| 发明名称 |
OPTICAL MULTILEVEL TRANSMITTER AND OPTICAL TRANSPONDER |
| 摘要 |
An optical multilevel transmitter includes a semiconductor quadrature optical modulator configured to separately modulate and output in-phase and quadrature electric field components and a semiconductor nonlinear characteristic compensation circuit configured to generate, from in-phase and quadrature drive signals to be inputted to the semiconductor quadrature optical modulator, two signals for correcting each other and to add the two correcting signals to the corresponding drive signals. |
| 申请公布号 |
US2015117869(A1) |
申请公布日期 |
2015.04.30 |
| 申请号 |
US201414530571 |
申请日期 |
2014.10.31 |
| 申请人 |
Hitachi, Ltd. |
发明人 |
WAKAYAMA Yuki;KIKUCHI Nobuhiko |
| 分类号 |
H04B10/516 |
主分类号 |
H04B10/516 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical multilevel transmitter comprising:
a semiconductor quadrature optical modulator configured to separately modulate and output in-phase and quadrature electric field components; and a semiconductor nonlinear characteristic compensation circuit configured to generate, from in-phase and quadrature drive signals to be inputted to the semiconductor quadrature optical modulator, two compensation signals for each other and to add the two correcting signals to the corresponding drive signals. |
| 地址 |
Tokyo JP |
