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Proceedings Paper

Theoretical analysis of light transmission in a perfectly circular double clad fiber using coupled mode method
Author(s): Zhongnan Xu; Zejin Liu; Kailiang Duan; Wei Zhao
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Paper Abstract

Light propagation in a perfect circular double clad fiber (DCF) is numerically investigated by using the coupled mode method with translating the DCF into a single mode fiber (SMF) and an annular core fiber (ACF). The results show that for the coupling coefficients between the LP01 mode of the SMF and the guided modes (LP0n modes) of the ACF, the high-order mode has a larger coupling coefficient than the low-order mode for the ACF. By using the coupled mode equations the field distribution in the DCF core is calculated, the results show that the power shows a quasi-periodic distribution along the DCF core and its average period increases with increasing wavelength for different DCF parameters. The simulation results agree with the light ray propagation in the DCF.

Paper Details

Date Published: 16 November 2010
PDF: 7 pages
Proc. SPIE 7843, High-Power Lasers and Applications V, 784313 (16 November 2010); doi: 10.1117/12.865515
Show Author Affiliations
Zhongnan Xu, National Univ. of Defense Technology (China)
Xi'an Institute of Optics and Precision Mechanics (China)
Zejin Liu, National Univ. of Defense Technology (China)
Kailiang Duan, Xi'an Institute of Optics and Precision Mechanics (China)
Wei Zhao, Xi'an Institute of Optics and Precision Mechanics (China)

Published in SPIE Proceedings Vol. 7843:
High-Power Lasers and Applications V
Upendra N. Singh; Dianyuan Fan; Jianquan Yao; Robert F. Walter, Editor(s)

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