Open AccessResearch on distributed intrinsic Fabry-Perot sensors
Author(s) -
Xin Gui,
Hu Chen-Chen,
Zhengying Li,
Ying Xie
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.050704
Subject(s) - multi mode optical fiber , fabry–pérot interferometer , cascade , insertion loss , sensitivity (control systems) , interferometry , single mode optical fiber , linearity , materials science , optics , multiplexing , optical fiber , optoelectronics , computer science , physics , electronic engineering , telecommunications , wavelength , chemistry , chromatography , quantum mechanics , engineering
This paper introduces a kind of single mode-multimode-single mode intrinsic Fabry-Perot interferometer (SMS-IFPI). We optimize the sensing length of the graded-index multimode fiber (GI-MMF), insertion loss, and multiplexing capability through the analysis and simulation of the optical field distribution in the GI-MMF. Experiment proves that the insertion loss of a single sensing unit from the optimized cascade SMS-IFPI may be decreased from 4 dB to 0.83 dB. Testing the response characteristics of SMS-IFPI temperature sensors in the distribution under the condition of different temperature, the experimental results show that each SMS-IFPI can have better sensitivity and linearity.