Side-Polished Evanescently Coupled Optical Fiber Overlay Devices: A Review
Walter Johnstone*, Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, Scotland
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 ...