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Generalized dispersion properties of a four-layer thin-film waveguide

Generalized dispersion properties of a four-layer thin-film waveguide
Generalized dispersion properties of a four-layer thin-film waveguide
A general analytic expression is derived, which describes the dispersion properties of a four-layer thin-film optical waveguide. The formula describes the variation of the effective refractive index with respect to any physical parameter with which the refractive index of any layer or the thickness of the guiding layers may vary. Normalized parameters are used, and curves are presented which describe the contributions of the individual layers and waveguide geometry to the total dispersion. Uses of the formula are illustrated for the cases of temperature and wavelength dispersions. Results show that considerable control of the effective index of refraction is possible. Application to the control of chromatic dispersion in a thin-film Luneburg lens is also demonstrated.
0003-6935
833-841
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Lit, J.W.Y.
4239c549-f64c-414d-bf84-f96762b03e3a
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Lit, J.W.Y.
4239c549-f64c-414d-bf84-f96762b03e3a

Hewak, D.W. and Lit, J.W.Y. (1987) Generalized dispersion properties of a four-layer thin-film waveguide. Applied Optics, 26 (5), 833-841. (doi:10.1364/AO.26.000833).

Record type: Article

Abstract

A general analytic expression is derived, which describes the dispersion properties of a four-layer thin-film optical waveguide. The formula describes the variation of the effective refractive index with respect to any physical parameter with which the refractive index of any layer or the thickness of the guiding layers may vary. Normalized parameters are used, and curves are presented which describe the contributions of the individual layers and waveguide geometry to the total dispersion. Uses of the formula are illustrated for the cases of temperature and wavelength dispersions. Results show that considerable control of the effective index of refraction is possible. Application to the control of chromatic dispersion in a thin-film Luneburg lens is also demonstrated.

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Published date: 1987

Identifiers

Local EPrints ID: 440827
URI: http://eprints.soton.ac.uk/id/eprint/440827
ISSN: 0003-6935
PURE UUID: d3c29414-86f0-4c0e-b60e-faac72e01e6c
ORCID for D.W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

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Date deposited: 20 May 2020 16:31
Last modified: 30 Jun 2020 00:25

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