Analysis of single-mode fused tapered fibre couplers
Analysis of single-mode fused tapered fibre couplers
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
221-28
de Fornel, F.
365a4587-1235-43db-ba22-3ac713e37155
Ragdale, C.M.
fd1dac1c-ae44-4f32-8d55-366799ddef3c
Mears, R.J.
779444aa-8a7d-4e5a-9d92-f65635db8818
August 1984
de Fornel, F.
365a4587-1235-43db-ba22-3ac713e37155
Ragdale, C.M.
fd1dac1c-ae44-4f32-8d55-366799ddef3c
Mears, R.J.
779444aa-8a7d-4e5a-9d92-f65635db8818
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), .
(doi:10.1049/ip-h-1.1984.0046).
Abstract
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
More information
Published date: August 1984
Identifiers
Local EPrints ID: 77687
URI: http://eprints.soton.ac.uk/id/eprint/77687
ISSN: 0950-107X
PURE UUID: 2cd84b60-f382-42ad-a23e-9a83c9305ed0
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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:57
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Author:
F. de Fornel
Author:
C.M. Ragdale
Author:
R.J. Mears
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