Title :
Miniature End-Capped Fiber Sensor for Refractive Index and Temperature Measurement
Author :
Xuan-Yu Zhang ; Yong-Sen Yu ; Cong-Cong Zhu ; Chao Chen ; Rui Yang ; Yang Xue ; Qi-Dai Chen ; Hong-Bo Sun
Author_Institution :
State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China
Abstract :
We have demonstrated an end-of-fiber polydimethylsiloxane (PDMS) cap based fiber Fabry-Pérot interferometer in this letter, which could be used for simultaneous measurement of refractive index (RI) and temperature with extremely low cross sensitivity. The RI and temperature sensitivities of the interferometer are -240.425 dB/RI unit based on extinction ratio measurement in the RI range of 1.3625-1.4150 and 385.46 pm/°C in the temperature range of 25°C-60°C, respectively. Not only does the interferometer have the characteristics of high sensitivity and low cost, but also PDMS has a good biocompatibility, so that the sensor can be used as a cell culture or bacteria growth detection probe.
Keywords :
Fabry-Perot interferometers; fibre optic sensors; optical polymers; polymer fibres; refractive index measurement; temperature measurement; bacteria growth detection probe; biocompatibility; cell culture; end-of-fiber polydimethylsiloxane; extinction ratio measurement; fiber Fabry-Perot interferometer; low cross sensitivity; miniature end-capped fiber sensor; refractive index measurement; temperature 25 degC to 60 degC; temperature measurement; Erbium; Optical fiber sensors; Reflection; Sensitivity; Temperature measurement; Temperature sensors; Fabry–Pérot interferometer (FPI); fiber sensor; multi-parameter sensing; polydimethylsiloxane (PDMS);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2286260
