公开(公告)号：EP2533434A1

公开(公告)日：2012-12-12

申请号：EP10844621.2

申请日：2010-02-01

申请人： Sumitomo Osaka Cement Co., Ltd.

发明人： MURE Masahito ,  HIGUMA Kaoru ,  KATAOKA Toshio ,  MIYAZAKI Norikazu ,  MIYACHI Masahide ,  OIKAWA Youichi ,  SHIGA Noriyasu ,  NAGAEDA Hiroshi

IPC分类号： H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/142 ,  H04B10/152 ,  H04B10/26 ,  H04B10/28

CPC分类号： H04B10/677

摘要： An optical receiver includes interference means 2 for branching the optical signal modulated in a DQPSK manner into two light beams, delaying at least one branched light beam so that two branched light beams have a predetermined phase difference, rotating the polarization plane of at least one branched light beam so that the polarization planes of the two branched light beams are orthogonal to each other, and coupling the two branched light beams, light separation adjusting means 3 to 5 for separating the output light beam from the interference means and adjusting the polarization planes of the separated light beams, and detection means 6 and 6' for detecting light intensities of the separated light beams output from the light separation adjusting means, wherein an I-component signal and a Q-component signal are generated on the basis of detection signals from the detection means.

摘要翻译： 光接收机包括：干扰装置2，用于将以DQPSK方式调制的光信号分支成两个光束，延迟至少一个分支光束，使得两个分支光束具有预定的相位差，旋转至少一个分支的偏振面 光束使得两个分支光束的偏振平面彼此正交，并且耦合两个分支光束，光分离调节装置3至5，用于将输出光束与干涉装置分离并调节偏振面 分离的光束，以及用于检测从光分离调节装置输出的分离的光束的光强度的检测装置6和6'，其中产生I分量信号和Q分量信号， 检测装置。