基本信息:
- 专利标题： Optical signal reception device for receiving DQPSK modulated signal
- 专利标题（中）：光信号接收用于接收DQPSK调制的信号装置
- 申请号：EP05025496.0 申请日：2005-11-23
- 公开(公告)号：EP1696587A3 公开(公告)日：2008-02-27
- 发明人： Katagiri, Toru, c/o Fujitsu Limited , Hoshida, Takeshi, c/o Fujitsu Limited , Takahara, Tomoo, c/o Fujitsu Limited , Nakamura, Kentaro, c/o Fujitsu Limited , Kuwata, Naoki, c/o Fujitsu Limited
- 申请人： FUJITSU LIMITED
- 申请人地址： 1-1, Kamikodanaka 4-chome, Nakahara-ku Kawasaki-shi, Kanagawa 211-8588 JP
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 当前专利权人地址： 1-1, Kamikodanaka 4-chome, Nakahara-ku Kawasaki-shi, Kanagawa 211-8588 JP
- 代理机构： HOFFMANN EITLE
- 优先权： JP2005054371 20050228; JP2005206467 20050715
- 主分类号： H04B10/158
- IPC分类号： H04B10/158 ; H04L27/22
摘要：
An optical signal reception device is disclosed that receives and demodulates an optical signal modulated by DQPSK and performs logical inversion and other controls to transit to the object reception state. The signal reception device includes a front end including a delay interferometer and an opto-electric conversion element that receive the DQPSK optical signal and convert it into an in-phase signal and an orthogonal signal, a clock regenerator that regenerates a clock signal based on the in-phase signal and the orthogonal signal, a multiplexer that multiplexes the in-phase signal and the orthogonal signal, a reception frame processing unit that detects frame synchronization based on the signal multiplexed by the multiplexer and de-maps the received frames, and a controller that, based on out-of-frame-synchronization information (LOF/OOF) from the reception frame processing unit, performs logical inversion control in the clock regenerator, multiplexing timing control in the multiplexer, and controls the delay interferometer in the front end so as to transit to the object reception state.
公开/授权文献:
IPC结构图谱:
| H | 电学 |
| --H04 | 电通信技术 |
| ----H04B | 传输 |
| ------H04B10/00 | 利用微粒辐射束、或无线电波以外的电磁波，例如光、红外线的传输系统 |
| --------H04B10/02 | .零部件 |
| ----------H04B10/14 | ..终端站 |
| ------------H04B10/142 | ...相干零差或外差的系统 |
| --------------H04B10/158 | ....接收器 |