Abstract

A new fiber coupling scheme using thermally over-expanded core(TOEC) fiber was proposed and demonstrated. In the coupling experiment between 1.3<TEX>${\mu}{\textrm}{m}$</TEX> FP-LD and the proposed TOEC fiber with a tapered hemispherical microlens. superior performances such as a long working distance, a high coupling efficiency, and large misalignment tolerances were verified experimentally.

© 1998 Optical Society of Korea

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