| 发明名称 |
OPTICAL TRANSMITTER AND METHOD FOR CONTROLLING BIAS OF OPTICAL MODULATOR |
| 摘要 |
An optical transmitter includes: a mapper that generates an electric field information signal from transmission data; a phase rotation circuit that adds a phase rotation to the electric field information signal; a driver that generates a driving signal from the electric field information signal to which the phase rotation is added; a modulator that generates a modulated optical signal according to the driving signal; and a controller that controls a bias of the modulator according to a change in a carrier frequency of the modulated optical signal corresponding to the phase rotation that is added to the electric field information signal by the phase rotation circuit. |
| 申请公布号 |
US2016036533(A1) |
申请公布日期 |
2016.02.04 |
| 申请号 |
US201514738234 |
申请日期 |
2015.06.12 |
| 申请人 |
FUJITSU LIMITED |
发明人 |
Nakashima Hisao;Hoshida Takeshi;AKIYAMA YUICHI |
| 分类号 |
H04B10/556 |
主分类号 |
H04B10/556 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical transmitter comprising:
a mapper that generates an electric field information signal from transmission data; a phase rotation circuit that adds a phase rotation to the electric field information signal; a driver that generates a driving signal from the electric field information signal to which the phase rotation is added; a modulator that generates a modulated optical signal according to the driving signal; and a controller that controls a bias of the modulator according to a change in a carrier frequency of the modulated optical signal corresponding to the phase rotation that is added to the electric field information signal by the phase rotation circuit. |
| 地址 |
Kawasaki-shi JP |
