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Analysis of single-mode fused tapered fibre couplers

de Fornel, F., Ragdale, C.M. and Mears, R.J. (1984) Analysis of single-mode fused tapered fibre couplers IEE Proceedings H Microwaves Antennas and Propagation, 131, (4), pp. 221-28.

Record type: Article


A fabrication technique for fused taper couplers is described. Coupling coefficients are calculated for fibres with raised, depressed and matched refractive-index profiles, and optimum V-values for coupling are found. These suggest a shorter coupler geometry differing from the biconical taper. The high taper loss in depressed cladding fibres is shown to correspond to the presence of the leaky LP-mode. The wavelength response has been measured for various couplers and fitted theoretically. Coupling periods as small as 12 nm demonstrate potential use for couplers as wavelength-division multiplexers. The dependence of coupling on the refractive index of the surrounding medium has been measured. Thus couplers have also demonstrated potential as temperature sensors and optical switches

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Published date: August 1984


Local EPrints ID: 77687
ISSN: 0950-107X
PURE UUID: 2cd84b60-f382-42ad-a23e-9a83c9305ed0

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:30

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Author: F. de Fornel
Author: C.M. Ragdale
Author: R.J. Mears

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