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Conferences > OFC > 1990 > WM > WM3

Narrowband directional couplers made of dissimilar single-mode fibers with different cladding refractive indices

OTTOKAR LEMINGER and REMIGIUS ZENGERLE

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Abstract

Frequency selective directional couplers consisting of two polished single-mode fibers can be fabricated as low loss components applicable to wavelength division multiplexing in optical transmission systems. Symmetrical couplers made of two identical fibers are well known.1 To obtain narrow channel spacings, long interaction lengths are necessary and the alignment tolerances become very stringent. The best published values for the 3-dB bandwidth of the measured power transfer characteristics (PTCs) are ~40 nm.

© 1990 Optical Society of America

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