Abstract

Increasing demands for high-bit-rate transmission technologies enabling interactive multimedia era reach to establishing the global information infrastructure based upon optical tera-bit/s telecommunication network.¹⁾ The optical network, which fully utilizes optical bandwidth of fiber, will exploit the functionality offered not only by TDM(Time Division Multiplexing) but also by WDM(Wavelength Division Multiplexing) technologies. The optical high-bit-rate(TDM) and WDM transmission technologies accompanied by the optical node²⁾ technologies such as WDM-ADM(Add/Drop Multiplexer) and WDM-OXC(Optical Crossconnect) require the even more functional optoelectronic devices. Semiconductor based optical devices is becoming more and more of a requirement as key devices, in terms of the advanced functionality, such as high- speed modulators over 10Gb/s, compact optical amplifiers, matrix space switches, wavelength converters, and so on.

© 1997 Optical Society of America