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Optical Amplification and Photosensitivity in Sol-Gel Based Waveguides

Selvarajan, A and Srinivas, T (2001) Optical Amplification and Photosensitivity in Sol-Gel Based Waveguides. In: IEEE Journal of Quantum Electronics, 37 (9). 1117 -1126.


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The sol-gel process has emerged as an effective route for the fabrication of optical waveguides and guided wave devices and circuits. In particular, it is possible to incorporate active dopants like neodymium, erbium, and cesium for integrated optical active devices and circuits. In this paper, a review of recent research on active devices and circuits based on sol-gel process is made. Specific studies undertaken in our laboratory on optical amplification and photosensitivity characteristics of sol-gel optical films are presented. In the case of modeling and analysis of active sol-gel films for the study of optical amplifiers, we present the Atomic Susceptibility Theory of lasers and also the method of rate equations, duly taking into account the waveguide parameters. The Beam Propagation Method is applied to study the propagation and gain characteristics of actively doped sol-gel film devices such as straight waveguide, -branch, and directional coupler. Formation of Bragg gratings in cerium-doped films are investigated. Also, futuristic applications in MEMS where the sol-gel process will be effectively used to form optical layers that can be controlled by mechanical effects are pointed out.

Item Type: Journal Article
Publication: IEEE Journal of Quantum Electronics
Publisher: IEEE
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Atomic susceptibility theory;Integrated optics;Optical amplification;Sol-gel waveguides;Waveguide Bragg grating
Department/Centre: Division of Electrical Sciences > Computer Science & Automation
Date Deposited: 25 Aug 2008
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ac.in/id/eprint/5310

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