TY - JOUR
T1 - Temperature-insensitive refractive index sensor based on an optical fiber extrinsic Fabry-Perot interferometer processed by a femtosecond laser
AU - Liu, Pengfei
AU - Jiang, Lan
AU - Wang, Sumei
AU - Cao, Zhitao
AU - Wang, Peng
N1 - Publisher Copyright:
© 2016 Chinese Optics Letters.
PY - 2016/2/10
Y1 - 2016/2/10
N2 - An optical fiber extrinsic Fabry-Perot interferometer (EFPI) is designed and fabricated for refractive index (RI) sensing. To test the RI of liquid, the following two different methods are adopted: the wavelength tracking method and the Fourier-transform white-light interferometry (FTWLI). The sensitivities of sensors with cavity lengths of 288.1 and 358.5 μm are 702.312 nm/RIU and 396.362 μm/RIU, respectively, by the two methods. Our work provides a new kind of RI sensor with the advantages of high sensitivity, mechanical robustness, and low cross sensitivity to temperature. Also, we provide a new method to deal with gold film with a femtosecond laser.
AB - An optical fiber extrinsic Fabry-Perot interferometer (EFPI) is designed and fabricated for refractive index (RI) sensing. To test the RI of liquid, the following two different methods are adopted: the wavelength tracking method and the Fourier-transform white-light interferometry (FTWLI). The sensitivities of sensors with cavity lengths of 288.1 and 358.5 μm are 702.312 nm/RIU and 396.362 μm/RIU, respectively, by the two methods. Our work provides a new kind of RI sensor with the advantages of high sensitivity, mechanical robustness, and low cross sensitivity to temperature. Also, we provide a new method to deal with gold film with a femtosecond laser.
UR - http://www.scopus.com/inward/record.url?scp=84960539037&partnerID=8YFLogxK
U2 - 10.3788/COL201614.020602
DO - 10.3788/COL201614.020602
M3 - Article
AN - SCOPUS:84960539037
SN - 1671-7694
VL - 14
JO - Chinese Optics Letters
JF - Chinese Optics Letters
IS - 2
M1 - 020602
ER -