Abstract:

As the application of the highspeed optical switch is more and more popular in optical interconnection, the speed of the optical switch is directly related to the bit rate of the optical links. So the performance and integration requirement of driver circuit which drives the optical switch producing narrow optical pulse in a relative long cycle is more stringent. Depending on the breakthrough of singlechip optoelectrical integration and the advance of the optical pulse train generator technique, anoptoelectrical integration ps level optical pulse generator used in optical transceiver is proposed, which is based on optical serializer/deserialier (SerDes). The generator, made up of CMOS integration circuit, produces narrow optical pulses with a precisely adjustable width, which is used in the transceiver with optical SerDes. The generator outputs pulses as narrow as 25 ps width in SMIC 0.13 μm CMOS library, the power voltage range is in 1.4 V~2.5 V, and the clock frequency is from several KHz up to 4 GHz. In addition, the circuit is easy to be transplanted to different CMOS process platform.

Key words: ps;optical pulse;optical transceiver;optical switch