Das, S and Pal, A and Paul, Mukul Chandra and Sen, Ranjan (2011) Fabrication of large flattened mode optical fiber for high power laser. Proceedings of SPIE , 8173. Article Number: -81730B. ISSN 0277-786X

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Abstract

Large flattened mode optical fiber with raised index ring around the outer edge of the fiber core has been fabricated through modified chemical vapour deposition process to raise the threshold for non-linear interaction in high power laser fiber. The conversion of the fundamental mode shape from a Bessel function to a top hat function, enhances the effective area of the core intersected by the mode without increasing the physical size of the core. The shape of the fundamental mode is observed to be strongly dependent on the width of the raised index ring from the modal analysis. Suitable fiber parameters have also been estimated through the modal field analysis. Fabrication process steps have been optimized to achieve the desired fiber parameters. Modal field distribution, transmission properties and bending loss of the fabricated fibers have been characterized.

Item Type:	Article
Additional Information:	Photonics 2010 - 10th International Conference on Fiber Optics and Photonics, Guwahati, INDIA, DEC 11-15, 2010
Subjects:	Processing Science
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Jan 2012 12:26
Last Modified:	30 Mar 2016 09:50
URI:	http://cgcri.csircentral.net/id/eprint/207

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