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Proceedings Paper

Bragg gratings in multimode fiber
Author(s): Hong-Gang Yu; Chun Yang; Yong Wang; Jing-Song Zhang; Jian Yang; Robert Farkas; Chang-Qing Xu
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Paper Abstract

Recently, multimode fiber (MMF) and components based on MMF have attracted much attention due to their potential applications in future optical access networks. Fiber Bragg gratings (FBGs) are considered to be key components in both telecommunication and sensing applications. Although single-mode fiber based FBGs (SMFBG) have been studied thoroughly, few studies have been reported on MMFBGs, mainly because of the complexity and multiple mode nature of the MMF. In this paper, transmission and reflection spectra of MMFBGs are studied systematically. Relationships between transmission/reflection spectra and the excitation conditions are clearly demonstrated by observing the far-field pattern. Different launching methods including the lateral offset launching and angular offset launching and light sources with different spectrum width are used in experiments. Furthermore, the transmission/reflection spectra dependence on the polarization state of excitation light and asymmetric refractive index perturbation profile are studied in detail. Theoretical simulations are used to compare these experimental results.

Paper Details

Date Published: 20 December 2004
PDF: 8 pages
Proc. SPIE 5577, Photonics North 2004: Optical Components and Devices, (20 December 2004); doi: 10.1117/12.567546
Show Author Affiliations
Hong-Gang Yu, McMaster Univ. (Canada)
Chun Yang, McMaster Univ. (Canada)
Southeast Univ. (China)
Yong Wang, McMaster Univ. (Canada)
Jing-Song Zhang, McMaster Univ. (Canada)
Jian Yang, McMaster Univ. (Canada)
Robert Farkas, McMaster Univ. (Canada)
Chang-Qing Xu, McMaster Univ. (Canada)

Published in SPIE Proceedings Vol. 5577:
Photonics North 2004: Optical Components and Devices
John C. Armitage; Simon Fafard; Roger A. Lessard; George A. Lampropoulos, Editor(s)

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