Kratz, Quintos & Hanson, LLP
Optical transmitter, optical modulator module, and optical transmission system
An optical transmitter includes: a driving circuit that includes drivers each corresponding to a configuration bit of an input electrical data sequence; a MZ optical modulator that includes a first phase shifter provided in an arm and a second phase shifter provided in an arm; first capacitance elements that are electrically connected between the driving unit and the first phase shifter, each include an electric capacity weighted in response to a bit number of the configuration bit, and generate a first multilevel signal to be supplied to the first phase shifter; and second capacitance elements that are electrically connected between the driving circuit and the second phase shifter, each include an electric capacity weighted in response to a bit number of the configuration bit, and generate a second multilevel signal to be supplied to the second phase shifter.
FUJITSU LIMITED PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION
H H G H G
H04B H04B G02F H04B G02F
inventional inventional additional inventional inventional
Toshihiko Shinsuke Tatsuya
Mori Tanaka Usuki