CHAPTER 14

Side-Polished Evanescently Coupled Optical Fiber Overlay Devices: A Review

Walter Johnstone*,     Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, Scotland

1 INTRODUCTION

Access to the evanescent field of an optical fiber can yield a number of useful optical functions involving coupling of the field to structures formed directly on the fiber. In such devices the fiber remains continuous, obviating the need for expensive fiber-to-device interfacing with its requirements for high precision alignment. Continuous fiber devices offer advantages of intrinsically low insertion loss, low back reflections, and excellent mechanical stability relative to their micro-optic or integrated optic counterparts ...

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