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http://dx.doi.org/10.3807/KJOP.2006.17.3.209

A Simple Analytic Method for Design of Optical Circular Grating Filters with Phase-Shifting Region  

Ho, Kwang-Chun (Dept. of IC Eng., Hansung University)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.3, 2006 , pp. 209-215 More about this Journal
Abstract
Circular Bragg gratings(CBGs) canbe incorporated in most of the semiconductor laser devices because of the frequency-selective property applicable as an optical narrowband-pass filter in DWDM optical communications. In this paper, the optical filtering characteristics of CBGs are evaluated by a novel and simple analytic modal transmission-line theory(MTLT), which is based on Floquet-Babinet's principle. The numerical results reveal that this method offers a simple and convenient algorithm to analyze the filtering characteristics of CBGs as well as is extended conveniently to evaluate the guiding problems of circular multi-layered periodic structures.
Keywords
Circular bragg gratings; Optical filters; Floquet-babinet's Principle;
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