Curvilinear optical fibre waveguide: characterization of bound modes and radiative field

Tsao, C.Y.H. and Gambling, W.A. (1989) Curvilinear optical fibre waveguide: characterization of bound modes and radiative field. Proceedings of The Royal Society A: Mathematical Physical and Engineering Sciences, 425, (1868), 1-16. (doi:10.1098/rspa.1989.0096).


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Optical waveguides have assumed major importance, not only in optoelectronic applications but also, quite recently, in a study of fundamental physical properties of materials. The propagation characteristics of linear optical waveguides, and to a lesser extent those of waveguides curved in a single plane, are well understood. However, optical waveguides having three-dimensional curvature, for example the helical waveguide, have been proposed and fabricated and an analysis of its properties is essential. In this paper the scalar wave equations for a three-dimensionally curved optical fibre are solved analytically and boundary conditions are applied to the curved core/cladding interface. An asymptotic formula for computing the propagation constant is proposed and the effects of curvilinearity on the characterization of the bound modes are discussed. By using the equivalent fictitious electromagnetic current method, the far radiative field is established and expressions for the radiation losses for various modes are derived

Item Type: Article
Digital Object Identifier (DOI): doi:10.1098/rspa.1989.0096
ISSNs: 1364-5021 (print)
1471-2946 (electronic)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 77516
Accepted Date and Publication Date:
Date Deposited: 11 Mar 2010
Last Modified: 31 Mar 2016 13:11

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