Antireflection-coated angled facet design
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- Author(s): M. Reed 1 ; T.M. Benson 1 ; P.C. Kendall 2 ; P. Sewell 1
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Affiliations:
1:
Department of Electrical and Electronic Engineering,
University of Nottingham
, Nottingham
, United Kingdom
2: Department of Electronic and Electrical Engineering, University of Sheffield , Sheffield , United Kingdom
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Affiliations:
1:
Department of Electrical and Electronic Engineering,
University of Nottingham
, Nottingham
, United Kingdom
- Source: IEE Proceedings - Optoelectronics, Volume 143, Issue 4, August 1996, p. 214 – 220, DOI: 10.1049/ip-opt:19960597, Print ISSN 1350-2433, Online ISSN 1359-7078
Abstract
New and accurate semianalytical expressions, based on the free-space radiation mode method, are derived for the reflectivity of a polarised guided mode of a slab waveguide incident on a multicoated laser facet at an arbitrary angle. Solutions may be obtained simply and with minimum computational effort. Results presented confirm that the coated angled facet can reduce the guided-mode reflectivity to near zero for both polarisations. The far-field radiation pattern is also significantly modified by angling the waveguide to the facet.
Inspec keywords: light polarisation; optical films; antireflection coatings; laser accessories; semiconductor lasers; optical waveguide theory; reflectivity; optical design techniques
Other keywords: polarisations; guided-mode reflectivity; polarised guided mode; coated angled facet; minimum computational effort; accurate semianalytical expression; slab waveguide; multicoated laser facet; antireflection-coated angled facet design; arbitrary angle; reflectivity; far-field radiation pattern; free-space radiation mode method
Subjects: Optical coatings and filters; Optical lens and mirror design; Semiconductor lasers; Laser accessories and instrumentation; Optical waveguides; Lasing action in semiconductors; Optical coatings; Waveguide and cavity theory; Optical waveguides and couplers
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