Specific Type Of Fiber Or Waveguide Patents (Class 398/142)
  • Patent number: 11212005
    Abstract: A bidirectional optical communication system employing one or more spans of hollow-core optical fiber. In at least some embodiments, the hollow-core optical fiber can be used to simultaneously transmit, in opposite directions, optical data signals having substantially the same carrier wavelength. In such embodiments, the spectral efficiency of the bidirectional optical communication system can advantageously be about two times higher than the spectral efficiency of a comparable conventional optical communication system employing only solid-core optical fibers. In some embodiments, the bidirectional optical communication system may have a solid-core optical fiber end-connected between two spans of hollow-core optical fiber. In some embodiments, the bidirectional optical communication system may use a hollow-core optical fiber for transmission of different WDM optical data signals in opposite directions.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: December 28, 2021
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventor: Robert Meachem Jopson
  • Patent number: 11137561
    Abstract: A power over fiber system transmits feed light and signal light through an optical fiber. The optical fiber includes a first transmission path and a second transmission path. The first transmission path is a core or a cladding, and the second transmission path is a cladding located on a periphery of the first transmission path. The feed light propagates through the first transmission path, and the signal light propagates through the second transmission path.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: October 5, 2021
    Assignee: KYOCERA CORPORATION
    Inventor: Shuichi Tamate
  • Patent number: 11101888
    Abstract: A system may involve transmitting data via a light-based data link. The aim of the invention is to establish a data connection which is as simple and efficient as possible. In order to achieve this, the system comprises various components which deflect the light containing the data and distribute it in a targeted manner. The invention also relates to various fields of application for the system, such as mechanical joints and robot joints, rail systems and luminaires.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: August 24, 2021
    Assignee: OSRAM GMBH
    Inventors: Gerhard Maierbacher, Bernhard Siessegger
  • Patent number: 10784969
    Abstract: A system and method for securing communication over an optical fiber are disclosed. The system includes a transmit spatial multiplexer configured to couple optical signals into spatial paths of an optical fiber, a first of the plurality of optical signals is an optically modulated version of a desired sequence of information that is intended to be transferred over the optical fiber and it is coupled into a first of the spatial paths; a second one of the plurality of optical signals is an optical chaff signal and it is coupled into a second spatial path different from the first one, and a third optical signal is an optical signal for use by an optical time domain reflectometer (OTDR) that is coupled into one of the spatial paths of the optical fiber, whereby a tap along the fiber cannot determine the transmitted desired sequence of information.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: September 22, 2020
    Assignee: APRIORI NETWORK SYSTEMS, LLC.
    Inventor: Gary M. Weiner
  • Patent number: 10763962
    Abstract: A system and method for securing communication over an optical fiber are disclosed. The system includes a transmit spatial multiplexer configured to couple a plurality of optical signals into respective ones of a plurality of spatial paths of an optical fiber, each of the spatial paths being able to carry an optical signal; wherein at least one of the plurality of optical signals is an optically modulated version of a desired sequence of information that is intended to be transferred over the optical fiber; and wherein at least one of the plurality of optical signals is an optical chaff signal; whereby a tap along the fiber cannot determine the transmitted desired sequence of information.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: September 1, 2020
    Assignee: APRIORI NETWORK SYSTEMS, LLC.
    Inventor: Gary M. Weiner
  • Patent number: 10353144
    Abstract: Embodiments of optical fiber may include cladding features that include a material (e.g., fluorine-doped silica glass) that may produce a very low relative refractive index difference with respect to cladding material in which the cladding features are disposed. This relative refractive index difference may be characterized by (n1?n2)/n1, where n1 is the index of refraction of the cladding material in which the cladding features are included, and n2 is the index of refraction of the cladding features. In certain embodiments, the relative refractive index difference may be less than about 4.5×10?3. In various embodiments, the configuration of the cladding features including, for example, the size and spacing of the cladding features, can be selected to provide for confinement of the fundamental mode yet leakage for the second mode and higher modes, which may provide mode filtering, single mode propagation, and/or low bend loss.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: July 16, 2019
    Assignee: IMRA America, Inc.
    Inventors: Liang Dong, Jun Li, Hugh McKay, Libin Fu, Andrius Marcinkevicius
  • Patent number: 10241283
    Abstract: The present invention relates to a signal transmission cable with HDMI connectors, and the signal transmission cable uses an optical fiber inside the cable to transmit optical signal. A first HDMI connector comprises a transmission terminal group for transmitting electric signal, and first and second electro-optic conversion modules and a first optical transmission fiber module which all are configured to transmit electric signal, convert electric signal into optical signal, and transmit optical signal to the cable. A second HDMI connector is connected to other end of the cable and comprises a second optical transmission fiber module, first and second photo-electric conversion modules which all are configured to receive the optical signal from the cable, and convert optical signal into electric signal, and a signal terminal group transmitting electric signal. Therefore, the signal transmission cable can provide function of converting and transmitting optical signal and electric signal in bi-direction.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: March 26, 2019
    Assignee: Sure-Fire Electrical Corporation
    Inventor: Chun-Lai Shen
  • Patent number: 10120132
    Abstract: A photonic integrated circuit having discrete optical components arranged on a top side of a substrate includes a first and second optical sources respectively configured to emit light beams, a first interferometer having a first and second input ports respectively coupled to the first and second optical sources via first waveguides, a second interferometer configured to receive signals from the first interferometer via second waveguides and combine the signals to transmit a combined signal via a third waveguide, and a submount configured to contact a back side of the substrate, wherein the submount includes a first thermal conductor having a first thermal conductivity and a second conductor having a second thermal conductivity, wherein the first thermal conductivity is greater than the second thermal conductivity, and the first and second optical sources are more proximity to the first thermal conductor than the second thermal conductor.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: November 6, 2018
    Assignees: Mitsubishi Electric Research Laboratories, Inc., Mitsubishi Electric Corporation
    Inventors: Keisuke Kojima, Satoshi Nishikawa, Toshiaki Koike-Akino, Bingnan Wang, Eiji Yagyu
  • Patent number: 10075321
    Abstract: A system combining OFDM standard modulation with a superimposition of Orbital Angular Momentum modes, each OAM modes consisting in an overlapping decimated IFFTs with the main mode standard OFDM signal. Orthogonality of the OAM modes is assessed. A frame structure embodying both main mode OFDM samples and overlapping OAM modes is proposed.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: September 11, 2018
    Assignee: EUTELSAT S A
    Inventors: Jacques Dutronc, Antonio Saitto
  • Patent number: 9957648
    Abstract: A woven information bearing device comprising a plurality of woven elements arranged to define a woven information bearing pattern, wherein the woven elements include N woven information bearing elements, N being an integer number; and wherein said N woven information bearing elements define N or more than N data elements.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: May 1, 2018
    Assignee: SINOWIDE TRADING LIMITED
    Inventors: Tak Wai Lau, Wing Hong Lam
  • Patent number: 9909952
    Abstract: Embodiments of the present invention generally relate to the field of fiber optics, and more specifically to apparatuses, methods, and/or systems associated with testing fiber optic transmitters. In an embodiment, the present invention is an apparatus comprising a laser optimized multimode fiber having near minimally compliant effective modal bandwidth, near maximum channel length, and ?-profile that produces an R-MMF DMD slope.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: March 6, 2018
    Assignee: Panduit Corp.
    Inventors: Jose M. Castro, Richard J. Pimpinella, Bulent Kose, Brett Lane
  • Patent number: 9391700
    Abstract: A multilayer film or skin for free space optical data transmission includes a first outer layer. The first outer layer has a first laterally extending area that transmits optical data signals received over a range of incident angle. A second layer that includes a second laterally extending area underlies the first layer. At least a portion of the optical data signals received by the second layer from the first outer layer is focused or otherwise concentrated into a substantially reduced area. An optical detector receives the concentrated optical data signals from the second layer. An electrical connection extends from the optical detector to an external receiving device. The multilayer film or skin may be used, for example, in applications involving mobile free space optical communication platforms where low profile, volume and mass and/or enhanced platforms are important.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: July 12, 2016
    Assignee: Sunlight Photonics Inc.
    Inventors: Allan James Bruce, Michael Cyrus, Sergey Frolov
  • Patent number: 9366937
    Abstract: Provided is an optical pulse-generator capable of efficiently using by a low driving voltage an entire band of an optical frequency comb input to a chirp compensator for the formation of an optical pulse. According to a graph shown in FIG. 4, dispersion compensation amounts (dispersion characteristics) necessary for a chirp (dispersion) compensator to efficiently compress an optical frequency comb which sinusoidally changes become an inverse of a parabolic coefficient. It is found that the dispersion compensation amount required at the center frequency is 2/? of that of a chirp being approximate to a linear chirp, and the required dispersion compensation amount increases as the frequency shift increases.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: June 14, 2016
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Masaaki Sudo, Tokutaka Hara
  • Patent number: 9145019
    Abstract: The invention relates to a monitoring device for monitoring marking elements of a marking head. The inventive device is characterized in that it comprises a detector for recording detected information on the marking elements, and a control and evaluation unit that is adapted to determine whether the marking elements carry out marking operations based on the detected information. The invention further relates to a method for monitoring marking elements of a marking head.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: September 29, 2015
    Assignee: Alltec Angewandte Laserlicht Technologie GMBH
    Inventors: Peter Joerg Kueckendahl, Daniel Joseph Ryan
  • Publication number: 20150110500
    Abstract: A Mach-Zehnder type optical modulator according to the present invention is characterized by: that it comprises a beam splitting unit for splitting input light into two component light beams, a first waveguide and a second waveguide for guiding respective ones of the split component light beams, a beam combining unit for combining together the component light beams guided respectively by the first and second waveguides and outputting the combined light, a plurality of electrodes which are formed into electrode pairs as a result of being arranged on the first and second waveguides in a symmetric and parallel manner, and driving units for differentially driving respective ones of the electrode pairs in accordance with the magnitude relationships between the voltage of an input signal and respective ones of threshold voltages set individually for the electrode pairs; and that, by thus being driven differentially, the plurality of electrodes each apply a voltage for modulating the input light to the waveguide on
    Type: Application
    Filed: April 3, 2013
    Publication date: April 23, 2015
    Inventor: Hidemi Noguchi
  • Publication number: 20150104188
    Abstract: An active optical beam shaping system includes a first deformable mirror arranged to at least partially intercept an entrance beam of light and to provide a first reflected beam of light, a second deformable mirror arranged to at least partially intercept the first reflected beam of light from the first deformable mirror and to provide a second reflected beam of light, and a signal processing and control system configured to communicate with the first and second deformable mirrors. The first deformable mirror, the second deformable mirror and the signal processing and control system together provide a large amplitude light modulation range to provide an actively shaped optical beam.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 16, 2015
    Applicant: The Johns Hopkins University
    Inventors: Colin A. Norman, Laurent A. Pueyo
  • Publication number: 20150063824
    Abstract: An optical fiber transmission line capable of minimizing the total splice loss per one span thereof. One span of an optical fiber transmission line provided between repeaters has two connection fibers and (N+1) number of optical transmission fibers. The optical connection fibers and are single mode optical fibers (SSMF) based on International standard ITU-T G.652 standard. (N+1) number of the optical transmission fibers are connected in series in order between the two optical connection fibers. The total splice loss ?sp—total of the optical fiber transmission line as calculated from the given formula is 1.4 dB or less, when the average value of the mode field diameter of the two connection fibers is W?, and the average value of the mode field diameter of (N+1) number of the optical transmission fibers is W, and the axial misalignment width at the splice point of the optical transmission fibers is d.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Inventors: Yuki KAWAGUCHI, Yoshinori YAMAMOTO, Masaaki HIRANO
  • Patent number: 8965217
    Abstract: A method of superimposing N optical transmission modes for collective transmission along a multimode optical fiber is provided where each of the N optical signals comprises N distinct superimposed transmission modes (M1, M2, . . . ) and a portion of each of the N propagating optical signals is sampled at a receiving end of the data transmission network. N2?1 distinct measurement conditions are derived from a transmission matrix T and a special unitary matrix group SU(N) corresponding to the superimposed transmission modes (M1, M2, . . . ) at the receiving end of the data transmission network and N2?1 measurements are extracted from the sampled signals. The extracted N2?1 measurements are used to solve a matrix equation corresponding to the generated SU(N) matrices and the output matrix transposed and used to generating principal state launch conditions from the eigenvectors of the transposed output matrix to form a principal state in each of the N optical signals.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 24, 2015
    Assignees: Corning Incorporated, The Research Foundation of CUNY of behalf of the City College of New York
    Inventors: Daniel A. Nolan, Giovanni Milione, Robert R. Alfano
  • Patent number: 8958703
    Abstract: In a representative embodiment, a multipath channel and an optical subcarrier modulation scheme are designed in concert to cause different modulated subcarriers of the optical communication signal to become substantially uncorrelated over the aggregate signal bandwidth. Provided that the employed FEC code has sufficient error-correcting capability for average channel conditions, breakdowns in the operation of the FEC decoder and the corresponding system outages can substantially be avoided.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: February 17, 2015
    Assignee: Alcatel Lucent
    Inventors: Peter J. Winzer, Gerard J. Foschini
  • Publication number: 20150030338
    Abstract: An optical communication fiber includes: a fiber body having a tip surface; and a light absorption layer provided to the tip surface of the fiber body, and configured to reduce light transmittance of communication light.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 29, 2015
    Inventors: Hirohito Miyazaki, Kazuyoshi Yamada, Tsuyoshi Ogawa, Fujio Kanayama
  • Publication number: 20140355999
    Abstract: An optical signal transmission device is used for transmitting optical light rays from a number of light emitters to a number of light receivers, and includes a substrate, a number of first optical waveguide elements, a number of second optical waveguide elements, a number of reflectors, and an integrated circuit. The substrate has a first side surface for positioning the light emitters, and a second side surface for positioning the light receivers. The light emitters and the light receivers are corresponding to the first optical waveguide elements. The second optical waveguide elements intersect with the first optical waveguide elements to form a number of hollow junctions for receiving the reflectors. Each reflector can rotate around a rotating shaft thereof in the corresponding hollow junction to change the optical transmission path of light rays from the light emitters. The integrated circuit controls rotating angles of the reflectors.
    Type: Application
    Filed: August 13, 2013
    Publication date: December 4, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Yi-Zhong SHEU
  • Patent number: 8891964
    Abstract: An optical network includes a multidimensional coder and modulator for handling multiple-in-multiple-out MIMO spatial lightpath properties and content of any specific supercarrier, a spatial mode multiplexer responsive to orthogonal frequency division multiplexing OFDM transmissions and the multidimensional coder, a spatial-spectral routing node coupled over a fiber link to the spatial mode multiplexer for performing switching granularity by a spatial mode reconnection, a multidimensional decoder and demodulator; and a spatial mode demultiplexer coupled over a fiber link to the spatial-spectral routing node and responsive to the multidimensional decoder and demodulator.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: November 18, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Milorad Cvijetic, Ivan B. Djordjevic, Neda Cvijetic, Ting Wang
  • Patent number: 8879920
    Abstract: The present wavelength multiplexed optical system includes a multimode optical fiber that transmits wavelength multiplexed optical signals and a plurality of multimode modal dispersion compensation optical fibers. Each modal dispersion compensation optical fiber can transmit one of the multiplex wavelengths, and each modal dispersion compensation optical fiber has an optimized index profile such that the modal dispersion for the transmitted wavelength is approximately inversely equal to the modal dispersion induced in the multimode optical fiber. The wavelength multiplexed optical system facilitates an increased bitrate without reducing bandwidth.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: November 4, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Yves Lumineau, Denis Molin, Asghar Gholami
  • Patent number: 8867878
    Abstract: A fiber optic cable has at least one fiber and at least one buffer tube surrounding the fiber, with the fiber being loosely held within the buffer tube. A jacket surrounds the tube where the at least one buffer tube is constructed from an extruded transparent polymer, allowing the arrangement of the fiber within the buffer tube to be visible along the entire length of the tube.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: October 21, 2014
    Assignee: Nexans
    Inventor: David Keller
  • Patent number: 8837952
    Abstract: A textile-structure optical communication interface device includes a diffusing unit configured to diffuse an optical signal including information transmitted between information devices. Further, the textile-structure optical communication interface device includes a condensing unit configured to condense the optical signal. Further, a textile-structure optical communication interface system includes a textile-structure optical communication interface device configured to enable optical fibers to be woven with yarns and to transmit and receive information between information devices. Furthermore, the textile-structure optical communication interface system includes a signal processing unit configured to signal-process the information transmitted and received between the information devices.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: September 16, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyoung Ju Noh, Yong Ki Son, Baesun Kim, Il Yeon Cho
  • Patent number: 8837953
    Abstract: A bi-directional optical transceiver includes multiple single mode optical ports and a multi-mode optical port. A multi-mode optical combiner combines single mode optical signals received at the single mode optical ports into a multi-mode optical signal at the multi-mode optical port. Each single mode optical signal having a distinct optical mode that does not interfere with the optical mode of the other single mode optical signals. A photo detector coupled to the multi-mode optical combiner detects a total optical power of the single mode optical signals in the multi-mode optical signal.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: September 16, 2014
    Assignee: ARRIS Enterprises, Inc.
    Inventors: Venk Mutalik, Marcel F. Schemmann
  • Publication number: 20140255044
    Abstract: A signal transfer link includes a first plasmonic coupler, and a second plasmonic coupler spaced apart from the first plasmonic coupler to form a gap. An insulator layer is formed over end portions of the first and second plasmonic couplers and in and over the gap. A plasmonic conductive layer is formed over the gap on the insulator layer to excite plasmons to provide signal transmission between the first and second plasmonic couplers.
    Type: Application
    Filed: August 16, 2013
    Publication date: September 11, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Phaedon Avouris, Vasili Parebeinos, Mathias B. Steiner, Alberto Valdes Garcia
  • Patent number: 8811784
    Abstract: An optical fiber that propagates light over a use wavelength bandwidth of 100 nm or wider in a plurality of propagation modes is provided. The optical fiber has: a confinement loss equal to or less than 1 dB/km in each of the plurality of propagation modes over the use wavelength bandwidth; and a bending loss equal to or less than 100 dB/m in each of the plurality of propagation modes over the use wavelength bandwidth when the optical fiber is bent at a diameter of 20 mm.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: August 19, 2014
    Assignee: Furukawa Electric Co., Ltd.
    Inventor: Kazunori Mukasa
  • Patent number: 8766221
    Abstract: A system and method are provided for bidirectional communications between a master device and one or more slave devices. Each slave device is coupled to first and second opto-isolators which are effective to provide galvanic isolation of the slave device from the master device. An encoder circuit is coupled between the master device and the first opto-isolators. A decoder circuit is coupled between the master device and the second opto-isolators. The master device generates transmissions to the slave devices along a first low logic path including the encoder and the first opto-isolators, wherein the decoder and the second opto-isolators are non-responsive to signals on the first path. The slave devices generate transmissions to the master device along a second low logic path including the second opto-isolators and the decoder, wherein the encoder and the first opto-isolators are non-responsive to signals on the second path.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: July 1, 2014
    Assignee: Power-One, Inc.
    Inventor: Alain Chapuis
  • Patent number: 8755659
    Abstract: An optical transmission system includes an optical transmitting unit that outputs at least one optical signal having a wavelength included in an operation wavelength band and a holey fiber that is connected to the optical transmitting unit. The holey fiber includes a core and a cladding formed around the core. The cladding includes a plurality of holes formed around the core in a triangular lattice shape. The holey fiber transmits the optical signal in a single mode. A bending loss of the holey fiber is equal to or less than 5 dB/m at a wavelength within the operation wavelength band when the holey fiber is wound at a diameter of 20 millimeters.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: June 17, 2014
    Assignee: Furukawa Electric Co., Ltd.
    Inventor: Katsunori Imamura
  • Patent number: 8725001
    Abstract: An optical data link includes first and second pluralities of transmission devices, at least one of which is configured as an array. A multichannel transmission link has a first end connected to the first plurality of transmission devices and a second end connected to the second plurality of transmission devices so as to form a plurality of parallel transmission channels therebetween. The multichannel transmission link includes a multicore fiber with a plurality of individual cores having a configuration matching the array configuration of the at least one plurality of transmission devices. The multicore fiber has an endface connected directly to the at least one plurality of transmission devices, with the individual cores of the multicore fiber aligned with respective devices in the at least one plurality of transmission devices. Further described are access networks and core networks incorporating a transmission link comprising at least one span of a multicore fiber.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: May 13, 2014
    Assignee: OFS Fitel, LLC
    Inventors: John M. Fini, Thierry F. Taunay, Man F. Yan, Benyuan Zhu
  • Publication number: 20140126912
    Abstract: Systems and methods for automatic interconnection discovery in an optical communication system, including: a fiber optic waveguide connecting a first port to a second port, wherein the fiber optic waveguide carries a primary optical signal; and transmitting a secondary acoustic signal over the fiber optic waveguide, wherein the secondary acoustic signal is encoded with information related to one or more of the first port and the second port and/or the interconnection there between. The secondary acoustic signal is transmitted one of continuously, synchronously intermittently, and asynchronously intermittently, and does not interfere with the primary optical signal.
    Type: Application
    Filed: November 7, 2012
    Publication date: May 8, 2014
    Applicant: CIENA CORPORATION
    Inventor: Vipul Bhatnagar
  • Patent number: 8718468
    Abstract: There is provided an optical fiber communication system restricting enlargement of the diameter of an optical fiber as well as enabling achievement of a large-capacity optical communication with a small number of optical fibers. An optical fiber communication system 100 includes an optical transmitter 10 transmitting a plurality of optical signals in parallel, a multicore fiber 20 in which outer circumferences of a plurality of cores are covered with a common clad, and the respective optical signals transmitted in parallel from the optical transmitter 10 are input into the cores, and an optical receiver 30 receiving the optical signals output in parallel from the respective cores of the multicore fiber, wherein the optical transmitter 10 and the optical receiver 30 perform a MIMO communication.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: May 6, 2014
    Assignee: Fujikura Ltd.
    Inventors: Katsuhiro Takenaga, Ning Guan
  • Patent number: 8705976
    Abstract: The present invention relates generally to optical rotary joints (35) for enabling optical communication between a rotor and a stator, and to improved optical reflector assemblies for use in such optical rotary joints.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: April 22, 2014
    Assignee: Moog Inc.
    Inventors: K. Peter Lo, Norris E. Lewis, Heath E. Kouns, Martin J. Oosterhuis
  • Publication number: 20140105613
    Abstract: The invention provides optical interconnects of data-processing cores of multicore chips by means of digital planar holographic microchips. The method comprises delivering “N” laser lights to “N” data-processing cores on the host chip, coding the obtained optical signals by modulating them with the core-generated data, and then delivering the modulated and coded optical signals to a holographic microchip formed on the same substrate of the host chip as the data-processing cores, splitting the modulated and coded optical signals into (N-1)N modulated optical copy signals, delivering the copy signals to all data-processing cores except the one that generates the copy signals, and decoding the data obtained from the output signals delivered to the processing cores by the receivers. The method is efficient in that it allows replacing electrical interconnects between the cores with optical interconnects and can be matched to current semiconductor production technology.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 17, 2014
    Inventors: Vladimir Yankov, Konstantin KRAVTSOV, Leonid VELIKOV
  • Patent number: 8693834
    Abstract: A few mode optical fiber suitable for use in a mode division multiplexing (MDM) optical transmission system is disclosed. The optical fiber has a graded-index core with a radius R1 in the range from 8 ?m to 14 ?m, an alpha value greater than or equal to about 2.3 and less than about 2.7 at a wavelength of 1550 nm, and a maximum relative refractive index ?1MAX from about 0.3% to about 0.6% relative to the cladding. The optical fiber also has an effective area greater than about 90 ?m2 and less than about 160 ?m2. The core and cladding support only the LP01 and LP11 modes at wavelengths greater than 1500 nm. The cladding has a maximum relative refractive index ?4MAX such that ?1MAX>?4MAX, and the differential group delay between the LP01 and LP11 modes is less than about 0.5 ns/km at a wavelength of 1550 nm.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: April 8, 2014
    Assignee: Corning Incorporated
    Inventors: Scott Robertson Bickham, Ming-Jun Li, Daniel Aloysius Nolan, Ji Wang
  • Patent number: 8687971
    Abstract: A system, a Laser-on-CMOS chip, and a method are described herein in accordance with the present invention. In one embodiment, the present invention enables a conventional WDM-capable system to dictate what wavelengths a Laser-on-CMOS chip's optical ports will use by seeding each of their LoC upstream reflective light generation devices (e.g., RSOAs) with a particular wavelength.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: April 1, 2014
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventor: Stefan Dahlfort
  • Patent number: 8639068
    Abstract: An optical transmission module has an optical transmission path in which optical transmission is performed between a first circuit board and a second circuit board disposed opposite the first circuit board. The optical transmission path has a folded structure having a bending radius. A circumferential portion drawn by the bending radius is provided substantially perpendicular to board surfaces of the first circuit board and the second circuit board.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: January 28, 2014
    Assignee: OMRON Corporation
    Inventors: Hayami Hosokawa, Naru Yasuda, Kentaro Hamana
  • Patent number: 8634722
    Abstract: The present embodiments relate to non-contact transmission of optical signals by an optical waveguide which is provided with a material of which the electron arrangement is able to be put into population inversion. In a first variant, energy is fed to the optical waveguide so that the electron arrangement is held in a state above its thermal equilibrium and below the population inversion, with optical signals being beamed into the optical waveguide with a wavelength exciting the electrons of the inversion material such that a local population inversion is created in a section of the optical waveguide, and subsequently light which is created by spontaneous emission is detected. In a second variant, a local population inversion is created by pump light, with simultaneously optical signals being beamed into the population-inverted section with the emission wavelength and by light created by stimulated emission being detected.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: January 21, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Joachim Walewski
  • Publication number: 20130322891
    Abstract: A method and apparatus for transmitting signals. An apparatus comprises a tube comprising a number of layers of carbon forming a wall of the tube. The number of layers of carbon has a number of optical properties configured to propagate an optical signal and a number of electrical properties configured to conduct an electrical signal.
    Type: Application
    Filed: May 29, 2012
    Publication date: December 5, 2013
    Applicant: THE BOEING COMPANY
    Inventors: Wayne R. Howe, Jeffrey H. Hunt, Angela Wai-an Li
  • Patent number: 8588620
    Abstract: Conversions between digital, parallel-electronic and digital, serial-optic words are presented, specifically for interconnection networks with optical communication links.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: November 19, 2013
    Assignee: Yissum Research Development Company of the Hebrew University of Jerusalem
    Inventor: Aharon Agranat
  • Publication number: 20130287400
    Abstract: A system and method for carrying a downstream optical signal and an upstream optical signal on a fiber optic link is disclosed. The system and method includes a first transceiver unit that receives an input communication signal from at least one external communication device at an electrical input port, a transmitter that converts the input communication signal into an optical signal and transmits the optical signal as an downstream optical signal on a fiber optic link, a receiver at the second transceiver unit that receives the downstream optical signal and converts the downstream optical signal into an electrical communication signal, and a first circuit in the second transceiver unit that determines whether the second transceiver couples the electrical communication signal to a two wire intercom circuit or a four wire intercom circuit.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 31, 2013
    Applicant: MIRANDA TECHNOLOGIES PARTNERSHIP
    Inventors: James Bennett Hurwitz, David Charles Pelletier
  • Publication number: 20130266319
    Abstract: A photonic antenna uses a traveling wave fed, surface wave excited, dielectric waveguide. One or more antenna elements are arranged in a line or other array. An optical interconnect is provide by depositing the waveguide structure on the system of antenna elements, and the photodiode detectors on the waveguide, or wafer bonded to the waveguide core. Optical sources are butt coupled to the edge of the waveguide via wafer bonding or as part of a deposition process. The device acts as a free-space optical transceiver embodied in an integrated photonic antenna and waveguide structure, and provides high speed, spectrally broadband response; it also inherently includes an open architecture for implementing Wavelength Division Multiplexing (WDM).
    Type: Application
    Filed: June 28, 2012
    Publication date: October 10, 2013
    Applicant: AMI Research & Development, LLC
    Inventors: Patricia Bodan, John T. Apostolos, William Mouyos, Benjamin McMahon
  • Patent number: 8542997
    Abstract: The invention relates to a passive optical network comprising an optical exchange linked by at least one optical fiber to at least one line termination device of said network, able to transmit a downlink optical signal phase-modulated in NRZ-DPSK format and to receive an uplink optical signal. According to the invention, said line termination device comprises means of converting the transmitted downlink optical signal phase-modulated in NRZ-DPSK format into an optical data signal amplitude-modulated in duobinary modulation format and means of generating an uplink optical signal phase-modulated in NRZ-DPSK format from the downlink optical signal phase-modulated in NRZ-DPSK format. The optical exchange is able to convert the uplink optical signal phase-modulated in NRZ-DPSK format into an optical data signal amplitude-modulated in duobinary modulation format.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: September 24, 2013
    Assignee: France Telecom
    Inventors: Erwan Pincemin, Naveena Genay
  • Publication number: 20130230318
    Abstract: There are provided a communications interface apparatus and a method of operating the same. The communications interface apparatus includes: a transmission line including a conductor line and a plastic optical fiber for optical communications; a signal transmitting unit transmitting a first data signal through the plastic optical fiber and transmitting a second data signal through the conductor line; and a signal receiving unit receiving the first data signal and the second data signal, wherein the signal transmitting unit differentiates a signal as the first data signal or the second data signal based on at least one of a level and a frequency of the signal to be transmitted.
    Type: Application
    Filed: June 26, 2012
    Publication date: September 5, 2013
    Inventors: Eung Ju Kim, Won Jin Baek, Kyung Uk Kim
  • Publication number: 20130183045
    Abstract: A switch is inserted and connected between a first portion and a second portion of an HPD line. The switch connects the first portion to the second portion when an HPD signal is outputted to the second portion. The switch cuts off the connection between the first portion and the second portion when the HPD signal is not outputted to the second portion. An AND gate generates a connection state detection signal that represents the connection state of an HDMI optical active cable, and outputs the connection state detection signal to a switch.
    Type: Application
    Filed: March 11, 2013
    Publication date: July 18, 2013
    Applicant: PANASONIC CORPORATION
    Inventor: PANASONIC CORPORATION
  • Patent number: 8485737
    Abstract: A transition device for an optical fiber connection system adapted to interconnect a trunk cable with a plurality of transceivers includes: a first set of at least four optical fibers, each of the optical fibers having a trunk end and a transceiver end; a single trunk end terminal having a plurality of trunk ports arranged in a first row, each port connected with a respective one of the set of optical fibers at its trunk end, wherein a first axis of symmetry divides the ports; and a plurality of transceiver end terminals, each of the transceiver end terminals having at least one couplet of transceiver ports, each of the couplets of transceiver ports receiving a respective couplet of the set of optical fibers at their transceiver ends.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: July 16, 2013
    Assignee: CommScope, Inc. of North Carolina
    Inventor: Paul Kolesar
  • Publication number: 20130148976
    Abstract: First and second active optical modules that terminate first and second active optical cable segments, each of which having a respective active end and a respective passive end, can be authenticated by: reading information from active-end storage devices attached to the respective active ends of the first and second active optical modules; providing information read from the active-end storage devices to an aggregation point; reading information from passive-end storage devices attached to the respective passive ends of the first and second active optical cable segments; providing information read from passive-end storage devices to the aggregation point; and authenticating the first and second active optical modules using information provided to the aggregation point.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 13, 2013
    Applicant: ADC TELECOMMUNICATIONS, INC.
    Inventor: ADC Telecommunications, Inc.
  • Patent number: 8433200
    Abstract: A quantum key delivery system includes an optical circulator, an optical low-pass filter, optical splitters, and first and second optical couplers arranged for outputting various wavelength components including correlated-photon pair wavelength components outputted from an optical loop path. The first and second optical couplers output light beams, which are sent over first and second quantum channels to first and second recipients, respectively. Other optical splitters are adapted to output light rays, from which first and second control signals are produced. From auxiliary idler light components transmitted over the first and second quantum channels, clock signals are extracted. The system thus extracts a clock signal for detecting arrival of photons, and stably operates with an expected value of the number of generated correlated photon pairs maintained at a substantially constant value.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: April 30, 2013
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Shin Arahira
  • Patent number: 8428467
    Abstract: An optical fiber communication method for communication between a transmitting terminal and a receiving terminal includes the steps of: providing an optical fiber to be coupled to the transmitting terminal and including a core that is provided with at least one second-order Bragg grating structure and a cladding that surrounds the core; configuring the transmitting terminal to output a data-carrying optical signal to one end of the core of the optical fiber for subsequent wireless transmission of the data-carrying optical signal via radiation through the second-order Bragg grating structure of the optical fiber; and configuring the receiving terminal to receive the signal radiated by the second-order Bragg grating structure of the optical fiber. A transmitting device is also disclosed.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: April 23, 2013
    Assignee: I Shou University
    Inventors: Nai-Hsiang Sun, Shih-Chiang Lin, Wen-Fung Liu, Jiun-Jie Liau