Share Email Print

Proceedings Paper

Effective-index-based matrix method: a computationally simpler alternative to BPM for integrated optics design
Author(s): S. K. Lahiri; J. C. Biswas; P. Ganguly; Rabindra Nath Chakraborty
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The 2D and 3D beam propagation method (BPM) which is now widely used for the design of fiber-optic and integrated-optic components is highly computer-intensive. The matrix method, which is computationally much simpler and faster, was used to analyze 2D planar multi-layer structures. The method has now been applied to 3D channel waveguides by transforming the 2D refractive index profile over the cross-section of the channel waveguide to a 1D effective index profile and discretizing the profile into thin layers. The effective index based matrix method (EIMM) has been used to compute the guided-mode propagation constants, the coupling length of directional couplers and the bending loss in curved waveguides for Ti- indiffused LiNbO3 channel waveguides. The computed results agree closely with available experimental results. The method may also be used to compute field profiles in single and coupled waveguides. A versatile computer software is being developed to implement the above method for the design of optical waveguides and related components/devices on different substrates realized by in-diffusion, ion exchange and other techniques.

Paper Details

Date Published: 28 April 1999
PDF: 9 pages
Proc. SPIE 3666, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98, (28 April 1999); doi: 10.1117/12.347919
Show Author Affiliations
S. K. Lahiri, Indian Institute of Technology/Kharagpur (India)
J. C. Biswas, Indian Institute of Technology/Kharagpur (India)
P. Ganguly, Indian Institute of Technology/Kharagpur (India)
Rabindra Nath Chakraborty, Indian Institute of Technology/Kharagpur (India)

Published in SPIE Proceedings Vol. 3666:
International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98
Anurag Sharma; Banshi Dhar Gupta; Ajoy K. Ghatak, Editor(s)

© SPIE. Terms of Use
Back to Top