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Proceedings Paper

Manufacturability Of 3X3 Single-Mode Fiber Optical Couplers
Author(s): B. Michael Kale
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Paper Abstract

A theoretical investigation of the manufacturing tolerances necessary to fabricate fused 3x3 single-mode fiber optical couplers with acceptable port-to-port uniformity in the coupling ratios is reported. Arbitrary coupler geometries are assumed, i.e. the core-to-core distances may all be the same or they may all differ. Thus, there may be one, two or three different coupling constants determining the behavior of the coupler. By using the three equations relating the fields in the three cores to one another and an approximate expression for the coupling constant, coupling ratios and uniformities can be determined for arbitrary coupler geometries. The manufacturing tolerances on core-to-core separation can be determined once the required coupling ratio and uniformity are known.

Paper Details

Date Published: 14 January 1987
PDF: 10 pages
Proc. SPIE 0722, Components for Fiber Optic Applications, (14 January 1987); doi: 10.1117/12.937642
Show Author Affiliations
B. Michael Kale, Sugarloaf Development (United States)

Published in SPIE Proceedings Vol. 0722:
Components for Fiber Optic Applications
Vincent J. Tekippe, Editor(s)

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