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Proceedings Paper

N optical fiber coupler based on a polyhedral gradient index lens
Author(s): Yuanhong Yang; Wen Dai; Kuiyan Song; Wei Jin
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Paper Abstract

A method for building a 1×N fiber coupler based on a single polyhedral gradient-index lens (p-GRIN) is proposed. One end of the p-GRIN has polyhedral convex cone shape with N surfaces and is used as the light input port, while the other end is flat and used as the output port. When light from a single mode optical fiber illuminates the input end of the p- GRIN, N spatially separated light beams are generated at the output end and coupled respectively into N different output fibers. Results obtained from ray-tracing agree well with simulation results from the ZEMAX software. The output beam positions and light coupling efficiency to optical fibers could be optimized by adjusting the input cone angle and the distance between input fiber end and cone tip. This method may be adapted for any type of optical fibers and provide a practical solution for light coupling between single- and multi-core fibers.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157AF (2 June 2014); doi: 10.1117/12.2058764
Show Author Affiliations
Yuanhong Yang, BeiHang Univ. (China)
Wen Dai, BeiHang Univ. (China)
Kuiyan Song, BeiHang Univ. (China)
Wei Jin, BeiHang Univ. (China)
The Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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