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Proceedings Paper

Design of strong Bragg gratings in semiconductors
Author(s): B. M. Azizur Rahman; N. Mahmood; J. M. Gomoluch; Najm Anwar; Kenneth T. V. Grattan
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Paper Abstract

Bragg grating-based optical systems are important for both telecommunications and sensor applications. Work to date on the simulation of such systems has concentrated upon using approximate methods such as the coupled mode theory (CMT). In this work, a combination of three numerical methods has ben used, all of which are rigorous and at the same time computationally very efficient. The new approach presented here incorporates the finite element, the least square boundary residual and the transfer matrix methods. The simulated results obtained show that the CMT is in general adequate for the characterization of Bragg grating devices in fiber, since the perturbed refractive index change is small. However, for Bragg grating devices in semiconductors, the CMT is shown to generate less accurate result. Simulated results obtained for various types of grating devices, such as uniform, chirped, apodized, phase-shifted, super- structures and sampled grating devices are presented.

Paper Details

Date Published: 30 July 2001
PDF: 9 pages
Proc. SPIE 4532, Active and Passive Optical Components for WDM Communication, (30 July 2001); doi: 10.1117/12.436019
Show Author Affiliations
B. M. Azizur Rahman, City Univ. (United Kingdom)
N. Mahmood, City Univ. (United Kingdom)
J. M. Gomoluch, City Univ. (United Kingdom)
Najm Anwar, City Univ. (United Kingdom)
Kenneth T. V. Grattan, City Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 4532:
Active and Passive Optical Components for WDM Communication
Achyut Kumar Dutta; Abdul Ahad Sami Awwal; Niloy K. Dutta; Katsunari Okamoto, Editor(s)

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