Low-Loss Optical Multi/Demultiplexer Compatible with Single-Mode Optical Fibers

Masayuki OKUNO

IEICE TRANSACTIONS (1976-1990)   Vol.E72    No.6    pp.736-741
Publication Date: 1989/06/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Electro-Optics

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A low-loss and high-crosstalk-attenuation two-channel optical multi/demultiplexer for single-mode fiber systems is fabricated. This device is composed of new waveguides compatible with optical fibers (WCF) and interference filters. The waveguides are fabricated by the same method as used for optical fibers. The device has a low insertion loss of less than 2.3 dB, and high far-end and near-end crosstalk attenuations of over 54 dB and 68 dB. Coupling loss between the device and single-mode fibers is measured at less than 0.12 dB. Polarization dependence is not observed in the device.