Optical modulation device and optical modulation method
AssigneeFujitsu Limited
InventorsToshiki Tanaka, Hideyuki Miyata, Yuichi Akiyama, Takeshi Hoshida
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Abstract
According to an aspect of an embodiment, an optical modulation device includes a Mach-Zehnder modulator and a controller. The Mach-Zehnder modulator is supplied a drive signal and a bias voltage. The Mach-Zehnder modulator modulates inputted light on the bases of the drive signal and the bias voltage. The drive signal selectively is superimposes a predetermined frequency signal. The bias voltage selectively is superimposes the predetermined frequency signal. The controller selects a superimposing target which is the drive signal or the bias voltage so as to change modulation formats.
Claims8
A method for modulating an inputted light with a Mach-Zehnder modulator, the method comprising:
- supplying a drive signal to the Mach-Zehnder modulator;
- supplying a bias signal to the Mach-Zehnder modulator;
- modulating the inputted light with the Mach-Zehnder modulator based on the drive signal and the bias signal;
- receiving an input designating a modulation format;
- and
- controlling the drive signal in accordance with the input.
A method for modulating an inputted light with a Mach-Zehnder modulator, the method comprising:
- supplying a drive signal to the Mach-Zehnder modulator;
- supplying a bias signal to the Mach-Zehnder modulator;
- modulating the inputted light with the Mach-Zehnder modulator based on the drive signal and the bias signal;
- receiving an input designating a modulation format;
- and
- controlling the bias signal in accordance with the input.
Dependencies are inferred from the claim text.