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Optical Engineering

Enhanced negative group velocity propagation in a highly nonlinear fiber cavity via lased stimulated Brillouin scattering
Author(s): Liang Zhang; Li Zhan; Minglei Qin; Tantan Wang; Jinmei Liu
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Paper Abstract

Negative group velocity superluminal propagation has been experimentally investigated based on stimulated Brillouin scattering in a 10-m highly nonlinear fiber (HNLF) ring cavity. The advancement of 365.8 ns with a high average slope efficiency of 118.9  ns/mw versus the output lasing power was observed. The maximum negative group velocity of −0.105c and the minimum group index of −9.499 have been achieved by using the HNLF with high Brillouin gain coefficient and the optimized 1/99 coupler ratio in the cavity. The tunability of negative group velocity and group index can be easily controlled by the input pump power and optical coupler ratio indicating potential applications for a highly advanced sensing scheme based on Brillouin oscillation superluminal propagation.

Paper Details

Date Published: 27 June 2014
PDF: 5 pages
Opt. Eng. 53(10) 102702 doi: 10.1117/1.OE.53.10.102702
Published in: Optical Engineering Volume 53, Issue 10
Show Author Affiliations
Liang Zhang, Shanghai Jiao Tong Univ. (China)
Li Zhan, Shanghai Jiao Tong Univ. (China)
Minglei Qin, Shanghai Jiao Tong Univ. (China)
Tantan Wang, Shanghai Jiao Tong Univ. (China)
Jinmei Liu, Shanghai Jiao Tong Univ. (China)

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