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31. 发明授权

US07650084B2 Optical heterodyne receiver and method of extracting data from a phase-modulated input optical signal 有权
标题翻译：光外差接收机和从相位调制输入光信号中提取数据的方法
公开(公告)号：US07650084B2
公开(公告)日：2010-01-19
申请号：US11236246
申请日：2005-09-27
申请人： Young-Kai Chen , Ut-Va Koc , Andreas Leven
发明人： Young-Kai Chen , Ut-Va Koc , Andreas Leven
IPC分类号： H04B10/06
CPC分类号： H04B10/64 , H04B10/61 , H04B10/613 , H04B10/615
摘要： An optical heterodyne receiver and a method of extracting data from a phase-modulated input optical signal. In one embodiment, the optical heterodyne receiver includes: (1) a photonic quadrature demodulator having first and second optical inputs and first and second electrical outputs and configured to generate at the first and second electrical outputs an in-phase signal and a quadrature-phase signal, respectively, in response to receiving a modulated optical signal at the first optical input and a reference optical oscillator signal at the second optical input, (2) a passive radio frequency single sideband demodulator coupled to the photonic quadrature demodulator and configured to extract at least one sideband of the in-phase signal or the quadrature-phase signal and (3) at least one analog-to-digital converter coupled to the passive radio frequency single sideband demodulator and configured to receive and sample the at least one sideband.
摘要翻译：光学外差接收器和从相位调制输入光信号中提取数据的方法。在一个实施例中，光学外差接收器包括：（1）光子正交解调器，其具有第一和第二光学输入以及第一和第二电输出并被配置为在第一和第二电输出处产生同相信号和正交相位信号，分别响应于在第一光输入处接收调制的光信号和在第二光输入处的参考光信号，（2）耦合到光子正交解调器的被动射频单边带解调器，并且被配置为在同相信号或正交相位信号的至少一个边带;以及（3）耦合到无源射频单边带解调器并被配置为接收和采样至少一个边带的至少一个模拟 - 数字转换器。

32. 发明公开

US20240348343A1 Polarization-Diverse Radio Receive Element, Receiver, Transceiver and Related Methods of Operation 审中-公开
公开(公告)号：US20240348343A1
公开(公告)日：2024-10-17
申请号：US18633351
申请日：2024-04-11
申请人： Phase Sensitive Innovations, Inc.
发明人： Benjamin Mazur , Timothy Creazzo , Janusz Murakowski , Garrett Schneider , Shouyuan Shi
IPC分类号： H04B10/61 , H04B7/10 , H04B10/112
CPC分类号： H04B10/615 , H04B7/10 , H04B10/112
摘要： An apparatus and methods for receiving polarization diverse radio signals. The apparatus includes a coherent light source configured to output an optical carrier signal, a dual polarization antenna, and a nested Mach-Zehnder Modulator. The nested Mach-Zehnder Modulator is configured to receive the optical carrier signal, a first RF electrical signal from a first output of a dual polarization antenna corresponding to a first linear polarization mode and a second RF electrical signal from a second output of the dual polarization antenna corresponding to a second linear polarization mode, modulate the optical carrier signal based on the first RF electrical signal and the second RF electrical signal to generate an upper optical sideband signal, a lower optical sideband signal, and output the upper and lower optical sideband signal separately.

33. 发明授权

US12034482B2 Accurate measurement for guided acoustic-wave Brillouin scattering 有权
公开(公告)号：US12034482B2
公开(公告)日：2024-07-09
申请号：US17336280
申请日：2021-06-01
申请人： NEC Laboratories America, Inc.
发明人： Fatih Yaman , Eduardo Mateo Rodriguez , Shinsuke Fujisawa , Hussam Batshon , Kohei Nakamura , Takanori Inoue , Yoshihisa Inada , Takaaki Ogata
IPC分类号： H04B10/2537 , G01H9/00 , H01S3/067 , H01S3/10 , H01S3/16 , H01S3/30 , H04B10/073 , H04B10/61
CPC分类号： H04B10/2537 , G01H9/004 , H01S3/06716 , H01S3/10061 , H01S3/1608 , H01S3/302 , H04B10/073 , H04B10/615
摘要： Aspects of the present disclosure are directed to systems, methods, and structures providing for the accurate measurement of guided acoustic-wave Brillouin scattering in optical fiber transmission systems and facilities.

34. 发明公开

US20240146417A1 Optical Module 审中-公开
公开(公告)号：US20240146417A1
公开(公告)日：2024-05-02
申请号：US18399670
申请日：2023-12-28
申请人： HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES CO., LTD.
发明人： Honghao ZHANG , Fei LIU , Wei CUI
IPC分类号： H04B10/40 , H04B10/50 , H04B10/61
CPC分类号： H04B10/40 , H04B10/503 , H04B10/506 , H04B10/615
摘要： Provided is an optical module including a circuit board and an optical transceiver device. The circuit board is provided with a mounting hole and a data processor. The optical transceiver device is mounted on the circuit board and is electrically connected to the data processor. The optical transceiver device includes a mounting shell, a first cover member, a light emission component and a light reception component. The first cover member is disposed on the front surface of the circuit board. A laser assembly and a translation prism assembly of the light emission component are located on the mounting shell and are exposed to the front surface of the circuit board through the mounting hole, and a light exiting direction of a light processing assembly of the light emission component forms a first preset angle with a light entering direction thereof in a plane parallel to the circuit board.

35. 发明公开

US20240031710A1 CABLE IDENTIFICATION AND PHYSICAL ROUTE TRACING USING STATE OF POLARIZATION OR PHASE COHERENT MEASUREMENTS 审中-公开
公开(公告)号：US20240031710A1
公开(公告)日：2024-01-25
申请号：US17871093
申请日：2022-07-22
申请人： Cisco Technology, Inc.
发明人： Luca Della Chiesa , Christian Schmutzer
IPC分类号： H04Q11/00 , H04B10/61 , H04B10/073 , G01H9/00
CPC分类号： H04Q11/0062 , H04B10/615 , H04B10/073 , G01H9/004 , H04Q2011/0083 , H04Q2011/0073
摘要： Presented herein are techniques to manage optical network infrastructure. A method includes inducing a predetermined vibration on a fiber optic cable, the predetermined vibration being sufficient to cause a change to at least one of a state of polarization and a phase of optical signals being carried by respective optical fibers in the fiber optic cable, detecting, at a first endpoint, using a first coherent optical receiver, and at a second endpoint, using a second coherent optical receiver, the change to the at least one of the state of polarization and the phase of the optical signals, and based on the detecting, determining that the first endpoint and the second endpoint are connected to, or in communication with, one another via at least one finer in the fiber optic cable.

36. 发明公开

US20240007186A1 TURBULENCE-RESILIENT SELF-COHERENT FREE-SPACE OPTICAL COMMUNICATIONS USING AUTOMATIC PILOT-ASSISTED OPTOELECTRONIC BEAM MIXING OF MANY MODES 审中-公开
公开(公告)号：US20240007186A1
公开(公告)日：2024-01-04
申请号：US18267731
申请日：2022-01-20
申请人： UNIVERSITY OF SOUTHERN CALIFORNIA
发明人： Runzhou Zhang , Nanzhe Hu , Alan E. Willner , Huibin Zhou , Haoqian Song , Hao Song , Xinzhou Su , Kaiheng Zou
IPC分类号： H04B10/112 , H04B10/61 , H04B10/516
CPC分类号： H04B10/1121 , H04B10/615 , H04B10/5161
摘要： Atmospheric turbulence degrades decoding and data recovery from optically transmitted signals. For example, atmospheric turbulence can induce power coupling from the transmitted Gaussian mode to higher-order modes, resulting in significantly degraded mixing efficiency and system performance. Systems and methods are provided to generate a signal that is a conjugate of the atmospheric noise which is combined with a received data signal to ameliorate atmospheric noise. An optical pilot beam may be transmitted with an optical data beam and received by a receiver which utilizes the optical pilot beam to generate the signal that is a conjugate of the atmospheric noise.

37. 发明授权

US11799560B2 Asymmetric direct detection of optical signals 有权
公开(公告)号：US11799560B2
公开(公告)日：2023-10-24
申请号：US17578853
申请日：2022-01-19
申请人： Ciena Corporation
发明人： Xueyang Li , Maurice O'Sullivan , Zhenping Xing , David V. Plant , Mohammad E. Mousa Pasandi
IPC分类号： H04B10/06 , H04B10/61 , H04B10/516
CPC分类号： H04B10/616 , H04B10/5165 , H04B10/615
摘要： An asymmetric coherent receiver includes an optical front end configured to split a received optical signal into two paths, wherein the split received optical signal experiences a different optical transfer function in one of the two paths; two photodetectors each configured to detect power one of the split received optical signals in each of the two paths to obtain corresponding electrical signals; and circuitry configured to perform electrical domain extraction of information of each of the corresponding electrical signals from the two paths, wherein the different optical transfer function provides additional information utilized in optical field reconstruction via direct detection.

38. 发明授权

US11791904B2 Receiver and system for transporting and demodulating complex optical signals 有权
公开(公告)号：US11791904B2
公开(公告)日：2023-10-17
申请号：US17371635
申请日：2021-07-09
申请人： RAYTHEON COMPANY
发明人： Andrew Kowalevicz , Benjamin P. Dolgin , Gary M. Graceffo , James Talamonti
IPC分类号： H04B10/61 , H04B10/67 , H04L7/00
CPC分类号： H04B10/6165 , H04B10/615 , H04B10/65 , H04B10/67 , H04B10/676 , H04L7/0075 , H04B2210/252
摘要： An optical signal receiver includes a multimode waveguide for receiving a complex modulated optical signal, an optical resonator that receives the complex modulated optical signal from the multimode waveguide and converts the complex modulated optical signal to an intensity modulated signal, and a detector that is configured to convert the intensity modulated signal into an electrical signal, the electrical signal having an amplitude indicative of an intensity of the intensity modulated signal from the optical resonator, and that provides a detected signal.

39. 发明公开

US20230318712A1 Tunable optical filter in coherent optical transmitters 审中-公开
公开(公告)号：US20230318712A1
公开(公告)日：2023-10-05
申请号：US17712263
申请日：2022-04-04
申请人： Ciena Corporation
发明人： Michael Hubbard , Will Leckie , Victor Aldea , Priyanth Mehta
IPC分类号： H04B10/50 , H04B10/61
CPC分类号： H04B10/5051 , H04B10/615 , H04B10/616
摘要： A coherent optical transmitter includes circuitry connected to a coherent modulator; and a plurality of tunable optical filters (TOFs) connected to one another and connected to an output of the coherent modulator, wherein the plurality of tunable optical filters are configurable to create an effective transfer function having a variable width. The TOFs are cascaded and can be included in discrete form on electro-optic printed circuit boards (PCBs), or integrated in various electro-optic material systems such as in silicon photonics, photonic integrated circuits (PICs), as well as hybrid and other approaches. The advantage of this approach includes improved OSNR in colorless transmitters.

40. 发明公开

US20230216594A1 COHERENT OPTICAL RECEIVER DEVICE AND COHERENT OPTICAL RECEIVING METHOD 审中-公开
公开(公告)号：US20230216594A1
公开(公告)日：2023-07-06
申请号：US18121235
申请日：2023-03-14
申请人： NEC Corporation
发明人： Kouichi SUZUKI
IPC分类号： H04B10/61 , H04B10/079 , H04J14/06 , H04J14/02
CPC分类号： H04B10/6151 , H04B10/613 , H04B10/614 , H04B10/61 , H04B10/612 , H04B10/615 , H04B10/0795 , H04J14/06 , H04J14/02
摘要： In a coherent optical receiver device, the dynamic range considerably decreases in the case of selectively receiving the optical multiplexed signals by means of the wavelength of the local oscillator light, therefore, a coherent optical receiver device according to an exemplary aspect of the invention includes a coherent optical receiver receiving optical multiplexed signals in a lump in which signal light is multiplexed; a variable optical attenuator; a local oscillator connected to the coherent optical receiver; and a first controller controlling the variable optical attenuator by means of a first control signal based on an output signal of the coherent optical receiver; wherein the coherent optical receiver includes a 90-degree hybrid circuit, a photoelectric converter, and an impedance conversion amplifier, and selectively detects the signal light interfering with local oscillation light output by the local oscillator out of the optical multiplexed signals; and the variable optical attenuator is disposed in the optical path of the optical multiplexed signals in a stage preceding the photoelectric converter, inputs the optical multiplexed signals, and outputs them to the coherent optical receiver controlling the intensity of the optical multiplexed signals based on the first control signal.

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