Mode conversion coefficients in optical fibers
- 1 July 1975
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 14 (7) , 1538-1542
- https://doi.org/10.1364/ao.14.001538
Abstract
A simple method has been devised for the experimental determination of mode conversion coefficients in multimode fibers and involves only the observation of the far-field output as the angle of incidence of a collimated input beam is changed. The normalized mode coupling coefficient in a liquid-core fiber is D = 3 × 10−6 rad2 m−1 and increases by as much as a factor of 10 when transverse pressure is applied. Values some 2 orders of magnitude larger are found in glass-core fibers. There is good agreement between the theory presented and experiment.Keywords
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