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Title: Derivative free method for computing modes of multilayer planar waveguide
Authors: Semwal G.
Rastogi, Vipul K.
Published in: Optical and Quantum Electronics
Abstract: A technique to solve generalized dispersion equation of multilayer planar waveguide has been demonstrated to obtain all the expected guided modes. The solution is based on the derivative free method for computing the zeros of an analytical function in complex plane. The derivative free method extracts the roots which are very close to actual zeros of the function. Roots are further refined using the robust iteration method to achieve the desired accuracy. Application of the proposed method has been verified by solving the modes of a variety of structures including lossless structure, leaky structure, quantum well waveguide, active waveguide, ARROW waveguide and metal clad waveguide. The method is efficient and computes all modes of planar waveguide with high accuracy. © 2013 Springer Science+Business Media New York.
Citation: Optical and Quantum Electronics (2014), 46(3): 423-438
Issue Date: 2014
Keywords: Argument principle method
Derivative free method
Modes of waveguide
Planar waveguide
ISSN: 3068919
Author Scopus IDs: 50761464800
Author Affiliations: Semwal, G., Instrument Research and Development Establishment, Dehradun 248008, India
Rastogi, V., Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, India
Corresponding Author: Semwal, G.; Instrument Research and Development Establishment, Dehradun 248008, India; email:
Appears in Collections:Journal Publications [PH]

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