In this paper, we review our recent works in 100 Gb/s signal generation and processing. A high-speed 100 Gb/s system with on-off keying （0OK） modulation format is implemented by using optical time division multiplexing （OTDM） method. As modifications of this system, simultaneous multicolor optical signal generation and 100Gb/s return-to-zero （RZ）-to-non-return-to-zero （NRZ） format conversion are presented. We also demonstrate basic all-optical signal processing functions of 100 GHz clock recovery and 100 Gb/s all-optical 2R generation based on semiconductor optical amplifiers （SOAs）.
