Holographic Coupler For Fiber Optics

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Abstract
The analysis and demonstration of a holographic coupler for single-mode optical fibers and cables is discussed. The holographic coupler is composed of two holographic windows. The holographic window is rigidly attached to the cable end. The coupling between windows proceeds by means of plane waves. The tolerances for some of the critical coupler parameters are relaxed, namely transverse alignment. Precision work is restricted to the factory produc-tion, but of simple implementation. The result is a coupler with relatively undemanding assembly operations in the field.

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