State;
Key;
Laboratory;
on;
Integrated;
Optoelectronics/Tsinghua;
National;
Laboratory;
for;
Information;
Science;
and;
Technology,;
Department;
of;
Electronic;
Engineering,;
Tsinghua;
University,;
Beijing;
100084,;
China;
相移键控; 干涉仪; 延迟线; 信号系统; 监测; 应用; 信号调制; 信号解调;