Title:
The control method of a light modulation device, an optical transmitter, and an optical modulator
Document Type and Number:
Japanese Patent JP6090022
Kind Code:
B2
Abstract:
An optical modulation apparatus includes an optical modulation unit that includes a plurality of ring optical modulators which are coupled in cascade to each other and the ring optical waveguides of which have round-trip lengths different from each other, and a controller that performs, for at least one of the ring optical modulators, first resonance wavelength adjustment control to adjust the resonance wavelength of the ring optical modulator to one input light wavelength, performs second resonance wavelength adjustment control to specify the ring optical modulator that exhibits a minimum current amount required for the adjustment of the resonance wavelength of the ring optical waveguide to the one input light wavelength from among the ring optical modulators and adjust the resonance wavelength of the specified ring optical modulator to the one input light wavelength, and performs modulation driving control for the specified ring optical modulator.
Inventors:
Akinori Hayakawa
Application Number:
JP2013149111A
Publication Date:
March 08, 2017
Filing Date:
July 18, 2013
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02F1/015; G02B6/12
Domestic Patent References:
| JP2013041138A | ||||
| JP2012198465A | ||||
| JP2013026543A |
Foreign References:
| US20120057866 |
Attorney, Agent or Firm:
Yu Sanada
Masahisa Yamamoto
Masahisa Yamamoto