An Extension of the Effective Index Method to Analyze Leakage Losses in Rib Type Waveguides

Authors: Borges B-H.V.¹; Romero M.A.²; Cesar A.C.²

Source: International Journal of Infrared and Millimeter Waves, Volume 20, Number 10, October 1999 , pp. 1783-1793(11)

Publisher: Springer

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Abstract:

An extension of the effective index method is proposed as a tool to investigate leakage losses in two-dimensional waveguides. The above method, referred to as the Extended Effective Index Method (EEIM), utilizes the Transfer Matrix Technique (TMT) for the calculation of the complex propagation constants. The results show that the EEIM can be applied to conventional rib leaky waveguides as well as to rib ARROW leaky waveguides. The results for rib ARROW waveguides show excellent agreement when compared to those obtained with Finite Element Method.

Keywords: integrated optics; sensors; optical waveguide; transfer matrix; leakage loss

Language: English

Document Type: Research article

Affiliations: 1: Universidade de São Paulo, Escola de Engenharia de São Carlos, Depto. de Eng. Elétrica, Av. Dr. Carlos Botelho, 1465, 13560-250 São Carlos, SP Brazil. Tel: +55-16-273-9344, Fax: +55-16-273-9372. benhur@sel.eesc.sc.usp.br 2: Universidade de São Paulo, Escola de Engenharia de São Carlos, Depto. de Eng. Elétrica, Av. Dr. Carlos Botelho, 1465, 13560-250 São Carlos, SP Brazil. Tel: +55-16-273-9344, Fax: +55-16-273-9372

Publication date: 1999-10-01