Title:
干渉計、復調器及び光通信モジュール
Document Type and Number:
Japanese Patent JP5530205
Kind Code:
B2
Abstract:
When designing a demodulator for a DPSK-modulated signal, it is required that optical phase modulation is performed fast and the demodulator has a long lifetime. To achieve this object, a delay line interferometer inside the demodulator performs adjustment of phase difference between two split lights caused to interfere, using a first optical phase modulation unit such as a Piezo actuator and a second optical phase modulation unit such as a heating element that operates slower in modulation speed than the first optical phase modulation unit and is slower in deterioration speed.
Inventors:
Shuji Mikami
Taichi Kogure
Taichi Kogure
Application Number:
JP2010019875A
Publication Date:
June 25, 2014
Filing Date:
February 01, 2010
Export Citation:
Assignee:
Japan Oclaro Co., Ltd.
International Classes:
G02B26/00; G02F1/01; G02F1/061; G02F2/00; H04B10/516; H04B10/548; H04B10/61
Domestic Patent References:
| JP2008153900A | ||||
| JP2002221630A |
Attorney, Agent or Firm:
Haruka International Patent Office