Title:
OPTICAL TRANSMITTER AND OPTICAL TRANSMITTER CONTROL METHOD
Document Type and Number:
Japanese Patent JP3447664
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a stable optical transmitter that is highly immune to dispersion in a group velocity of an optical fiber and that hardly deteriorates in the receiving sensitivity and may not be affected by the dispersion in the group velocity for the extension of the network scale.
SOLUTION: The optical transmitter consists of a light source section that generates an optical clock pulse synchronously with a signal bit rate at a prescribed duty ratio and that variably sets the duty ratio of the optical clock pulse and a coding section that sets a relative optical phase difference between optical clock pulses in adjacent time slots to an odd number multiple of πin order to encode the optical clock pulse by an electric signal in synchronism with the optical clock pulse.
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Inventors:
Akira Hirano
Kazushige Yonenaga
Hiroshi Miyamoto
Kenji Sato
Masao Yube
Kazushige Yonenaga
Hiroshi Miyamoto
Kenji Sato
Masao Yube
Application Number:
JP2000170944A
Publication Date:
September 16, 2003
Filing Date:
June 07, 2000
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G02F1/03; G02F1/035; H04B10/07; H04B10/2507; H04B10/2513; H04B10/516; H04B10/61; H04J14/08; H04L25/02; H04L25/03; (IPC1-7): H04B10/02; G02F1/03; G02F1/035; H04B10/04; H04B10/06; H04B10/142; H04B10/152; H04B10/18; H04J14/08; H04L25/02; H04L25/03
Domestic Patent References:
| JP1079705A | ||||
| JP9261207A | ||||
| JP10178397A |
Other References:
平野章 他，デューティ比と光位相制御による高分散耐力８０Ｇｂｉｔ／ｓ光時分割多重方式，１９９９年電子情報通信学会通信ソサイエティ大会講演論文集２，日本，社団法人電子情報通信学会，１９９９年 ８月１９日，Ｂ−１０−５５，ｐ．２３２
Attorney, Agent or Firm:
Hidekazu Miyoshi (1 outside)