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A simple and effective method for calculating the bending loss and phase enhancement of a bent planar waveguide
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-3401-1125
2005 (English)In: Fiber and integrated optics (Print), ISSN 0146-8030, E-ISSN 1096-4681, Vol. 24, no 1, 25-36 p.Article in journal (Refereed) Published
Abstract [en]

A simple and effective method is introduced to calculate the bending loss and phase enhancement of a bent planar waveguide. The wave field is represented in terms of Airy functions and an eigenvalue equation is derived by matching the boundary conditions and the radiation condition in the outer cladding layer. The complex propagation constant is obtained by solving the eigenvalue equation with the Newton-Raphson method, and the imaginary part of the propagation constant gives directly the bending loss of the bent waveguide. The results are compared with the previous experimental and numerical results and are shown to be highly accurate and effective. The phase enhancement due to the bending is also studied.

Place, publisher, year, edition, pages
2005. Vol. 24, no 1, 25-36 p.
Keyword [en]
bent planar waveguides, bending loss, wave propagation, leaky wave, integrated optics
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-37821DOI: 10.1080/01468030590887650ISI: 000226206900002ScopusID: 2-s2.0-13844254578OAI: diva2:435259
QC 20110817Available from: 2011-08-17 Created: 2011-08-17 Last updated: 2013-11-19Bibliographically approved

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He, Sailing
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