Abstract

Planar lightwave circuits (PLCs) provide various important devices for optical wavelength division multiplexing (WDM), time division multiplexing (TDM) systems, subscriber networks and etc. This paper reviews the recent progress and future prospects of PLC technologies including arrayed-waveguide grating (AWG) wavelength filters, optical add/drop multiplexers (ADM), strictly non-blocking matrix switches, programmable dispersion equalizers and hybrid optoelectronics integration technologies.

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