Abstract

We present a coupled-mode theory of fiber-optic add–drop filters, which involve directional coupling between two fibers combined with fiber Bragg gratings defined inside the coupling region. The analysis self-consistently accounts for both the directional and the reflection coupling, and the propagation constants and structure of the supermodes of the combined structure are derived. We present a detailed analysis of a filter design based on identical fibers. The calculated device parameters satisfy the requirements for dense wavelength-division multiplexing applications.

© 1997 Optical Society of America

Promising compact wavelength-tunable optical add–drop multiplexer in dense wavelength-division multiplexing systems

Yinian Zhu, Ping Shum, Chao Lu, Pieter L. Swart, Beatrys M. Lacquet, and Stephanus J. Spammer
Opt. Lett. 29(7) 682-684 (2004)

All-fiber zero-insertion-loss add–drop filter for wavelength-division multiplexing

Anthony S. Kewitsch, George A. Rakuljic, Phil A. Willems, and Amnon Yariv
Opt. Lett. 23(2) 106-108 (1998)

Fiber Bragg grating as an optical filter tuned by a magnetic field

J. L. Arce-Diego, R. López-Ruisánchez, J. M. López-Higuera, and M. A. Muriel
Opt. Lett. 22(9) 603-605 (1997)

Ring fiber resonators based on fused-fiber grating add–drop filters: application to resonator coupling

John M. Choi, Reginald K. Lee, and Amnon Yariv
Opt. Lett. 27(18) 1598-1600 (2002)

Optimized grating-frustrated coupler

Ararat Yesayan and Réal Vallée
Opt. Lett. 26(17) 1329-1331 (2001)