Title:
時分割多重信号光の分離装置、並びに、それを用いた光受信装置および光伝送システム
Document Type and Number:
Japanese Patent JP4047099
Kind Code:
B2
Abstract:
An object of the present invention is to provide a separating apparatus having a simple configuration, capable of time division separating time division multiplexed signal light directly and stably. To this end, the present invention is such that in an apparatus for separating signal light included in the time division multiplexed signal light on a time axis, by guiding N × B b/s time division multiplexed signal light obtained by time division multiplexing B b/s signal light at N multiplexing degrees to serially connected first and second optical gate sections, the first optical gate section comprises; an MZ optical modulator in which an optical transmission characteristic thereof with respect to a drive voltage is periodically changed, and a drive circuit that supplies to the MZ optical modulator a drive signal having a repetition frequency equal to a bit rate of the signal light, and having the voltage magnitude corresponding to a voltage difference of an n/2 period in the periodic optical transmission characteristic of the MZ optical modulator.
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Inventors:
Fumio Futami
Shigeki Watanabe
Shigeki Watanabe
Application Number:
JP2002238806A
Publication Date:
February 13, 2008
Filing Date:
August 20, 2002
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02F1/035; H04J14/08; G02F2/00; H04B10/29; H04B10/291; H04B10/40; H04B10/50; H04B10/516; H04B10/54; H04B10/58; H04B10/60; H04B10/61
Domestic Patent References:
| JP5206988A | ||||
| JP11072761A | ||||
| JP9214470A | ||||
| JP8204678A | ||||
| JP6061975A | ||||
| JP5014315A |
Other References:
Masahiko Jinno,49.6 Gb/s electrooptic demultiplexing using cascaded on/off gates,Photonics Technology Letters,米国,IEEE,1992年 6月,Vol. 4, No. 6,P. 641 - 644
Attorney, Agent or Firm:
Tomijio Sasashima