发明申请
- 专利标题: Optical receiving apparatus and method for controlling the optical receiving apparatus
- 专利标题(中): 光接收装置及其控制方法
-
申请号: US11301325申请日: 2005-12-13
-
公开(公告)号: US20070047964A1公开(公告)日: 2007-03-01
- 发明人: Hiroki Ooi , Akira Miura , Takeshi Hoshida
- 申请人: Hiroki Ooi , Akira Miura , Takeshi Hoshida
- 专利权人: FUJITSU LIMITED
- 当前专利权人: FUJITSU LIMITED
- 优先权: JP2005-246697 20050826
- 主分类号: H04B10/12
- IPC分类号: H04B10/12
摘要:
An optical receiving apparatus sets, efficiently and optimally, a delay interferometer and a variable wavelength dispersion compensator in the apparatus. The apparatus has a variable dispersion compensation unit performing variably dispersion compensation on a received optical signal, a delay interference unit performing a delay interference process on the optical signal from the variable dispersion compensation unit, a photoelectric conversion detecting unit performing photoelectric conversion detection on the optical signal from the delay interference unit and outputting an electric signal demodulated from the differential M-ary phase modulated optical signal, a clock signal extracting unit extracting a clock signal from the demodulated electric signal fed from the photoelectric conversion detecting unit, and a dispersion compensation controlling unit controlling a dispersion compensation amount in the variable dispersion compensation unit on the basis of the clock signal extracted by the clock signal extracting unit.