公开(公告)号：US09859986B2

公开(公告)日：2018-01-02

申请号：US15170185

申请日：2016-06-01

Applicant: FUJIKURA LTD.

Inventor： Takayuki Tanaka ,  Minako Hayashi

IPC: H01J40/14 ,  H04B10/69 ,  G01J1/44 ,  H03F3/08 ,  H03F3/45

CPC classification number: H04B10/697 ,  G01J1/44 ,  G01J2001/444 ,  H03F3/087 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/375 ,  H03F2200/405 ,  H03F2200/453 ,  H03F2200/462 ,  H03F2200/481 ,  H03F2203/45152 ,  H03F2203/45212 ,  H04B10/69 ,  H04B10/695

Abstract: The present disclosure includes a photodetector element (11) that converts an optical signal into an electric current signal; a transimpedance amplifier (12a) that converts the electric current signal into a voltage signal; a differential amplifier (12d) that converts the voltage signal into a differential signal, by performing differential amplification of a difference between the voltage signal and a threshold voltage; an LOS detection circuit that detects a no-signal section of the optical signal; and an MCU that repeatedly executes offset cancellation processing, the offset cancellation processing including threshold voltage change processing in which the threshold voltage is changed such that an offset voltage of the differential signal is reduced, the MCU 13 skipping the threshold voltage change processing in the no-signal section.

公开(公告)号：US20170366276A1

公开(公告)日：2017-12-21

申请号：US15532927

申请日：2015-12-02

Applicant: SUNPARTNER TECHNOLOGIES

Inventor： Franck AVELINE ,  Emilie BIALIC ,  Nicolas CHAUMONT

IPC: H04B10/69 ,  H04B10/54 ,  H04B10/116 ,  H04B10/58 ,  H04B10/114

CPC classification number: H04B10/697 ,  H04B10/1141 ,  H04B10/1143 ,  H04B10/116 ,  H04B10/54 ,  H04B10/58 ,  H04B10/691

Abstract: The invention relates to a bidirectional wireless communication device which is based on the use of light, including emitting modules, each emitting amplitude- and/or phase-modulated light; and a receiving module made up of: a photodetector illuminated by said modulated light and generating a modulated electrical signal in response to said modulated light; and a processing module for processing the signal generated by said photodetector. The receiving module includes an electronic means positioned between the photodetector and the signal-processing module and capable of matching the impedance of the photodetector to maximise the signal-to-noise ratio of the electrical signal by minimising distortions of said electronic signal associated with incorrect impedance matching at the output of the photodetector, while maximising the level of the modulated electrical signal and the throughput of transmitted data.

公开(公告)号：US20170357110A1

公开(公告)日：2017-12-14

申请号：US15179704

申请日：2016-06-10

Applicant: Futurewei Technologies, Inc.

Inventor： Tiangong Liu ,  Hongbing Lei ,  Xiao Shen

IPC: G02F1/01 ,  H04B10/69 ,  G02F1/225 ,  H04J14/08 ,  H04B10/516 ,  H04B10/58 ,  G02F1/21

CPC classification number: G02F1/0123 ,  G02F1/225 ,  G02F2001/212 ,  H04B10/50575 ,  H04B10/5161 ,  H04B10/532 ,  H04B10/58 ,  H04B10/697 ,  H04J14/086

Abstract: A Dual Parallel (DP)-Inphase/Quadrature (I/Q) Mach-Zehnder Modulator (MZM) bias controller configured to generate a pair of orthogonal dither signals; multiply the pair of dither signals to create a second order orthogonal dither signal; and lock an Inphase (I) I MZM of a DP-I/Q MZM to a value of a corresponding I component of a transmission signal by applying the pair of orthogonal dither signal to a Quadrature (Q) MZM and a Phase (P) MZM of the DP-I/Q MZM; applying an I bias signal to the I MZM of the DP-I/Q MZM; detecting an output of the DP-I/Q MZM; and determining an I error signal in the output of the I MZM of the DP-I/Q MZM based on the product of second order dither signal and the output of the DP-I/Q MZM.

公开(公告)号：US20170264368A1

公开(公告)日：2017-09-14

申请号：US15453102

申请日：2017-03-08

Applicant: ADVA Optical Networking SE

Inventor： Michael Eiselt ,  Annika Dochhan

IPC: H04B10/516 ,  H04B10/69

CPC classification number: H04B10/516 ,  H04B10/2507 ,  H04B10/5165 ,  H04B10/69 ,  H04B10/697

Abstract: A method for creating an optical transmit signal includes creating an electrical discrete multi-tone signal according to digital input data carrying the information to be transmitted, the discrete multi-tone signal having a plurality of electrical partial signals, each electrical partial signal defining a sub-channel. Each electrical partial signal includes a sub-carrier at a predetermined sub-carrier frequency which is modulated according to a dedicated modulation scheme, so that a dedicated portion of the digital input data is included in each sub-channel. The method includes creating an optical signal by using the electrical discrete multi-tone signal as modulating signal for amplitude-modulating the intensity of an optical carrier signal. The method further includes bandpass-filtering the optical signal in order to create an optical single sideband or vestigial sideband transmit signal. An optical transmitter device for creating such an optical transmit signal and to an optical transmitter and receiver device includes a respective optical transmitter device.

公开(公告)号：US20170244484A1

公开(公告)日：2017-08-24

申请号：US15592162

申请日：2017-05-10

Applicant: SUREFIRE LLC

Inventor： Narkis E. Shatz ,  John C. Bortz

IPC: H04B10/116 ,  H04B10/60

CPC classification number: H04N5/23293 ,  G02B13/0015 ,  G02B19/0009 ,  G02B19/0023 ,  G02B19/009 ,  G02B19/0095 ,  G06F3/0481 ,  G06F3/04842 ,  G06F3/14 ,  G06K9/00671 ,  G06Q30/0277 ,  G06Q30/0643 ,  G06T7/70 ,  G06T11/00 ,  G06T11/60 ,  G06T19/006 ,  G06T2200/04 ,  G08C23/04 ,  H04B10/11 ,  H04B10/114 ,  H04B10/1141 ,  H04B10/1143 ,  H04B10/116 ,  H04B10/50 ,  H04B10/516 ,  H04B10/5162 ,  H04B10/541 ,  H04B10/60 ,  H04B10/615 ,  H04B10/616 ,  H04B10/66 ,  H04B10/697 ,  H04B17/23 ,  H04M1/72522 ,  H04M1/737 ,  H04N5/23216 ,  H04N5/23296 ,  H04N5/2351 ,  H04N5/272 ,  H04N7/22 ,  H04N21/4126 ,  H04N21/42204 ,  H04W4/21 ,  H04W8/005 ,  H04W84/18 ,  H04W88/16

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.

公开(公告)号：US20170195644A1

公开(公告)日：2017-07-06

申请号：US15395866

申请日：2016-12-30

Applicant: SureFire LLC

Inventor： Narkis E. Shatz ,  John C. Bortz

IPC: H04N7/22 ,  H04B10/50 ,  H04B10/66

CPC classification number: H04N5/23293 ,  G02B13/0015 ,  G02B19/0009 ,  G02B19/0023 ,  G02B19/009 ,  G02B19/0095 ,  G06F3/0481 ,  G06F3/04842 ,  G06F3/14 ,  G06K9/00671 ,  G06Q30/0277 ,  G06Q30/0643 ,  G06T7/70 ,  G06T11/00 ,  G06T11/60 ,  G06T19/006 ,  G06T2200/04 ,  G08C23/04 ,  H04B10/11 ,  H04B10/114 ,  H04B10/1141 ,  H04B10/1143 ,  H04B10/116 ,  H04B10/50 ,  H04B10/516 ,  H04B10/5162 ,  H04B10/541 ,  H04B10/60 ,  H04B10/615 ,  H04B10/616 ,  H04B10/66 ,  H04B10/697 ,  H04B17/23 ,  H04M1/72522 ,  H04M1/737 ,  H04N5/23216 ,  H04N5/23296 ,  H04N5/2351 ,  H04N5/272 ,  H04N7/22 ,  H04N21/4126 ,  H04N21/42204 ,  H04W4/21 ,  H04W8/005 ,  H04W84/18 ,  H04W88/16

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.

公开(公告)号：US20170193300A1

公开(公告)日：2017-07-06

申请号：US15395793

申请日：2016-12-30

Applicant: SureFire LLC

Inventor： Narkis E. Shatz ,  John C. Bortz

IPC: G06K9/00 ,  H04W4/20 ,  G06T11/60 ,  H04B10/116

CPC classification number: H04N5/23293 ,  G02B13/0015 ,  G02B19/0009 ,  G02B19/0023 ,  G02B19/009 ,  G02B19/0095 ,  G06F3/0481 ,  G06F3/04842 ,  G06F3/14 ,  G06K9/00671 ,  G06Q30/0277 ,  G06Q30/0643 ,  G06T7/70 ,  G06T11/00 ,  G06T11/60 ,  G06T19/006 ,  G06T2200/04 ,  G08C23/04 ,  H04B10/11 ,  H04B10/114 ,  H04B10/1141 ,  H04B10/1143 ,  H04B10/116 ,  H04B10/50 ,  H04B10/516 ,  H04B10/5162 ,  H04B10/541 ,  H04B10/60 ,  H04B10/615 ,  H04B10/616 ,  H04B10/66 ,  H04B10/697 ,  H04B17/23 ,  H04M1/72522 ,  H04M1/737 ,  H04N5/23216 ,  H04N5/23296 ,  H04N5/2351 ,  H04N5/272 ,  H04N7/22 ,  H04N21/4126 ,  H04N21/42204 ,  H04W4/21 ,  H04W8/005 ,  H04W84/18 ,  H04W88/16

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.

公开(公告)号：US20160352434A1

公开(公告)日：2016-12-01

申请号：US15235274

申请日：2016-08-12

Applicant: Transmode Systems AB

Inventor： Gunnar FORSBERG

IPC: H04B10/69 ,  H04B10/524

CPC classification number: H04B10/697 ,  H04B10/077 ,  H04B10/524 ,  H04B10/541 ,  H04B2210/074

Abstract: Described are, among other things, a method and a receiver for receiving a management data signal in an optical transmission system where a traffic data signal is transmitted as a NRZ modulated signal. The traffic data signal has a management data signal superimposed thereon as a pulse width modulation of the symbols of the NRZ modulated signal. The NRZ modulated signal is received with the data signal superimposed thereon and the traffic data signal is recovered. The recovered traffic data signal in anti-phase is added to the received signal. The management data signal is detected from the added signals.

Abstract translation: 尤其涉及用于在作为NRZ调制信号发送业务数据信号的光传输系统中接收管理数据信号的方法和接收机。 交通数据信号具有叠加在其上的管理数据信号作为NRZ调制信号的符号的脉宽调制。 NRZ调制信号被叠加在其上的数据信号被接收并且业务数据信号被恢复。 将恢复的反相的业务数据信号加到接收信号上。 从附加的信号中检测管理数据信号。

公开(公告)号：US20160248503A1

公开(公告)日：2016-08-25

申请号：US15046537

申请日：2016-02-18

Applicant: The Government of the United States of America, as represented by the Secretary of the Navy

Inventor： Jason D. McKinney ,  Vincent J. Urick ,  John F. Diehl ,  Keith J. Williams

IPC: H04B10/11 ,  H04B10/60

CPC classification number: H04B10/2575 ,  H04B10/697 ,  H04B2210/006

Abstract: Systems and method are provided to for suppressing interference signals in optical systems, without prior knowledge of the type of location of the interferers, while maintaining a linear response to small signals of interest (SOI). By exploiting the unique power (or voltage) dependent transmission function of an externally angle-modulated photonic link, embodiments of the present disclosure are configured to provide strong, wideband interference suppression without requiring detailed knowledge of the interfering signal.

Abstract translation: 为了抑制光学系统中的干扰信号，提供了系统和方法，同时保持对感兴趣的小信号（SOI）的线性响应，而无需事先了解干扰源的位置类型。 通过利用外部角度调制光子链路的独特的功率（或电压）依赖的传输功能，本公开的实施例被配置为提供强的宽带干扰抑制，而不需要干扰信号的详细知识。

公开(公告)号：US09425901B2

公开(公告)日：2016-08-23

申请号：US14552159

申请日：2014-11-24

Applicant: SILICON LINE GMBH

Inventor： Martin Groepl ,  Holger Fritsche ,  Holger Hoeltke

IPC: H04B10/69

CPC classification number: H04B10/697 ,  H04B10/6911

Abstract: In order to be able to receive any digital optical signals in the bandwidth range from zero bits per second to the high Gbits/second range with as little circuit complexity as possible and to be able to process said signals with the least possible energy requirement for reprocessing, the invention proposes a circuit arrangement as well as a method for receiving digital optical signals by means of at least one light-receiving component connected upstream of at least one signal input port, particularly by means of at least one photodiode, wherein the unipolar current signal coming from the light-receiving component through the signal input port is transformed into a bipolar current signal by means of a compensation current provided by at least one current source, the value of said current being defined by means of at least one digital register.

Abstract translation: 为了能够在尽可能少的电路复杂度的情况下接收从零比特/秒到高千兆位/秒范围的带宽范围内的任何数字光信号，并且能够以尽可能少的能量需求处理所述信号以进行再处理 本发明提出一种电路装置以及一种通过至少一个连接在至少一个信号输入端口上游的光接收部件，特别是借助于至少一个光电二极管来接收数字光信号的方法，其中单极性电流 通过信号输入端口从光接收部件来的信号通过由至少一个电流源提供的补偿电流而变换为双极电流信号，所述电流的值由至少一个数字寄存器限定。