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    CALIBRATION OF PLUGGABLE OPTICAL MODULE
    2.
    发明授权
    CALIBRATION OF PLUGGABLE OPTICAL MODULE 有权

    公开(公告)号：EP3311509B1

    公开(公告)日：2018-12-12

    申请号：EP16729345.5

    申请日：2016-06-10

    申请人： Oclaro Technology Limited

    发明人： GRIFFIN, Robert

    IPC分类号： H04B10/50 ,  G02F1/225 ,  H04B10/588

    CPC分类号： H04B10/50572 ,  G02F1/21 ,  G02F1/225 ,  G02F2001/212 ,  H04B10/07955 ,  H04B10/5057 ,  H04B10/50575 ,  H04B10/564 ,  H04B10/588 ,  H04B2210/254

    摘要： An optical communications apparatus comprising a host (100) and an optical module (200) comprising a Mach-Zehnder modulator (202), MZM, wherein the optical module is removably connected to the host via a connection path, the optical communications apparatus comprising: a signal generator (101) at the host, configured to generate a plurality of calibration signals at a plurality of frequencies; a host interface (102) configured to transmit the calibration signals to the optical module via the connection path; a module interface (201) configured to receive the transmitted calibration signals; wherein the MZM is configured to use the calibration signals to modulate a laser light source (206) and biased to a point at which average output power is proportional to the output modulated signal; an optical detector configured to measure an average magnitude of an output of the MZM when each of the calibration signals is used to modulate the laser light source; one of a host calibration unit (103) and a module calibration unit (203), configured to determine a magnitude response of the connection path based on the measured average magnitudes and magnitudes of the respective calibration signals, and further configured to determine a pre-emphasis characteristic based on the magnitude response, the pre-emphasis characteristic for application to signals transmitted by the optical transmitter in use.

    CALIBRATION OF PLUGGABLE OPTICAL MODULE
    3.
    发明公开
    CALIBRATION OF PLUGGABLE OPTICAL MODULE 有权
    可插式光模块的校准

    公开(公告)号：EP3311509A1

    公开(公告)日：2018-04-25

    申请号：EP16729345.5

    申请日：2016-06-10

    申请人： Oclaro Technology Limited

    发明人： GRIFFIN, Robert

    IPC分类号： H04B10/50 ,  G02F1/225 ,  H04B10/588

    CPC分类号： H04B10/50572 ,  G02F1/21 ,  G02F1/225 ,  G02F2001/212 ,  H04B10/07955 ,  H04B10/5057 ,  H04B10/50575 ,  H04B10/564 ,  H04B10/588 ,  H04B2210/254

    摘要： An optical communications apparatus comprising a host (100) and an optical module (200) comprising a Mach-Zehnder modulator (202), MZM, wherein the optical module is removably connected to the host via a connection path, the optical communications apparatus comprising: a signal generator (101) at the host, configured to generate a plurality of calibration signals at a plurality of frequencies; a host interface (102) configured to transmit the calibration signals to the optical module via the connection path; a module interface (201) configured to receive the transmitted calibration signals; wherein the MZM is configured to use the calibration signals to modulate a laser light source (206) and biased to a point at which average output power is proportional to the output modulated signal; an optical detector configured to measure an average magnitude of an output of the MZM when each of the calibration signals is used to modulate the laser light source; one of a host calibration unit (103) and a module calibration unit (203), configured to determine a magnitude response of the connection path based on the measured average magnitudes and magnitudes of the respective calibration signals, and further configured to determine a pre-emphasis characteristic based on the magnitude response, the pre-emphasis characteristic for application to signals transmitted by the optical transmitter in use.

    OPTICAL TRANSMITTER AND WAVEFORM DISTORTION CORRECTION METHOD
    4.
    发明公开
    OPTICAL TRANSMITTER AND WAVEFORM DISTORTION CORRECTION METHOD 有权
    OPTISCHER SENDER UND WELLENFORMVERZERRUNGSKORREKTURVERFAHREN

    公开(公告)号：EP3002894A1

    公开(公告)日：2016-04-06

    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.

    摘要翻译： 光发射机包括：映射器，被配置为从传输数据生成电场信息信号; 训练信号生成部，被配置为生成训练信号; 训练信号插入部，被配置为将训练信号插入到电场信息信号中; 驱动器，被配置为从所述训练信号插入的电场信息信号生成驱动信号; 调制器，被配置为基于所述驱动信号产生光调制信号; 光接收器，被配置为产生指示所述光调制信号的强度的强度信号; 训练信号提取部，被配置为从所述强度信号中提取与所述训练信号对应的强度训练信号; 编码器，被配置为通过使用由训练信号生成部生成的训练信号对由训练信号提取部提取的强度训练信号进行编码来生成编码训练信号; 以及失真检测部，被配置为基于编码训练信号检测光调制信号的波形失真。

    OPTICAL TRANSMITTER
    9.
    发明公开
    OPTICAL TRANSMITTER 审中-公开
    光发送器

    公开(公告)号：EP2381592A4

    公开(公告)日：2017-01-04

    申请号：EP10731247

    申请日：2010-01-13

    申请人： MITSUBISHI ELECTRIC CORP

    发明人： SUGIHARA TAKASHI ,  KAMETANI SOICHIRO ,  MIZUOCHI TAKASHI ,  KONISHI YOSHIAKI

    IPC分类号： G02F1/01 ,  H04B10/516 ,  H04B10/50 ,  H04B10/54 ,  H04B10/548 ,  H04B10/556 ,  H04B10/588 ,  H04B10/60 ,  H04B10/61 ,  H04L27/36

    CPC分类号： H04L27/36 ,  H04B10/5053 ,  H04B10/5055 ,  H04B10/516

    摘要： Provided is an optical transmitter capable of lessening a processing load of multi-level modulation processing. The optical transmitter for converting an input data series which is an input electrical signal into an optical multi-level signal and for outputting the optical multi-level signal, includes: an LUT (2) in which data for executing optical multi-level modulation is stored and from which first modulation data and second modulation data are output based on the input data series; a DAC (5a) which converts the first modulation data by D/A conversion to generate a first multi-level signal; a DAC (5b) which converts the second modulation data by D/A conversion to generate a second multi-level signal; and a dual-electrode MZ modulator (8) which includes a first phase modulator (8a) for modulating light from a light source (7) in accordance with the first multi-level signal and a second phase modulator (8b) for modulating light from the light source in accordance with the second multi-level signal, and which combines an optical signal from the first phase modulator (8a) and an optical signal from the second phase modulator (8b) to output the optical multi-level signal.