公开(公告)号：US20170303018A1

公开(公告)日：2017-10-19

申请号：US15491080

申请日：2017-04-19

申请人： AIRBUS OPERATIONS LIMITED

发明人： Kayvon BARAD

IPC分类号： H04Q11/00 ,  G02B6/42 ,  H04B10/079 ,  H04J14/02 ,  H04L29/08

CPC分类号： H04Q11/0066 ,  G02B6/2746 ,  G02B6/4206 ,  G02B6/4208 ,  G02B6/4215 ,  G02B6/4246 ,  G02B6/425 ,  H04B10/07957 ,  H04B10/27 ,  H04J14/0212 ,  H04L67/12 ,  H04Q2011/0083

摘要： An avionics unit for an avionics network is disclosed having a light emitter to provide a modulated broadband optical signal. The avionics unit also includes a first optical interface and a second optical interface. The first optical interface is optically connected to the light emitter and is to receive a removable wavelength selective filter to extract a modulated narrowband optical signal from the modulated broadband optical signal. The second optical interface is optically connected to the first optical interface and is to output the modulated narrowband optical signal.

公开(公告)号：US20170302397A1

公开(公告)日：2017-10-19

申请号：US15497380

申请日：2017-04-26

申请人： Mark E. Boduch ,  Kimon Papakos

发明人： Mark E. Boduch ,  Kimon Papakos

IPC分类号： H04J14/02 ,  H04B10/079 ,  H04Q11/00

CPC分类号： H04J14/0221 ,  H04B10/07955 ,  H04B10/07957 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0215 ,  H04J14/0217 ,  H04L25/03006 ,  H04L2025/03528 ,  H04Q11/0005 ,  H04Q2011/0016

摘要： Example embodiments of the present invention relate to optical wavelength directing devices used to construct compact optical nodes.

公开(公告)号：US20170230111A1

公开(公告)日：2017-08-10

申请号：US15422734

申请日：2017-02-02

申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

发明人： Chantal Vilà ,  Gregori Azcarate ,  Robert Pous

IPC分类号： H04B10/079 ,  H04B10/25 ,  H04B10/50 ,  H04J14/06 ,  H04B10/61 ,  H04Q11/00

CPC分类号： H04B10/0795 ,  H04B10/07 ,  H04B10/07955 ,  H04B10/07957 ,  H04B10/2504 ,  H04B10/503 ,  H04B10/61 ,  H04B10/6151 ,  H04J14/06 ,  H04Q11/0005

摘要： A coherent optical spectrum analyser for monitoring a spectrum of a fibre link is provided. The coherent optical spectrum analyser comprises an input connectable to the fibre link, the input being connected to a first input of a coherent detector having at least two input, the first and a second input, and an output. The coherent optical spectrum analyser further comprises a local oscillator having an output connected to the second input of the coherent detector, wherein the output of the coherent detector is connected to a first input of a processing unit, the processing unit also being connected to an input of the local oscillator, the processing unit being configured for analysing information from the coherent detector. The local oscillator comprises a semiconductor laser tuned by temperature to a specific wavelength and swept by changing a bias current, the local oscillator being controlled by the processing unit.

公开(公告)号：US20170214461A1

公开(公告)日：2017-07-27

申请号：US15410237

申请日：2017-01-19

申请人： FUJITSU LIMITED

发明人： Tomohiro YAMAUCHI ,  Shoichiro Oda

IPC分类号： H04B10/079 ,  H04J14/02

CPC分类号： H04B10/07957 ,  H04B10/0793 ,  H04B10/07955 ,  H04B10/0797 ,  H04B10/293 ,  H04B10/506 ,  H04B10/564 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0256 ,  H04J14/0257

摘要： An optical transmission apparatus includes a variable attenuator configured to adjust output intensity of each wavelength signal included in a multiplexed optical signal having been input; a monitor configured to measure an output spectrum of the variable attenuator; a calculation unit configured to calculate an amount of spectral narrowing and an amount of spectral surplus, based on a measured value by the monitor, and a target value set in advance; and a control unit configured to control an amount of attenuation of the variable attenuator, based on the amount of spectral narrowing and the amount of spectral surplus.

公开(公告)号：US09698905B2

公开(公告)日：2017-07-04

申请号：US14712195

申请日：2015-05-14

申请人： FUJITSU LIMITED

发明人： Taku Saito ,  Kosuke Komaki ,  Taketo Endo

IPC分类号： H04B10/08 ,  H04B10/079 ,  H04B10/077 ,  H04J14/02

CPC分类号： H04B10/07957 ,  H04B10/0779 ,  H04B10/0799 ,  H04B2210/074 ,  H04J14/0256

摘要： An optical transmission system includes comprising: a first optical transmission apparatus to transmit wavelength-multiplexed optical signals; and a second optical transmission apparatus to receive the wavelength-multiplexed optical signals, the second optical transmission apparatus including: a receiver to perform digital coherent reception; a wavelength spacing monitor to transform a reception signal obtained by the digital coherent reception from a time domain signal to a frequency domain spectrum signal, and to monitor wavelength spacing of the spectrum signal; and a transmitter to transmit, to the first optical transmission apparatus, wavelength control information according to a monitor result obtained by the wavelength spacing monitor or the monitor result, wherein the first optical transmission apparatus includes: a receiver to receive the wavelength control information or the monitor result; and a control unit to control the wavelength spacing based on the wavelength control information or the monitor result received by the receiver.

公开(公告)号：US09692545B2

公开(公告)日：2017-06-27

申请号：US14904031

申请日：2014-03-27

申请人： NEC Corporation

发明人： Yusuke Yamauchi

IPC分类号： H04B10/06 ,  H04J14/02 ,  H04B10/61 ,  H04B10/079 ,  H04J14/06

CPC分类号： H04J14/0221 ,  H04B10/07957 ,  H04B10/0797 ,  H04B10/0799 ,  H04B10/61 ,  H04B10/615 ,  H04B10/616 ,  H04J14/06

摘要： An optical reception apparatus (1) of the present invention includes: a local oscillator (11) outputting local oscillation light (22); an optical mixer (12) receiving a multiplexed optical signal (21) and the local oscillation light, and selectively outputting an optical signal (23) corresponding to the wavelength of the local oscillation light from the multiplexed optical signal; a photoelectric converter (13) converting the optical signal (23) output from the optical mixer into an electric signal (24); a variable gain amplifier (15) amplifying the electric signal (24) to generate an output signal (25) whose output amplitude is amplified to a certain level; a gain control signal generating circuit (16) generating a gain control signal (26) for controlling the gain of the variable gain amplifier (15); and a monitor signal generating unit (17) generating a monitor signal (27) corresponding to the power of the optical signal (23) using the gain control signal (26).

公开(公告)号：US20170170898A1

公开(公告)日：2017-06-15

申请号：US15300097

申请日：2014-03-31

申请人： Accelink Technologies Co., Ltd.

发明人： Yanfeng Fu ,  Qianggao Hu ,  Di Zhang ,  Shenglei Hu ,  Yong Luo

IPC分类号： H04B10/079 ,  H04J14/02

CPC分类号： H04B10/07957 ,  H04B10/0731 ,  H04B10/079 ,  H04B10/0799 ,  H04J14/00 ,  H04J14/02 ,  H04J14/0282

摘要： Disclosed is a method for monitoring the wavelength of a tunable laser device of user by local OLT. The method is applied to a wavelength division multiplexing passive optical network framework. The framework comprises an ONU, a first athermal array waveguide grating, a transmission optical fiber, a second athermal array waveguide grating and the OLT, which are sequentially connected. ONU comprises tunable wavelength optical transmitters. The method comprises: starting handshaking is carried out between the OLT and the ONU; and the OLT carries out wavelength drifting monitoring during operation of the ONU. Wavelength adjustment can be carried out on the multi-channel tunable laser device in an external auxiliary monitoring environment, thus channel wavelengths of the multi-channel tunable laser device can be accurately controlled, and the requirement for calibration accuracy of channels of the tunable laser device at the ONU is greatly reduced.

公开(公告)号：US09667346B2

公开(公告)日：2017-05-30

申请号：US14987106

申请日：2016-01-04

申请人： FUJITSU LIMITED

发明人： Hirofumi Araki ,  Taku Saito ,  Yoshitaka Taki ,  Satoru Miyazaki

IPC分类号： H04B10/00 ,  H04B10/572 ,  H04B10/079 ,  H04J14/02

CPC分类号： H04B10/572 ,  H04B10/07957 ,  H04J14/02

摘要： An optical transmission system includes: a transmission node to transmit wavelength-multiplexed light of a plural wavelengths arranged in a predetermined transmission band; and a reception node to receive the wavelength-multiplexed light, and to include a monitor to monitor a detection sensitivity indicating a sampling phase shift with respect to a phase of light corresponding to one among the received plural wavelengths, and a transmitter to transmit information indicating that the monitored detection sensitivity for light corresponding to a wavelength adjacent to an outer edge of the transmission band, among the plural wavelengths, has been reduced below a threshold value, to the transmission node, wherein the transmission node includes a receiver to receive information indicating a reduction in the detection sensitivity, and a controller to stop wavelength control of shifting the wavelength adjacent to the outer edge in a direction approaching the outer edge in response to reception of the information.

公开(公告)号：US20170122812A1

公开(公告)日：2017-05-04

申请号：US14927915

申请日：2015-10-30

申请人： Ciena Corporation

发明人： Vipul BHATNAGAR ,  Michael Y. FRANKEL

IPC分类号： G01J9/00

CPC分类号： H04B10/07957 ,  G01J3/46 ,  G01J3/50 ,  G01J9/00 ,  G01J9/04 ,  H04B10/61 ,  H04J14/02

摘要： Systems and methods to detect a wavelength of interest (λRX) amongst one or more wavelengths (λ1, λ2, . . . , λN) include receiving the one or more wavelengths (λ1, λ2, . . . , λN); using a portion of a transmitted wavelength (λTX) as a Local Oscillator (LO) signal to perform performing coherent detection with the one or more wavelengths, wherein the transmitted wavelength (λTX) and the wavelength of interest (λRX) are a bi-directional communication link; and determining a presence of the wavelength of interest (λRX) based on the coherent detection.

公开(公告)号：US20160365922A1

公开(公告)日：2016-12-15

申请号：US14740010

申请日：2015-06-15

申请人： FINSAR CORPORATION

发明人： Ziv Lipkin

IPC分类号： H04B10/079 ,  H04B3/487 ,  H04J14/02

CPC分类号： H04B10/07957 ,  H04B3/487 ,  H04B10/695 ,  H04J14/0227

摘要： According to an aspect of an embodiment, a method may include receiving a digital data signal at an optical receiver. The method may further include measuring an eye quality of the received digital data signal. In addition, the method may include adjusting a decision threshold of the optical receiver based on the measured eye quality.

摘要翻译： 根据实施例的一个方面，一种方法可以包括在光接收器处接收数字数据信号。 该方法还可以包括测量所接收的数字数据信号的眼睛质量。 此外，该方法可以包括基于所测量的眼睛质量来调整光学接收器的判定阈值。