Title:
PHASE ADJUSTMENT CIRCUIT, OPTICAL TRANSMISSION DEVICE, AND PHASE ADJUSTMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2013/031786
Kind Code:
A1
Abstract:
A phase adjustment circuit according to the present invention is provided with: an intensity modulation means which modulates the intensity of the input light on the basis of a control signal and outputs intensity-modulated light; a DP-QPSK modulation means which performs DP-QPSK modulation of the output intensity-modulated light and outputs DP-QPSK-modulated light; and a control means which monitors optical intensity of the output DP-QPSK-modulated light and generates and outputs the control signal so that the optical intensity is maximized.
Inventors:
ABE RYOTA (JP)
SUZUKI KOUICHI (JP)
SUZUKI KOUICHI (JP)
Application Number:
PCT/JP2012/071743
Publication Date:
March 07, 2013
Filing Date:
August 22, 2012
Export Citation:
Assignee:
NEC CORP (JP)
ABE RYOTA (JP)
SUZUKI KOUICHI (JP)
ABE RYOTA (JP)
SUZUKI KOUICHI (JP)
International Classes:
G02F1/01
Domestic Patent References:
| WO2011101919A1 | 2011-08-25 |
Foreign References:
| JP2010057106A | 2010-03-11 | |||
| JP2009027517A | 2009-02-05 | |||
| JP2009272694A | 2009-11-19 | |||
| JP2010243953A | 2010-10-28 | |||
| US20110019994A1 | 2011-01-27 |
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
Naoki Shimosaka (JP)
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Claims: