公开(公告)号：EP2778771A1

公开(公告)日：2014-09-17

申请号：EP12834969.3

申请日：2012-09-28

申请人： Sumitomo Osaka Cement Co., Ltd.

发明人： SAKAI Takeshi ,  MURE Masahito ,  ICHIKAWA Junichiro

IPC分类号： G02F1/035 ,  H04B10/50 ,  H04B10/60 ,  H04B10/40 ,  H04B10/588

CPC分类号： H04B10/548 ,  H04B10/5053 ,  H04B10/5057 ,  H04B10/5165 ,  H04B10/564

摘要： It is possible to suppress carrier light with a simple configuration when modulating the carrier light to generate optical sideband components. An optical carrier-suppressed signal generator includes first splitting means used to split input carrier light into two light beams, an optical modulator which modulates one split carrier light beam and outputs light including optical sideband components, a phase modulator which phase-modulates another split carrier light beam, and second or third splitting means used to split the output light of the optical modulator into two light beams. The output light split by the second or third splitting means and the output light of the phase modulator are multiplexed to obtain the amplitude of the signal waveform of optical power, and the optical modulator is controlled such that the obtained value is minimized.

公开(公告)号：EP2748959A1

公开(公告)日：2014-07-02

申请号：EP11804572.3

申请日：2011-12-22

申请人： Telefonaktiebolaget LM Ericsson (PUBL)

发明人： CAVALIERE, Fabio ,  POTI, Luca ,  MELONI, Gianluca ,  SECONDINI, Marco

IPC分类号： H04J14/06 ,  H04B10/588

CPC分类号： H04J14/06 ,  H04B10/5161 ,  H04B10/541 ,  H04B10/556 ,  H04J14/02 ,  H04J14/0223 ,  H04J14/0273 ,  H04J14/08

摘要： A muxponder (10) comprising: modulation format conversion apparatus (12) comprising: first and second inputs (14, 16) each arranged to receive an amplitude modulated tributary optical signal (18, 20) carrying a communications traffic bit stream; first and second optical to electrical signal conversion apparatus (22, 24) each arranged to receive a respective tributary optical signal and to convert it into a corresponding tributary electrical signal (26, 28) carrying the communications traffic bit stream; a delay element (30) arranged to synchronise the communications traffic bit streams; and an optical IQ modulator (34) arranged to receive an optical carrier signal (36) and the tributary electrical signals. The optical IQ modulator having an in-phase arm and a quadrature arm, each arm being arranged to receive one of the tributary electrical signals such that each tributary electrical signal drives the respective arm of the optical IQ modulator to encode the communications traffic bit streams onto the optical carrier signal in a multilevel modulation format.

公开(公告)号：EP1927883A4

公开(公告)日：2009-02-11

申请号：EP06798089

申请日：2006-09-19

申请人： NAT INST INF & COMM TECH

发明人： KAWANISHI TETSUYA ,  IZUTSU MASAYUKI ,  SAKAMOTO TAKAHIDE ,  TSUCHIYA MASAHIRO

IPC分类号： G02F1/03 ,  G02F1/035 ,  H04B10/516 ,  H04B10/524 ,  H04B10/54 ,  H04B10/556 ,  H04B10/572 ,  H04B10/588 ,  H04B10/61 ,  H04L27/20

CPC分类号： G02F1/225 ,  G02F1/0121 ,  G02F1/0316 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5165 ,  H04B10/541 ,  H04B10/5563

摘要： To provide an optical modulator capable of controlling the phase of a USB signal and the phase of an LSB signal of an optical FSK modulated signal. A modulated signal is applied to a main Mach-Zehnder electrode (or an electrode C) (11) of a main Mach-Zehnder waveguide (MZc) (8) thereby to switch the USB signal and the LSB signal so that the FSK modulation can be made. In order to control the phase of the optical signal to be outputted from the main Mach-Zehnder waveguide (MZc) (8), a bias voltage is applied to the main Mach-Zehnder electrode (11) thereby to control the phases, as have not been considered in the prior art, of the USB signal and the LSB signal so that the FSK modulation having the arranged phases can be achieved.

公开(公告)号：EP3796573B1

公开(公告)日：2024-03-06

申请号：EP20198885.4

申请日：2017-01-24

发明人： ZHUGE, Qunbi ,  FARLEY, Kevin ,  ROBERTS, Kim ,  O'SULLIVAN, Maurice

IPC分类号： H04B10/079 ,  H04B10/556 ,  H04B10/588 ,  H04B10/61

公开(公告)号：EP3698490B1

公开(公告)日：2021-09-22

申请号：EP18793197.7

申请日：2018-10-18

发明人： FLINT, Ian ,  ALOM, Mohammed ,  HAXHA, Shyqyri

IPC分类号： H04B10/2507 ,  H04B10/588 ,  H04B10/2537

公开(公告)号：EP3002894B1

公开(公告)日：2018-04-04

申请号：EP15186431.1

申请日：2015-09-23

申请人： FUJITSU LIMITED

发明人： Nakashima, Hisao ,  Tanimura, Takahito ,  Akiyama, Yuichi

IPC分类号： H04B10/588 ,  H04B10/50

CPC分类号： H04B10/2507 ,  H04B10/50572 ,  H04B10/50575 ,  H04B10/541 ,  H04B10/588 ,  H04B2210/072

摘要： An optical transmitter includes: a mapper configured to generate an electric-field-information signal from transmission data; a training-signal-generation section configured to generate a training signal; a training-signal-insertion section configured to insert the training signal into the electric-field-information signal; a driver configured to generate a drive signal from the electric-field-information signal into which the training signal is inserted; a modulator configured to generate an optical-modulation signal based on the drive signal; an optical receiver configured to generate an intensity signal indicating intensity of the optical-modulation signal; a training-signal-extraction section configured to extract an intensity-training signal corresponding to the training signal, from the intensity signal; a coder configured to generate a coded-training signal by coding the intensity-training signal extracted by the training-signal-extraction section using the training signal generated by the training-signal-generation section; and a distortion detection section configured to detect waveform distortion of the optical-modulation signal, based on the coded-training signal.

公开(公告)号：EP2778771B1

公开(公告)日：2017-12-13

申请号：EP12834969.3

申请日：2012-09-28

申请人： Sumitomo Osaka Cement Co., Ltd.

发明人： SAKAI Takeshi ,  MURE Masahito ,  ICHIKAWA Junichiro

IPC分类号： G02F1/035 ,  H04B10/50 ,  H04B10/60 ,  H04B10/40 ,  H04B10/588 ,  H04B10/516 ,  H04B10/548 ,  H04B10/564

CPC分类号： H04B10/548 ,  H04B10/5053 ,  H04B10/5057 ,  H04B10/5165 ,  H04B10/564

摘要： It is possible to suppress carrier light with a simple configuration when modulating the carrier light to generate optical sideband components. An optical carrier-suppressed signal generator includes first splitting means used to split input carrier light into two light beams, an optical modulator which modulates one split carrier light beam and outputs light including optical sideband components, a phase modulator which phase-modulates another split carrier light beam, and second or third splitting means used to split the output light of the optical modulator into two light beams. The output light split by the second or third splitting means and the output light of the phase modulator are multiplexed to obtain the amplitude of the signal waveform of optical power, and the optical modulator is controlled such that the obtained value is minimized.

公开(公告)号：EP3208952A1

公开(公告)日：2017-08-23

申请号：EP17152918.3

申请日：2017-01-24

申请人： Ciena Corporation

发明人： ZHUGE, Qunbi ,  FARLEY, Kevin ,  ROBERTS, Kim ,  O'SULLIVAN, Maurice

IPC分类号： H04B10/079 ,  H04B10/556 ,  H04B10/588 ,  H04B10/61

摘要： A digital instruction (216) is generated regarding one or more electrical-to-optical conversion impairments induced at the transmitter (202) of an optical communication system (200). The digital instruction may be used by the transmitter to reduce the impairments. Alternatively, or additionally, the digital instruction may be used by the receiver (208) of the optical communication system to compensate for the impairments.

摘要翻译： 产生关于在光通信系统（200）的发射器（202）处感应的一个或多个电光转换损伤的数字指令（216）。 数字指令可以被发射器用来减少损伤。 可选地或另外地，数字指令可以由光通信系统的接收器（208）使用以补偿损伤。

公开(公告)号：EP1727301A4

公开(公告)日：2016-08-17

申请号：EP05721004

申请日：2005-03-17

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： YONENAGA KAZUSHIGE ,  YONEYAMA MIKIO ,  TOMIZAWA MASAHITO ,  HIRANO AKIRA ,  KUWAHARA SHOICHIRO ,  KATAOKA TOMOYOSHI ,  SANO AKIHIDE ,  FUNATSU GENTARO

IPC分类号： H04B10/40 ,  H04B10/50 ,  H04B10/07 ,  H04B10/516 ,  H04B10/524 ,  H04B10/54 ,  H04B10/556 ,  H04B10/58 ,  H04B10/588 ,  H04B10/60 ,  H04B10/61 ,  H04B10/66 ,  H04B10/67 ,  H04B10/69 ,  H04L27/227

CPC分类号： H04B10/58 ,  H04B10/5051 ,  H04B10/5055 ,  H04B10/50575 ,  H04B10/54 ,  H04B10/66

摘要： An optical transmission system is provided in which the optimum operating point of a Mach-Zehnder interferometer, matched to the optical frequency of the light source on the transmitting side, can be set. The optical receiver (2) has an infinitesimal-modulated signal component detection circuit (222), which uses the signal train output from a balanced detection circuit (221) to detect the infinitesimal-modulated signal component applied to the phase adjustment terminal (201) of an MZI (200) by an infinitesimal-modulated signal oscillation circuit (224); a synchronous detection circuit (223), which synchronously detects the infinitesimal-modulated signals output from the infinitesimal-modulated signal component detection circuit (222) and infinitesimal-modulated signal oscillation circuit (224) and detects the error signal component arising from the shift between the optical signal carrier frequency and the optical frequency characteristic of the MZI (200); and a controller (207), which outputs a control signal to adjust the phase difference between two split optical signals output from the MZI (200) so as to correct the shift amount.

公开(公告)号：EP2778771A4

公开(公告)日：2016-03-02

申请号：EP12834969

申请日：2012-09-28

申请人： SUMITOMO OSAKA CEMENT CO LTD

发明人： SAKAI TAKESHI ,  MURE MASAHITO ,  ICHIKAWA JUNICHIRO

IPC分类号： G02F1/035 ,  H04B10/40 ,  H04B10/50 ,  H04B10/516 ,  H04B10/548 ,  H04B10/564 ,  H04B10/588 ,  H04B10/60

CPC分类号： H04B10/548 ,  H04B10/5053 ,  H04B10/5057 ,  H04B10/5165 ,  H04B10/564

摘要： It is possible to suppress carrier light with a simple configuration when modulating the carrier light to generate optical sideband components. An optical carrier-suppressed signal generator includes first splitting means used to split input carrier light into two light beams, an optical modulator which modulates one split carrier light beam and outputs light including optical sideband components, a phase modulator which phase-modulates another split carrier light beam, and second or third splitting means used to split the output light of the optical modulator into two light beams. The output light split by the second or third splitting means and the output light of the phase modulator are multiplexed to obtain the amplitude of the signal waveform of optical power, and the optical modulator is controlled such that the obtained value is minimized.

摘要翻译： 调制载波时可以以简单的结构来抑制载波，产生光边带分量。 光载波抑制信号发生器包括用于将输入载波光分成两束的第一分离装置，调制一个分离载波光束并输出包括光边带分量的光的光调制器，相位调制器， 光束，以及用于将光学调制器的输出光分成两束光的第二或第三分离装置。 由第二或第三分离装置分离的输出光和相位调制器的输出光被多路复用以获得光功率的信号波形的幅度，并且控制光调制器使得所获得的值最小化。