公开(公告)号：EP0365496A1

公开(公告)日：1990-04-25

申请号：EP89850254.7

申请日：1989-08-14

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON

Inventor： Thylén, Lars Helge

IPC: G02B6/42 ,  H04B10/12

CPC classification number: H04B10/43 ,  H01S5/50

Abstract: A laser arrangement in an optical communication system has a semiconductor laser (1) which includes an optical waveguide (4) whose end surfaces (5,8) have reflection-inhibiting coatings. The end surfaces (5, 8) are connected to a respective first connection (7, 10) of a first (2) and a second (3) directional coupler switch. Each of the directional coupler switches (2,3) have a second connection (13, 14), which is provided with mirrors (15, 16), and a third connection (11, 12), which is connected to a respective optical fibre (17, 18) in the communication system. In a receiving and amplifying state, an incoming light signal (P1) is coupled by the first coupler switch (2) to the laser diode (1), where the signal is amplified by a drive current (I) and detected (24). The amplified signal (P2) is coupled to the outgoing fibre (18) by the second coupler switch (3). In a light generating state, the first directional coupler switch (2) is in its cross state and the second directional coupler switch (3) is in an intermediate state, between its two terminal states, so that the mirrors (15, 16) define a cavity which includes the laser diode (1). By modulating the drive current (I) around the lasering threshold, a signal can be transmitted on the outgoing fibre (18). Alternatively, the laser arrangement can be modulated with the aid of the directional coupler switches (2, 3) for the purpose of transmitting the signal.

Abstract translation: 光通信系统中的激光装置具有半导体激光器（1），其包括端面（5,8）具有反射抑制涂层的光波导（4）。 端面（5,8）连接到第一（2）和第二（3）定向耦合器开关的相应的第一连接件（7,10）。 每个定向耦合器开关（2,3）具有设置有反射镜（15,16）的第二连接（13,14）和连接到相应光纤的第三连接（11,12） （17,18）。 在接收和放大状态下，入射光信号（P1）由第一耦合器开关（2）耦合到激光二极管（1），其中信号被驱动电流（I）放大并被检测（24）。 放大信号（P2）由第二耦合器开关（3）耦合到输出光纤（18）。 在发光状态下，第一定向耦合器开关（2）处于其交叉状态并且第二定向耦合器开关（3）处于其两个端子状态之间的中间状态，使得反射镜（15,16）限定 包括激光二极管（1）的腔。 通过调制围绕激光阈值的驱动电流（I），可以在输出光纤（18）上传输信号。 或者，为了发送信号，可以借助于定向耦合器开关（2,3）来调制激光装置。

公开(公告)号：EP0001728B1

公开(公告)日：1982-12-22

申请号：EP78400120.8

申请日：1978-09-29

Applicant: THOMSON-CSF

Inventor： de Cremoux, Baudouin

IPC: H01L31/10 ,  H01L33/00

CPC classification number: H04B10/43 ,  G02B6/4246 ,  H01L31/109 ,  H01L31/125 ,  H01L33/0025

公开(公告)号：EP3389199A1

公开(公告)日：2018-10-17

申请号：EP15911856.1

申请日：2015-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： LI, Shu ,  WANG, Zelin ,  LI, Yuanmou

IPC: H04B10/43 ,  G02B6/42

CPC classification number: G02B6/4246 ,  G02B6/42 ,  G02B6/4215 ,  G02B6/4257 ,  G02B6/4263 ,  G02B6/4277 ,  H04B10/40 ,  H04B10/43 ,  H04J14/02

Abstract: Embodiments of the present invention provide a bidirectional optical sub assembly, to eliminate optical and electrical crosstalk between a receiver and a transmitter in the bidirectional optical sub assembly. The bidirectional optical sub assembly includes: a base, made of a conducting material and including a first part and a second part; a wavelength division multiplexing part, configured to: reflect an optical signal of a first wavelength, or transmit an optical signal of a second wavelength, where the first wavelength is different from the second wavelength; an input port, configured to transmit a first electrical signal to a transmitter; the transmitter, configured to: convert the first electrical signal into a first optical signal, and transmit the first optical signal to the wavelength division multiplexing part, where the wavelength division multiplexing part is configured to reflect the first optical signal, and the wavelength division multiplexing part is further configured to transmit a second optical signal to a receiver; the receiver, configured to: convert the second optical signal into a second electrical signal, and output the second electrical signal by using an output port; and an isolation part, configured to electromagnetically isolate the receiver from the transmitter.

公开(公告)号：EP3125446B1

公开(公告)日：2018-10-17

申请号：EP16181939.6

申请日：2016-07-29

Applicant: Google LLC

Inventor： Dangui, Vinayak ,  Koley, Bikash ,  Vusirikala, Vijay ,  Hofmeister, Ralph Theodore

IPC: H04B10/43 ,  H04B10/63 ,  H04J14/02

CPC classification number: H04B10/40 ,  H04B10/43 ,  H04B10/63 ,  H04J14/02 ,  H04J14/0279

Abstract: This disclosure provides systems, methods, and apparatus for improving spectral efficiency of a communication system. The communication system can include a transmitter, a receiver and a communication link for communicating data between the transmitter and the receiver. The transmitter can employ a multi-carrier technique to transmit data to the receiver. The transmitter can generate a plurality of carrier signals using a receiver-side comb generator, one of which is sent to the transmitter as a pilot carrier signal combined with modulated carrier signals over an optical link. At the receiver the receiver-side comb generator uses the pilot carrier signal to generate a plurality of receiver-side carrier signals, which are used for detecting the modulated carrier signals. As the phase noise in the modulated carrier signals and the phase noise in the receiver-side carrier signals have the same characteristics, the phase noise is cancelled at the receiver, resulting in improved detection.

公开(公告)号：EP2927722B1

公开(公告)日：2018-10-17

申请号：EP13859311.6

申请日：2013-11-26

Applicant: Hamamatsu Photonics K.K. ,  Nanjing Guanglu Electronics Co. Ltd. ,  China Electric Power Research Institute

Inventor： INAGAKI, Yuto ,  SUZUKI, Takayuki ,  HU, Guoxiang ,  HAO, Weimin

IPC: G02B6/42 ,  H04B10/00 ,  H04B10/43 ,  H04B10/40 ,  H04B10/25

CPC classification number: H04B10/40 ,  G02B6/4246 ,  H04B10/25 ,  H04B10/43 ,  H04B10/572

Abstract: A single-core optical transceiver 1 is an optical transceiver for transmitting or receiving an optical signal through a single optical fiber 2. The single-core optical transceiver 1 has a light emitting device 13 for transmitting the optical signal and a light receiving device 12 for receiving the optical signal. The light emitting device 13 is an LED configured including a sapphire substrate 13b arranged on a light receiving surface 12a of the light receiving device 12 so as to be coaxial with the light receiving surface 12a, and a nitride semiconductor layer 13a laid on the sapphire substrate 13b. Even with the light emitting device 13 being arranged on the light receiving surface 12a of the light receiving device 12, the optical signal from the optical fiber 2 can be received on the entire area of the light receiving surface 12a, so as to adequately improve the light sensitivity.

公开(公告)号：EP3125446A1

公开(公告)日：2017-02-01

申请号：EP16181939.6

申请日：2016-07-29

Applicant: Google Inc.

Inventor： Dangui, Vinayak ,  Koley, Bikash ,  Vusirikala, Vijay ,  Hofmeister, Ralph Theodore

IPC: H04B10/43 ,  H04B10/63 ,  H04J14/02

CPC classification number: H04B10/40 ,  H04B10/43 ,  H04B10/63 ,  H04J14/02 ,  H04J14/0279

Abstract: This disclosure provides systems, methods, and apparatus for improving spectral efficiency of a communication system. The communication system can include a transmitter, a receiver and a communication link for communicating data between the transmitter and the receiver. The transmitter can employ a multi-carrier technique to transmit data to the receiver. The transmitter can generate a plurality of carrier signals using a receiver-side comb generator, one of which is sent to the transmitter as a pilot carrier signal combined with modulated carrier signals over an optical link. At the receiver the receiver-side comb generator uses the pilot carrier signal to generate a plurality of receiver-side carrier signals, which are used for detecting the modulated carrier signals. As the phase noise in the modulated carrier signals and the phase noise in the receiver-side carrier signals have the same characteristics, the phase noise is cancelled at the receiver, resulting in improved detection.

Abstract translation: 本公开提供了用于提高通信系统的频谱效率的系统，方法和装置。 通信系统可以包括用于在发射机和接收机之间传送数据的发射机，接收机和通信链路。 发射机可以采用多载波技术向接收机发送数据。 发射机可以使用接收机侧梳状发生器产生多个载波信号，其中一个发送机作为与光链路上调制载波信号组合的导频载波信号发送到发射机。 在接收机处，接收机侧梳状发生器使用导频载波信号来产生多个接收机侧载波信号，用于检测已调制载波信号。 由于调制载波信号中的相位噪声和接收机侧载波信号的相位噪声具有相同的特性，因此在接收机处消除相位噪声，从而改善了检测。

公开(公告)号：EP2819326A1

公开(公告)日：2014-12-31

申请号：EP13305869.3

申请日：2013-06-24

Applicant: ALCATEL LUCENT

Inventor： Poehlmann, Wolfgang, W. ,  Deppisch, Bernhard, W.

IPC: H04B10/43

CPC classification number: H04B10/43

Abstract: The present document relates to an optical transceiver (100) comprising:
- a transmitter element (110) adapted to emit a first optical signal (OS1) using a p-n-junction;
- an optical output (120) for transmitting the first optical signal (OS1) emitted by the transmitter element (110) to an optical communication link (130) in a forward direction (FWD);

wherein the transmitter element (110) is adapted to
- receive a second optical signal (OS2) propagating in the optical communication link (130) in a backward direction (BWD) using the same p-n-junction; and
- generate an electrical signal based on the received second optical signal (OS2).

Abstract translation: 本发明涉及一种光收发器（100），包括： - 适于使用p-n结发射第一光信号（OS1）的发射机元件（110） - 用于将发射机元件（110）发射的第一光信号（OS1）向前传送（FWD）的光通信链路（130）的光输出（120）。 其中所述发射机元件（110）适于使用相同的p-n结接收在所述光通信链路（130）中以向后方向（BWD）传播的第二光信号（OS2） 以及 - 基于所接收的第二光信号（OS2）产生电信号。

公开(公告)号：EP0553029B1

公开(公告)日：1997-09-24

申请号：EP93400142.1

申请日：1993-01-21

Applicant: FRANCE TELECOM

Inventor： Nakajima, Hisao ,  Derouiche, Radhouane

IPC: H04B10/24 ,  H04B10/06

CPC classification number: H04B10/43 ,  H01S5/0028 ,  H01S5/0264 ,  H01S5/0425 ,  H01S5/12 ,  H01S5/4006 ,  H01S5/5045

公开(公告)号：EP0718993A1

公开(公告)日：1996-06-26

申请号：EP95119505.6

申请日：1995-12-11

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Bolze, Thomas, Dr.rer.nat. ,  Neidlinger, Stephan, Dr.-Ing. ,  Neuhaus, Thomas, Dipl.-Ing. ,  Weiske, Klaus-Jörg, Dipl.-Ing. ,  Das, Chandan, Dr.-Ing- ,  Knoblauch, Henrik

IPC: H04B10/28 ,  H01S3/096

CPC classification number: H04B10/43 ,  H01S5/0028 ,  H01S5/0427 ,  H01S5/06213

Abstract: Der von einer Arbeitspunktregelschaltung her mit einem Vorstrom und von einer Modulationsschaltung her mit einem Modulationsstrom beaufschlagten Laserdiode die Serienschaltung eines ohmschen Widerstands und einer Schottky-Diode parallelgeschaltet ist, mit deren Verbindungspunkt von ohmschem Widerstand und Schottky-Diode der Eingang eines empfangsseitigen Transimpedanzverstärkers kapazitiv verbunden ist.Der Schottky-Diode kann die Serienschaltung eines ohmschen Widerstands und eines bei Sendebetrieb leitenden Transistorschalters parallelgeschaltet sein, an dessen Verbindungspunkt von ohmschem Widerstand und Transistorschalter der Eingang des Transimpedanzverstärkers kapazitiv angeschlossen ist; dem an einer Sperrpotentialquelle für die Laserdiode liegenden Transistorschalter kann die Serienschaltung eines gegensinnig zum Transistorschalter gesteuerten Überbrückungsschalters und eines ohmschen Widerstands parallelgeschaltet sein, dessen Widerstandswert groß gegen den Eingangswiderstandswert des Transimpedanzverstärkers und klein gegen den Sperrwiderstandswert der Laserdiode ist.

Abstract translation: 该电路使用一个电阻器（R1）和连接在横跨激光二极管（LD）平行串联二极管（D），与电阻器和二极管电容连接到互阻抗放大器的（TIV），用于接收所述输入之间的结 侧。 县。 肖特基二极管时，并联连接的串联电路包含第二电阻器（R2）和一个开关晶体管（S），其全部是在传输模式期间导通。

公开(公告)号：EP0586285A1

公开(公告)日：1994-03-09

申请号：EP93402089.2

申请日：1993-08-24

Applicant: THOMSON HYBRIDES

Inventor： Defrancq, Jean-Marc ,  Barnabé, Florence ,  Rouzier, Alain

IPC: H04B10/24 ,  H01S3/00 ,  H04B10/28

CPC classification number: H04B10/43 ,  H01S5/0014

Abstract: L'invention concerne une tête optique ne comportant qu'un seul composant optoélectronique, un laser (DL) , pour l'émission et la réception sur une seule fibre optique (FO).
L'utilisation d'un unique laser pour l'émission et la réception est rendue possible par un circuit de commutation, commandé par deux transistors (Q1,Q2), qui polarise le laser (DL) en direct pour l'émission ou en inverse pour la réception.
Application aux transmissions de données par voie optique, entre 1 et 10 GHz.

Abstract translation: 本发明涉及一种仅包含一个单一光电子部件的光学头，用于在单根光纤（FO）上发送和接收的激光器（DL）。 使用单个激光器进行发送和接收是由切换电路实现的，该开关电路由两个晶体管（Q1，Q2）控制，该晶体管偏置激光器（DL），向前发送或反向接收。 应用于1至10 GHz之间的光通道数据传输。