The coupling of light-emitting diodes to optical fibers using sphere lenses
- 1 August 1975
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 46 (8), 3468-3474
- https://doi.org/10.1063/1.322072
Abstract
The use of a truncated sphere of high‐refractive‐index material is proposed as a lens designed to improve the coupling efficiency between a light‐emitting‐diode source and an optical fiber. A method of calculating the coupling efficiency for such lens systems is described. Numerical results for the variation of efficiency with lens parameters are presented and discussed for coupling to a fiber bundle with a numerical aperture of 0.14. Improvements of two orders of magnitude in the coupling efficiency over that attainable with the close coupling geometry are predicted.Keywords
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