公开(公告)号：US20180167145A1

公开(公告)日：2018-06-14

申请号：US15816670

申请日：2017-11-17

申请人： RAYTHEON COMPANY

发明人： Benjamin P. Dolgin ,  Andrew Kowalevicz ,  Gary M. Graceffo

IPC分类号： H04B10/67 ,  G02B5/28 ,  G02F7/00

CPC分类号： H04B10/671 ,  G02B5/284 ,  G02B5/285 ,  G02F7/00 ,  H04B10/67

摘要： Aspects are generally directed to optical signal receivers and methods. In one example, a receiver includes an optical resonator assembly configured to receive an optical signal at each of a plurality of optical resonators, each optical resonator configured to resonate optical signal energy at a corresponding frequency of the received optical signal, each optical resonator being tuned to a different corresponding frequency of the received optical signal, and each optical resonator being configured to output corresponding output optical signal energy. The receiver includes a detector assembly to detect the corresponding output optical signal energy from each optical resonator, and a signal processing circuit configured detect a frequency variation of the received optical signal based on the corresponding output optical signal energy from at least two of the plurality of optical resonators, and configured to generate a digital signal based on the frequency variation.

公开(公告)号：US09973276B2

公开(公告)日：2018-05-15

申请号：US15413906

申请日：2017-01-24

申请人： FUJITSU LIMITED

发明人： Yutaka Kai ,  Tomoo Takahara ,  Toshiki Tanaka ,  Masato Nishihara ,  Ryou Okabe

IPC分类号： H04B10/2507 ,  H04B10/079 ,  H04B10/40 ,  H04B10/66 ,  H04L7/00 ,  H04J3/06

CPC分类号： H04B10/2507 ,  H04B10/079 ,  H04B10/25133 ,  H04B10/40 ,  H04B10/66 ,  H04B10/67 ,  H04J3/0644 ,  H04J3/0647 ,  H04L7/0075

摘要： An apparatus includes a receiver configured to receive a signal that has traveled an optical transmission line without returning output from an optical transmitting device and synchronize with the optical transmitting device in order to demodulate the signal; a dispersion compensator configured to compensate for wavelength dispersion caused by transmission of the signal; an acquisition circuit configured to acquire a transmitting timing at which the signal has been transmitted from the optical transmitting device; a calculation circuit configured to calculate a transmission time period from the optical transmitting device to the receiver from the transmitting timing and a receiving timing at which the signal has been received with the receiver; and an amount setting circuit configured to adjust a dispersion compensation amount of the dispersion compensator in accordance with the transmission time period.

公开(公告)号：US09967027B2

公开(公告)日：2018-05-08

申请号：US15210224

申请日：2016-07-14

申请人： Cisco Technology, Inc.

发明人： Christopher R. Fludger ,  Soeren Gehrke ,  Johann B. Schiessl

IPC分类号： H04B10/08 ,  H04B10/00 ,  H04B10/06 ,  H04B10/079 ,  H04B10/67 ,  H04B10/50

CPC分类号： H04B10/0795 ,  H04B10/0799 ,  H04B10/40 ,  H04B10/50 ,  H04B10/67

摘要： One or more operational parameters associated with pluggable optical transceivers are estimated to mitigate impairments to an optical signal caused by imperfections in the optical transceivers. A monitoring algorithm within a receiver signal processor may further use the estimated operational parameters associated with the pluggable optical transceivers to determine whether the transceivers are performing correctly. If the monitoring algorithm determines that either the transmitting or receiving optical transceiver is not functioning correctly, it may generate an alarm signal to notify a system administrator about the damaged device.

公开(公告)号：US20180062761A1

公开(公告)日：2018-03-01

申请号：US15687413

申请日：2017-08-25

申请人： Ayar Labs, Inc.

发明人： Mark Wade ,  Chen Sun ,  Nandish Mehta

IPC分类号： H04B10/67 ,  G02B6/293 ,  G02B6/12 ,  H01L27/144 ,  H01L31/02 ,  H01L31/0203 ,  H01L31/0232 ,  H01L31/024 ,  H01L31/028 ,  H01L31/0312 ,  H01L31/0368 ,  H01L31/103 ,  H01L31/18

CPC分类号： H04B10/67 ,  G02B6/12004 ,  G02B6/29338 ,  G02B6/4289 ,  G02B2006/12061 ,  G02B2006/12078 ,  G02B2006/12123 ,  H01L27/1443 ,  H01L31/02005 ,  H01L31/02019 ,  H01L31/0203 ,  H01L31/02325 ,  H01L31/024 ,  H01L31/028 ,  H01L31/0312 ,  H01L31/03682 ,  H01L31/103 ,  H01L31/1804

摘要： An optical cavity is formed to have a circuitous configuration. The optical cavity is configured to receive light coupled from a waveguide. At least two photodetector sections are formed over respective portions of the optical cavity. Each of the at least two photodetector sections is configured to detect light present within the optical cavity. Each of the at least two photodetector sections is configured for separate and independent control.

公开(公告)号：US20180054259A1

公开(公告)日：2018-02-22

申请号：US15679470

申请日：2017-08-17

申请人： RAYTHEON COMPANY

发明人： Andrew Kowalevicz ,  Benjamin P. Dolgin ,  Gary M. Graceffo

IPC分类号： H04B10/67 ,  H04B10/69 ,  H04B10/25 ,  H04B10/61

CPC分类号： H04B10/676 ,  H04B10/25 ,  H04B10/5561 ,  H04B10/61 ,  H04B10/67 ,  H04B10/69

摘要： Optical signal receivers and methods are provided that include an optical resonator that allows optical signal energy to enter and accumulate inside the optical resonator. A portion of optical signal energy is emitted from the optical resonator at an output, such that the emitted optical signal energy is disturbed when a transition occurs in the received optical signal energy. A detector aligned with the output detects the emitted optical signal energy and is configured to detect the disturbance to the emitted optical signal energy and determine a characteristic of the transition in the received optical signal energy based upon the disturbance.

公开(公告)号：US09742493B2

公开(公告)日：2017-08-22

申请号：US14870055

申请日：2015-09-30

申请人： Christian Breuer ,  Anant Aggarwal ,  Barry Stout

发明人： Christian Breuer ,  Anant Aggarwal ,  Barry Stout

IPC分类号： H04B10/00 ,  H04B10/116 ,  H04N5/353 ,  H04B10/54 ,  H04B10/67

CPC分类号： H04B10/116 ,  H04B10/54 ,  H04B10/67 ,  H04N5/3532

摘要： 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.

公开(公告)号：US09615152B2

公开(公告)日：2017-04-04

申请号：US14730680

申请日：2015-06-04

申请人： FUJITSU LIMITED ,  Photonics Electronics Technology Research Association

发明人： Seokhwan Jeong

IPC分类号： H04B10/08 ,  H04B17/00 ,  H04Q11/00 ,  H04J14/02 ,  H04B10/60 ,  H04B10/079 ,  H04B10/67

CPC分类号： H04Q11/0005 ,  H04B10/0795 ,  H04B10/60 ,  H04B10/67 ,  H04B10/676 ,  H04J14/02 ,  H04J14/06 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0035

摘要： An optical element includes: a polarization splitter that splits light input from an input port into a first signal and a second signal according to a plane of polarization; a polarization rotator that rotates a plane of polarization of the second signal output from the polarization splitter by 90 degrees; a first optical coupler that combines the first signal output from the polarization splitter and the second signal output from the polarization rotator and splits the resultant signal into a third signal and a fourth signal with an equal amplitude; a phase controller that controls a phase of the third signal; and a second optical coupler that combines the third signal output from the phase controller and the fourth signal output from the first optical coupler and splits the resultant signal into a fifth signal and a sixth signal with an equal amplitude.

公开(公告)号：US09413469B2

公开(公告)日：2016-08-09

申请号：US14567890

申请日：2014-12-11

申请人： Dayton D. Eden

发明人： Dayton D. Eden

IPC分类号： H04B10/67 ,  H04N5/33 ,  H04N5/225 ,  G01J5/08 ,  G01J5/20 ,  G01J5/22 ,  G01V8/00 ,  G01V3/10 ,  G01J5/00

CPC分类号： H04B10/67 ,  G01J5/0803 ,  G01J5/0837 ,  G01J5/0846 ,  G01J5/20 ,  G01J5/22 ,  G01J2005/0077 ,  G01V3/10 ,  G01V8/005 ,  H04N5/2258 ,  H04N5/33 ,  H04N5/332

摘要： An apparatus includes a link receiver having a detector array configured to receive radiation from a remote communication device, where the detector array includes multiple detectors. Each detector includes a horn receiver configured to capture the radiation using an antenna positioned in or proximate to a throat of the horn receiver, where the antenna is coupled to an antenna load. Each detector also includes a bolometer electrically isolated from the antenna load and in thermal contact with the antenna load. The link receiver could include a terahertz camera. The detector array can be located at a focal plane of an optical system configured to receive the radiation through a specified far-field solid angle. The apparatus could also include a link transmitter configured to generate and transmit second radiation to the remote communication device and/or a communication transmitter/receiver configured to communicate with the remote communication device.

摘要翻译： 一种装置包括具有检测器阵列的链路接收机，其被配置为从远程通信设备接收辐射，其中检测器阵列包括多个检测器。 每个检测器包括喇叭接收器，其被配置为使用定位在喇叭接收器的喉部中或靠近喇叭接收器的喉部的天线捕获辐射，其中天线耦合到天线负载。 每个检测器还包括与天线负载电隔离并与天线负载热接触的测辐射热计。 链路接收机可以包括太赫兹相机。 检测器阵列可以位于被配置为通过指定的远场立体角接收辐射的光学系统的焦平面。 该装置还可以包括被配置为向远程通信设备生成和发送第二辐射的链路发射机和/或被配置为与远程通信设备进行通信的通信发射机/接收机。

公开(公告)号：US20160119078A1

公开(公告)日：2016-04-28

申请号：US14863550

申请日：2015-09-24

申请人： Alcatel-Lucent USA Inc.

发明人： Joseph K. Kakande

IPC分类号： H04J14/06 ,  G02B6/27 ,  H04B10/61 ,  G02B6/293

CPC分类号： H04J14/06 ,  H04B10/5053 ,  H04B10/506 ,  H04B10/516 ,  H04B10/67 ,  H04B10/69 ,  H04J14/02

摘要： We disclose an optical transport system configured to transport the same data using two different channels of an optical transport link in a manner that enables an optical receiver to use direct detection of the optical power received through each of the two channels to measure the in-phase and quadrature components of the modulating electromagnetic field. In an example embodiment, an optical carrier of the modulated optical signal transported using the first of the two channels and an optical carrier of the modulated optical signal transported using the second of the two channels have a fixed relative phase offset of approximately 90 degrees. The resulting ability of the optical receiver to measure each of the in-phase and quadrature components of the modulating electromagnetic field advantageously enables the optical receiver to perform electronic signal equalization, including but not limited to electronic dispersion compensation.

摘要翻译： 我们公开了一种光传输系统，其被配置为使用光传输链路的两个不同信道传输相同的数据，使得光接收机能够直接检测通过两个信道中的每一个接收的光功率来测量同相 和调制电磁场的正交分量。 在一个示例实施例中，使用两个信道中的第一个信道传输的调制光信号的光载波和使用两个信道中的第二个信道传输的调制光信号的光载波具有约90度的固定相对相位偏移。 光接收机测量调制电磁场中的每个同相和正交分量的最终能力有利地使得光接收机能够执行电子信号均衡，包括但不限于电子色散补偿。

公开(公告)号：US09002209B2

公开(公告)日：2015-04-07

申请号：US13413413

申请日：2012-03-06

申请人： June Koo Rhee ,  Kyu Sang Lee ,  Chan T. D. Thai

发明人： June Koo Rhee ,  Kyu Sang Lee ,  Chan T. D. Thai

IPC分类号： H04B10/00 ,  H04J14/00 ,  H04B10/548 ,  H04B10/67 ,  H04L5/00 ,  H04L27/20 ,  H04L27/26

CPC分类号： H04J14/007 ,  H04B10/548 ,  H04B10/67 ,  H04L5/0007 ,  H04L27/2096 ,  H04L27/2637 ,  H04L27/2653

摘要： Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.

摘要翻译： 公开了一种用于光学正交频分复用（OFDM）通信和发送和接收设备的前向离散/逆离散傅里叶变换设备和方法。 前向逆离散付里叶变换装置包括N 1：N个分离器，用于分割从N个输入接收到的与副载波的光频数相对应的子载波信号;相移延迟阵列模块，用于从1：N移位分离信号的相位 分流器，NN：1个用于耦合从相移延迟阵列模块输出的信号的功率耦合器，用于对来自N：1个功率耦合器的光OFDM符号执行时间延迟的延时阵列模块，以及用于耦合信号的N：1功率耦合器 从时间延迟阵列模块输出。