Twist-induced tuning in tapered fibre couplers

Birks, T.A. (1989) Twist-induced tuning in tapered fibre couplers Applied Optics, 28, (19), pp. 4226-4233. (doi:10.1364/AO.28.004226).


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The power-splitting ratio of fused tapered single-mode fiber couplers can be reversibly tuned by axial twisting without affecting loss. The twist-tuning behavior of a range of different tapered couplers is described. A simple expression for twist-tuning can be derived by representing the effects of twist by a change in the refractive index profile. Good agreement between this expression and experimental results is demonstrated. Repeated tuning over tens of thousands of cycles is found not to degrade coupler performance, and a number of practical applications, including a freely tunable tapered coupler, are described.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1364/AO.28.004226
ISSNs: 0003-6935 (print)
Related URLs:
ePrint ID: 78453
Date :
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Date Deposited: 11 Mar 2010
Last Modified: 18 Apr 2017 20:22
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