A Simple and Accurate Method to Analyze Lossy Optical Waveguides: Applications to Surface Plasmon Resonance Based Devices

Author

Kumar, Manoj ; Kumar, Ajit

Author_Institution

Dept. of Phys., Indian Inst. of Technol. Delhi, New Delhi, India

Volume

32

Issue

5

fYear

2014

fDate

1-Mar-14

Firstpage

947

Lastpage

951

Abstract

We present a simple and accurate method for obtaining modal characteristics of highly lossy waveguides. The method requires locating the positions of Lorentzian peaks for both real and imaginary parts of the propagation constants. As compared to the method calculating half width at half maximum (HWHM) of Lorentzian peaks, the present method gives much more accurate results and works even in the cases where the former fails. The method is simple to implement and converges very fast. The applicability of the method is demonstrated by taking examples of surface plasmon resonance based planar waveguide structures.

Keywords

optical planar waveguides; surface plasmon resonance; Lorentzian peaks; lossy optical waveguides; modal characteristics; planar waveguide structures; propagation constants; surface plasmon resonance based devices; Eigenvalues and eigenfunctions; Optical sensors; Optical surface waves; Optical waveguides; Planar waveguides; Surface waves; Effective index; planar waveguides; surface plasmon resonace (SPR);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2013.2295241

Filename

6689319