日本电信电话公司(株)利用半导体光集成电路制成了未来超高速光通信系统用的采用光分时多次传送技术的100Gbit/s光信号用光脉冲图形发生器。这种光脉冲图形发生器是利用半导体锁模激光器把外部发生的20GHz的光脉冲群导入集成电路,再用分波器把光脉冲群均等地分配给5条光波导光路传播(参见图1)。在波导光路中,高速光调制器被聚集在中途。把各光脉冲群转换成 Nippon Telegraph and Telephone Corporation Co., Ltd. makes use of a semiconductor optical integrated circuit to make an optical pulse pattern generator for 100 Gbit / s optical signals using optical time division multiple transmission technology for future ultra-high speed optical communication systems. The optical pulse pattern generator uses a semiconductor mode-locked laser to introduce an externally generated 20-GHz optical pulse train into an integrated circuit and distributes the optical pulse train uniformly to five optical waveguide optical paths using a splitter (see FIG. 1) . In waveguide optical paths, high-speed optical modulators are collected halfway. Convert each light pulse group into