Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kaoru Higuma0
Toshio Sakane0
Date of Patent
August 10, 2010
0Patent Application Number
122975580
Date Filed
April 19, 2007
0Patent Primary Examiner
Patent abstract
Light having components of frequencies f0, f+1 and f−1 outputted from an optical modulator (10) is monitored, a second light detection means (14b) measures the power P2 of all the components, and a first light detection means (14a) measures the power P1 with frequency f0 component cut out by a filter means (13). Based on these light receiving powers (P1) and (P2), phase differences imparted by the respective DC electrodes of Mach-Zehnder optical waveguides (MZ-A, MZ-B, MZ-C) of the optical modulator (10) are controlled. The control is performed to minimize the light receiving power (P1) and to maximize the light receiving power (P2).
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
