发明名称 |
Optical transmitter and method for controlling the same |
摘要 |
Since it is difficult to emit a stable and reliable modulated lightwave signal by means of IQ modulators used for QAM format, a method for controlling an optical transmitter according to an exemplary aspect of the invention includes the steps of (a) keeping an optical amplitude of a continuous wave light output from the optical transmitter constant, (b) making operating point values in optical modulation converge to predetermined values during step (a), and (c) modulating the continuous wave light with multiple amplitudes and phase levels around the operating point values converged in step (b). |
申请公布号 |
US9166697(B2) |
申请公布日期 |
2015.10.20 |
申请号 |
US201114112119 |
申请日期 |
2011.04.19 |
申请人 |
NEC CORPORATION |
发明人 |
Le Taillandier de Gabory Emmanuel;Fujita Sadao;Fukuchi Kiyoshi |
分类号 |
H04B10/04;H04B10/54;G02F1/01;H04B10/50 |
主分类号 |
H04B10/04 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method for controlling an optical transmitter, comprising the steps of:
(a) keeping an optical amplitude of a continuous wave light during optical modulation constant; (b) making operating point values in the optical modulation converge to predetermined values during step (a); and (c) modulating the continuous wave light with multiple amplitudes and phase levels around the operating point values converged in step (b). |
地址 |
Tokyo JP |