A Novel Long Distance Fiber Bragg Grating Sensor System with Low Threshold Pump Power and High OSNR

DOI

10.2991/cecs-18.2018.54How to use a DOI?

Keywords

Long distance FBG sensor system, Raman fiber amplifier, Erbium dope fiber laser, OSNR.

Abstract

We propose a novel fiber Bragg grating (FBG) sensor system with low pump power and high optical signal to noise ratio (OSNR). This sensor system is based on a distributed Raman fiber amplifier and an Erbium doped fiber laser (EDFL). The EDFL cavity is composed by an FBG and a fiber loop mirror which decrease the laser threshold obviously. By recycling the residual Raman pump power as the EDFL pump, the overall system configuration was significantly simplified without any additional light source. The experiment results show that only 140mW of 1470nm Raman pump power can provide a stable output power with an optical signal-to-noise ratio over 50dB even if the FBG is located at a 50km remote sensing position.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ronghua Chi
AU  - Hangtao Zhao
AU  - Liya Li
PY  - 2018/07
DA  - 2018/07
TI  - A Novel Long Distance Fiber Bragg Grating Sensor System with Low Threshold Pump Power and High OSNR
BT  - Proceedings of the 2018 International Symposium on Communication Engineering & Computer Science (CECS 2018)
PB  - Atlantis Press
SP  - 311
EP  - 315
SN  - 2352-538X
UR  - https://doi.org/10.2991/cecs-18.2018.54
DO  - 10.2991/cecs-18.2018.54
ID  - Chi2018/07
ER  -