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Filter-embedded design and its applications to passive components

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4 Author(s)
H. Yanagawa ; Furukawa Electr. Co. Ltd., Chiba, Japan ; T. Ochiai ; H. Hayakawa ; H. Miyazawa

A design in which a filter is embedded in a fiber fixed on a substrate is proposed. It was successfully applied to the fabrication of low loss fiber optic components for a single-mode fiber transmission system. These components have a wide operational temperature range. The design is easily adapted to a multifilter or multifiber component. Filter embedding is achieved in two ways. One is to insert a thin filter chip in a slit which is machined into a fiber fixed on a substrate by a dicing saw (filter inserted type). The other is to evaporate a filter film directly on a fiber end face and butt this fiber to another fiber on a guide groove on a substrate (filter evaporated type)

Published in:

Journal of Lightwave Technology  (Volume:7 ,  Issue: 11 )