Abstract
Optical add/drop multiplexing (ADM) has allowed us to exploit modularity, scalability, and flexibility in wavelength-division multiplexed (WDM) networks. It, however, requires high-performance wavelength-selectable devices.1 A Mach-Zehnder interferometer with photo-induced Bragg gratings (M-Z grating filter)2 is promising device as a wavelength-selectable optical ADM circuit. The basic device has been successfully fabricated to demonstrate its low loss and high wavelength selectivity.3 The purpose of this study is to discuss the implementational aspects of the M-Z grating filters as optical ADM circuits. Effective ADM experiments of 6 × 10 Gbit/s are described with a solution for interference cross talk.
© 1996 Optical Society of America
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