Abstract

Telecommunication systems and fiber-optic data buses that employ wavelength diversity to isolate and distribute information traffic will require low-loss, in-line wavelength-division multiplexing (WDM) components. These include bidirectional broad- and narrow-band taps, launchers, and one-to-many splitters. Fiber Bragg gratings (FBG’s) formed in the core by a noninvasive holographic technique¹ offer a new and promising approach for providing these device capabilities. This paper describes the design and measured performance of bidirectional wavelength-selective taps. Out-coupling efficiencies as high as 21% have been realized at 488 and 514.5 nm. Similar performance is expected at wavelengths in the standard telecommunication bands because FBG reflection filters have been written at 830 and 1500 nm.2

© 1991 Optical Society of America