Study on Ultra-wideband Measurements of Optical Electric Fields for Optical Fiber Communications

光纤通信光电场超宽带测量研究

• 批准号: 22656090
• 负责人: KIKUCHI Kazuro
• 金额: $ 2.24万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22656090/
• 关键词: 計測機器; 情報通信工学; 先端的通信; フォトニックネットワーク

We have studied the method for measuring the optical electric field of single-channel 10-Gsymbol/s QPSK signals, where we first obtain spectral amplitudes and phases by separating the signal bandwidth and then reconstruct them in the time domain.We measure signal complex amplitudes within the separated bandwidths in parallel using two phase-diversity homodyne receivers, where two LOs are phase-locked. Next, these temporal waveforms are converted into the frequency domain, where two spectral waveforms are continuously connected. Then, such signal is successfully converted into the time domain and the QPSK signal is reconstructed. Waveform distortion of the reconstructed signal is generated from insufficient filtering characteristics, but can be compensated for by using signal equalization techniques.

本文研究了单通道10-Gsymbol/s QPSK信号的光电场测量方法，首先通过对信号带宽进行分离得到频谱幅值和相位，然后在时域进行重构。我们使用两个相分集差差接收器并行测量分离带宽内的信号复幅，其中两个LOs是锁相的。接下来，将这些时间波形转换为频域，其中两个频谱波形连续连接。然后，将该信号成功转换到时域，重构出QPSK信号。重构信号的波形失真是由于滤波特性不足而产生的，但可以通过使用信号均衡技术进行补偿。

项目成果

ディジタルコヒーレント受信器におけるカー効果の補償技術

数字相干接收机中的克尔效应补偿技术

• 发表时间: 2012
• 作者: 森洋二郎;菊池和朗
• 通讯作者: 菊池和朗

Ultrafast digital coherent receiver based on parallel processing of decomposed frequency subbands

基于分解频率子带并行处理的超快数字相干接收机

• 发表时间: 2010
• 作者: Y.Igarashi;M.Shirane;Y.Ota;et al;張超
• 通讯作者: 張超