transform a communication signal into an input signal of the light transmitter. A control interface is connected with the receiver circuit and the transmitter circuit arranged inside the optical sub-assembly, wherein the control interface is connectable to two of the multiple pins.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: December 2, 2014
    Assignee: GigOptix-Helix AG
    Inventors: Jörg Wieland, Martin Bossard
  • Patent number: 8891971
    Abstract: Implementations of an apparatus including an optical circuit switch (OCS) having a plurality of OCS input/output ports, at least one optical circulator having a port optically coupled to a corresponding one of the plurality of OCS input/output ports and a reflection mitigation positioned in the optical path between each optical circulator port and its corresponding OCS input/output port and/or in the optical path inside the OCS. A corresponding optical transceiver is optically coupled to each of the at least one optical circulators. Each optical transceiver includes a transmitter optically coupled to one port of the optical circulator and a receiver optically coupled to another port of the optical circulator.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 18, 2014
    Assignee: Google Inc.
    Inventors: Hong Liu, Ryohei Urata, Christopher L. Johnson
  • Patent number: 8886047
    Abstract: Exemplary optical communication devices are described which, in certain embodiments, derive power optically from and communicate optically to a reading device. The communication devices may also receive data from modulated light from the reading device to achieve a bi-directional optical communication link between the self-powered optical communication device and the reading device. In some embodiments, the communication device is powered by ambient light, such as sunlight, captures data from a sensor, and communicates the stored data some time later to a reading device. In some embodiments, the communication device is powered locally and communicates through air, optical fiber, or other medium with another communication device.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: November 11, 2014
    Assignee: Ketra, Inc.
    Inventor: David J. Knapp
  • Patent number: 8885992
    Abstract: At the time of assembly of an optical transmission/reception module, a test variable wavelength light source 22 for outputting a test light signal is connected to a connector 8 of an optical fiber 7, and a large-diameter PD 23 measures a transmission loss in a light wavelength band limiting filter 12 while a rotational position determining unit 24 rotates a fiber ferrule 5, so that the rotational position determining unit 24 determines the rotational position ?loss-min of the fiber ferrule 5 which minimizes the transmission loss in the light wavelength band limiting filter 12, and aligns the fiber ferrule 5 at the rotational position ?loss-min.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: November 11, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tamon Omura, Nobuo Ohata, Masatoshi Katayama
  • Patent number: 8879918
    Abstract: A pluggable platform in small form factor is described. In one embodiment, the pluggable platform is designed to accommodate passive optical devices and may retrofit into an existing system. Further, the pluggable platform in small form factor is provided with an interface for tractability of the passive optical devices being supported.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 4, 2014
    Assignee: Alliance Fiber Optic Products, Inc.
    Inventors: Xinzhong Wang, Andy Zhou, Yao Li
  • Patent number: 8873967
    Abstract: An optical interconnection module (100) for connecting to a media converter module (20) as part of a hybrid electrical-optical network (10) is disclosed. The optical interconnection module includes a transmitter connector (136T) having transmit ports (POT(i)) and a receiver connector having receive ports (POR(i)). The optical interconnection module also has transmit/receive ports (POF(i)) that are optically connected via a set (F) of fibers (142) to the transmit and receive ports of the transmitter and receiver connectors using one of two port configurations. Hybrid electrical-optical networks that utilize a trunk cable (60) to connect the media converter module to the optical interconnection module are also disclosed.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: October 28, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: Ray S. Barnes, Robert W. Dennis, Alan W. Ugolini
  • Patent number: 8873966
    Abstract: An optical communication device, such as a transceiver, can send outgoing information over an optical link and receive incoming information via the link. The link, for example an optical fiber, can simultaneously transmit outgoing light carrying outgoing information and incoming light carrying incoming information. The communication device can comprise a detector outputting electrical signals in response to receiving optical signals, effectively converting signals from the optical domain to the electrical domain. The detector can receive a mixture of the incoming and the outgoing light, thereby producing an electrical signal containing imprints of both the incoming data and the outgoing data. The communication device can process the electrical signal to differentiate between the incoming data and the outgoing data.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: October 28, 2014
    Assignee: Cirrex Systems, LLC
    Inventor: Michael L. Wach