Patents Examined by Danny Leung
  • Patent number: 9769087
    Abstract: A device may receive optical network information associated with an optical network, and may determine a user associated with network resources of the optical network. The network resources may be shared for use by multiple users, including the user. The device may store the optical network information and information that identifies a relationship between the user and the network resources. The device may receive a request for at least a portion of the optical network information associated with the user and the network resources. The device may identify the network resources, associated with the user, based on storing the optical network information and the information that identifies the relationship The device may provide the at least the portion of the optical network information, including information associated with the network resources associated with the user, based on identifying the network resources.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: September 19, 2017
    Assignee: Infinera Corporation
    Inventors: Manish K. Agarwal, Naveen Narasimha Hegde, Pankaj Sajnani, Sudhanshu Verma
  • Patent number: 9768881
    Abstract: Devices and techniques for integrated optical data communication. An optical receiver may include a photodetector and a differential amplifier. The photodetector is coupled to an optical waveguide. The optical waveguide is configured to provide an optical signal encoding data. A first terminal of the differential amplifier is coupled to receive a photodetection signal from the photodetector. A second terminal of the differential amplifier is coupled to receive, from a noise measurement unit, a reference signal representing a noise component of the photodetection signal. The differential amplifier is configured to provide an amplifier signal encoding at least some of the data.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 19, 2017
    Assignee: Massachusetts Institute of Technology
    Inventors: Michael Stephen Georgas, Jason Scott Orcutt, Vladimir Marko Stojanovic
  • Patent number: 9768902
    Abstract: Systems and methods to control optical signals in a spectrally overlapped, flexible grid spectrum system include receiving measured power within a control bandwidth for an optical signal, wherein the control bandwidth is less than a spectral occupancy of the optical signal and equal to or greater than a resolution bandwidth of a measurement device configured to measure the measured power; and controlling the optical signal based on the measured power and a target power within the control bandwidth. The optical signals can include Nyquist spaced or super Nyquist spaced signals in a media-channel.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: September 19, 2017
    Assignee: Ciena Corporation
    Inventors: Choudhury A. Al Sayeed, Edward Chen, Paul Chedore, Scott Kohlert
  • Patent number: 9762319
    Abstract: Techniques are described for determining, with a first optical node, a correction factor indicative of an amount of optical power loss that a Raman amplifier in a second optical node causes in an optical signal having a first wavelength that is transmitted by the first optical node and received by the second optical node, transmitting, with the first optical node to the second optical node, information, based on the determined correction factor, that is to be used for determining a gain of the Raman amplifier, and transmitting, with the first optical node to the second optical node, an optical signal having a second wavelength that is to be amplified by the Raman amplifier.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: September 12, 2017
    Assignee: Juniper Networks, Inc.
    Inventors: Qiang Wang, Yang Yue, Bo Zhang
  • Patent number: 9762327
    Abstract: A single-core optical transceiver is an optical transceiver for transmitting or receiving an optical signal through a single optical fiber. The single-core optical transceiver has a light emitting device for transmitting the optical signal and a light receiving device for receiving the optical signal. The light emitting device is an LED configured including a sapphire substrate arranged on a light receiving surface of the light receiving device so as to be coaxial with the light receiving surface, and a nitride semiconductor layer laid on the sapphire substrate. Even with the light emitting device being arranged on the light receiving surface of the light receiving device, the optical signal from the optical fiber can be received on the entire area of the light receiving surface, so as to adequately improve the light sensitivity.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: September 12, 2017
    Assignees: HAMAMATSU PHOTONICS K.K., Nanjing Guanglu Electronics Co., Ltd., CHINA ELECTRIC POWER RESEARCH INSTITUTE
    Inventors: Yuto Inagaki, Takayuki Suzuki, Guo Xiang Hu, Weimin Hao
  • Patent number: 9762324
    Abstract: A method implemented by a wireless fronthaul unit, the method comprises aggregating a plurality of first wireless channel signals to produce a first aggregated signal via digital frequency-domain mapping (FDM), wherein the first wireless channel signals are positioned in the first aggregated signal in non-overlapping first frequency bands, each non-overlapping first frequency band having a first bandwidth and a center frequency, wherein each respective center frequency is an odd integer multiple of a lowest center frequency, converting the first aggregated signal into a first modulated signal, and transmitting the first modulated signal to a wireless fronthaul link.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: September 12, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xiang Liu, Frank Effenberger, Lei Zhou, Huafeng Lin
  • Patent number: 9749600
    Abstract: Systems and methods for optical narrowcasting are provided for transmitting various types of content. Optical narrowcasting content indicative of the presence of additional information along with identifying information may be transmitted. The additional information (which may include meaningful amounts of advertising information, media, or any other content) may also be transmitted as optical narrowcasting content. Elements of an optical narrowcasting system may include optical transmitters and optical receivers which can be configured to be operative at distances ranging from, e.g., 400 meters to 1200 meters. Moreover, the elements can be implemented on a miniaturized scale in conjunction with small, user devices such as smartphones, thereby also realizing optical ad-hoc networking, as well as interoperability with other types of data networks. Optically narrowcast content can be used to augment a real-world experience, enhance and/or spawn new forms of social-media and media content.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: August 29, 2017
    Assignee: SureFire LLC
    Inventors: Narkis E. Shatz, John C. Bortz
  • Patent number: 9742497
    Abstract: A semiconductor arrangement and a method of forming the same are described. A semiconductor arrangement includes a first layer including a first optical transceiver and a second layer including a second optical transceiver. A first serializer/deserializer (SerDes) is connected to the first optical transceiver and a second SerDes is connected to the second optical transceiver. The SerDes converts parallel data input into serial data output including a clock signal that the first transceiver transmits to the second transceiver. The semiconductor arrangement has a lower area penalty than traditional intra-layer communication arrangements that do not use optics for alignment, and mitigates alignment issues associated with conventional techniques.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: August 22, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LIMITED
    Inventors: Hung-Chang Yu, Kai-Chun Lin, Yu-Der Chih, Ying-Hao Kuo
  • Patent number: 9742493
    Abstract: Methods and systems are described for sampling an LCOM message and accurately reconstructing the entire LCOM message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. These including receiving segments of an LCOM signal from at least two repetitions of the LCOM signal. The location of each segment within the LCOM signal is identified and each segment is stored in a corresponding location in a buffer configured to have a length equal to the LCOM signal. The buffer is a ring buffer, in some embodiments.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: August 22, 2017
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Christian Breuer, Anant Aggarwal, Barry Stout
  • Patent number: 9735891
    Abstract: A system and method involve propagating, from one or more optical sources connected to a platform, more than one optical signal through a surrounding medium towards a reflective surface. Reflected optical signals, representing the propagated optical signals reflected off of the reflective surface, are then detected using a detection system coupled to the platform. An ideal optical wavelength is then selected for optical communication from the platform within the surrounding medium based upon one or more characteristics of the detected reflected optical signals.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: August 15, 2017
    Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
    Inventors: Burton H. Neuner, III, Ryan P. Lu, Ayax D. Ramirez, Michael G. Lovern
  • Patent number: 9735888
    Abstract: In an optical receiver, an optical local oscillator (LO) frequency is generated. A modulated optical frequency is received at the optical receiver. An LO-signal frequency offset between the received modulated optical frequency and the optical LO frequency is determined. A determination is made as to whether the LO-signal frequency offset is in one of multiple predefined non-overlapping target windows that cover respective non-zero LO-signal frequency offsets. If it is determined that the LO-signal frequency offset is not in one of the target windows, the optical LO frequency is tuned to drive the LO-signal frequency offset toward one of the target windows to ensure the LO-signal frequency offset is non-zero.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: August 15, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Christopher Fludger, Thomas Duthel, Joerg Leykauf, Karsten Michaelsen
  • Patent number: 9720243
    Abstract: An example beam splitting apparatus is assembled from multiple prisms that are assembled together along respective mating surfaces to form a single monolithic optical device. The beam splitting apparatus includes optical features, such as dichroic and reflective surfaces, that define optical paths for light that enters the beam splitting apparatus. The optical features allow photons in the light to be directed along different optical paths based on their wavelengths. The optical features in the beam splitting apparatus are provided by coatings, films, and/or surface treatments applied to any of the faces of the prisms. In particular, coatings, films, and/or surface treatments are applied to the mating surfaces of the prisms so that the optical features are internal to the assembled monolithic optical device. The beam splitting apparatus may be implemented in a communication terminal that exchanges data modulated light according to frequency-division duplex communications.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: August 1, 2017
    Assignee: X Development LLC
    Inventors: Robert Todd Belt, Nam-hyong Kim, Baris Ibrahim Erkmen, Edward Allen Keyes
  • Patent number: 9715256
    Abstract: One embodiment provides an apparatus, including: a transmitter; and a hinge, comprising: a receiver; the receiver being optically coupled to the transmitter and receiving data from the transmitter. Other aspects are described and claimed.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: July 25, 2017
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Robert James Kapinos, Joseph Bryan Morris, Scott Wentao Li, Joaquin F. Luna
  • Patent number: 9712255
    Abstract: A system and a method for communication in a submarine communication network are disclosed. The communication system comprises a branching unit, an optical cable segment comprising a first conductor path and a second conductor path, a repeater and an insulation and loopback circuit. The branching unit is configured for enabling exchange of optical communication data and electric power between an optical trunk cable of the submarine communication network and the cable segment. The insulation and loopback circuit is configured to receive the optical communication data and the electric power through said first conductor path, direct at least a part of said electric power back to the trunk cable through said second conductor path and the branching unit, and direct said optical communication data to a remote platform through a third conductor path.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: July 18, 2017
    Assignee: Alcatel Lucent
    Inventors: Ronan Michel, Cyril Brzozowski
  • Patent number: 9706426
    Abstract: A method, a controller, and a network provide Visible Light Communications Personal Area Network (VPAN) and Wireless Local Area Network (WLAN) interworking and mobility management systems and methods. The method includes receiving data traffic from both a Wireless Local Area Networking (WLAN) domain and a Visible Light Communications (VLC) domain, uniquely identifying, in a controller, a device in both the WLAN domain and the VLC domain as a same device using an addressing scheme associated with both the WLAN domain and the VLC domain, wherein the device is configured to operate in both the WLAN domain and the VLC domain, and providing data traffic to the device via one of the WLAN domain and the VLC domain based on a plurality of factors.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: July 11, 2017
    Assignee: EXTREME NETWORKS, INC.
    Inventors: Jeelan Poola, Somesh Agrawal, Prasad K, Sundaresan Sundaram
  • Patent number: 9705628
    Abstract: The present applies to digital wavelength converters that convert, independently of the format in which optical data may be encoded, an input waveform at a first wavelength to an output waveform at a second wavelength. When operating in an environment where an input waveform has a pilot tone associated thereto, the method and system of the present disclosure allows for the removal of the pilot tone from the input waveform, and also allows for the addition of another pilot to the output waveform.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: July 11, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhiping Jiang, Zhuhong Zhang, Xuefeng Tang
  • Patent number: 9698908
    Abstract: Light-based communication (LCom) techniques are disclosed for decoding LCom signals using a sub-raster line sampling process. In accordance with an embodiment, a system is provided that is configured to sub-sample each raster line to capture data at a much faster sampling rate, which in turn allows for longer LCom messages and faster response time. The sub-sampling of the raster lines can be carried out in a rolling shutter mode. Without such sub-sampling of the raster lines, decoding the LCom signals may be effectively limited by the raster line frequency, given that the raster line sampling rate is tied to the horizontal resolution of the camera. However, by sub-sampling the raster lines as provided herein, the sampling rate can be a combination of horizontal and vertical pixels which represents a substantial improvement over standard raster line based rolling shutter modes.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: July 4, 2017
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Christian Breuer, Anant Aggarwal, Barry Stout
  • Patent number: 9692514
    Abstract: Embodiments herein relate to a method in a network node configured in an optical network for enabling a first unit to connect ad-hoc to a second unit in a system configured for remote radio units and main units. The network node receives a connection request from the first unit over the optical network. The network node establishes a connection, to the first unit, for control data. The network node stores control data regarding the first unit. The control data is retrieved from the first unit over the established connection and wherein the control data enables the first unit to connect/be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: June 27, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventor: Kim Laraqui
  • Patent number: 9692520
    Abstract: An optical modulator combines and inputs a signal light propagating through the optical network and a control light having information concerning the optical network to a nonlinear optical medium. The optical modulator modulates the signal light according to changes in intensity of the control light, in the nonlinear optical medium.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: June 27, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Shigeki Watanabe
  • Patent number: 9692519
    Abstract: An apparatus includes an optical transmitter configured to provide an optical signal amplitude-modulated among M different levels. A constellation control module is configured to provide a drive signal to control the optical signal. A feedback module is configured to receive a measure of spacing between amplitude peaks of a symbol constellation of the optical signal. The feedback module is further configured to regulate the constellation control module to adjust the optical signal in response to the measure of spacing.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 27, 2017
    Assignee: Alcatel Lucent
    Inventors: Chongjin Xie, Po Dong, Peter J Winzer