Title:
光送信機
Document Type and Number:
Japanese Patent JP5484556
Kind Code:
B2
Abstract:
An optical transmitter includes: a data generating unit (6) configured to generate a plurality of modulating signals; a driver (9) configured to amplify the plurality of modulating signals generated by the data generating unit (6); a phase shifter (7) configured to control a phase of at least one signal among the plurality of modulating signals to be input to the driver (9); a plurality of optical modulators (2) connected in series to each other, and configured to modulate an optical signal on a basis of each of the modulating signals amplified by the driver (9); an optical coupler (3) configured to branch the optical signal modulated by the optical modulator (2) arranged at a last stage in the series; a photodiode (4) configured to detect the optical signal branched by the optical coupler (2) and converts the optical signal into an electric signal; and a phase control unit (5a) configured to control an amount of phase control of the phase shifter (7) to maximize an intensity of the electric signal converted by the photodiode (4).
Inventors:
Shusaku Hayashi
Yasuhisa Shimakura
Kazushige Sawada
Yasuhisa Shimakura
Kazushige Sawada
Application Number:
JP2012500397A
Publication Date:
May 07, 2014
Filing Date:
February 22, 2010
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04B10/516; G02F1/01; H04B10/50
Domestic Patent References:
| JP2009027517A | 2009-02-05 | |||
| JPH10336154A | 1998-12-18 | |||
| JP2007158415A | 2007-06-21 | |||
| JP2009033658A | 2009-02-12 |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Kume Teruyo
Hideo Kawamura
Hamada Hatsune
Kume Teruyo
Hideo Kawamura
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