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Investigating Brillouin scattering in a few-mode fiber (Conference Presentation)
Author(s): Yuan Mao; Islam Ashry; Tien Khee Ng; Boon S. Ooi

Paper Abstract

Stimulated Brillouin scattering (SBS) based distributed optical fiber sensors have been deployed in a myriad of potential applications. Recently, the characteristics of SBS in few-mode-fibers (FMFs) have been investigated for designing optical sensors of high selectivity. For example, monitoring SBS of the individual modes in a two-mode fiber (TMF) allows simultaneous sensing of temperature and strain. In optical communications, on contrary, SBS degrades the signal-to-noise ratio (SNR) and limits the channel capacity. We here experimentally measure the threshold power required to stimulate Brillouin scattering in an FMF when using different mode-pair combinations as pump and probe signals. In particular, we use mode-division-multiplexing (MDM) to launch different linearly-polarized (LP) modes into the both ends of a TMF. For each mode-pair, we gradually raise the pump power until observing the transition from spontaneous to stimulated Brillouin scattering. The results presented here are considerably important for designing efficient FMF-based optical communications/sensing system.

Paper Details

Date Published: 4 March 2019
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Proc. SPIE 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII, 109021H (4 March 2019); doi: 10.1117/12.2509587
Show Author Affiliations
Yuan Mao, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Islam Ashry, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Tien Khee Ng, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Boon S. Ooi, King Abdullah Univ. of Science and Technology (Saudi Arabia)


Published in SPIE Proceedings Vol. 10902:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII
Peter G. Schunemann; Kenneth L. Schepler, Editor(s)

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