TY - GEN
T1 - A fiber ring laser for temperature sensing based on in-fiber Mach-Zehnder interferometer
AU - Zhang, Xudong
AU - Liu, Jiping
AU - Hou, Liangtao
AU - Ran, Lingling
AU - Yang, Jiuru
N1 - Publisher Copyright:
© 2018 SPIE.
PY - 2018
Y1 - 2018
N2 - In this paper, a novel fiber ring laser (FRL) is proposed and investigated based on modal interference. Through core-offset splicing technique, an in-fiber Mach-Zehnder interferometer (MZI) is fabricated based on thin-core fiber and single mode fibers. Its distribution of light filed is comprehensively analyzed by beam propagation method. The FRL is then setup, in which the fabricated MZI is used as a band-pass filter. The output of laser is controlled and optimized by accurately adjusting the state of polarization controller. The experimental results show that, the extinction ratio of lasing wavelength reaches 39.8 dB, and the line width is less than 0.1 nm. Moreover, the proposed FRL is applied in temperature sensing, and the tested sensitivity reaches 122.7 pm/°C with the linearity of 0.9982. In addition, by calculation, the amplitude noise and the spectrum resolution are 8.84×10-3 nm and 2.89×10-3 nm, respectively. Therefore the detection limit in this laser sensor is about 0.07°C, which is obviously higher than that in passive fiber optic sensor.
AB - In this paper, a novel fiber ring laser (FRL) is proposed and investigated based on modal interference. Through core-offset splicing technique, an in-fiber Mach-Zehnder interferometer (MZI) is fabricated based on thin-core fiber and single mode fibers. Its distribution of light filed is comprehensively analyzed by beam propagation method. The FRL is then setup, in which the fabricated MZI is used as a band-pass filter. The output of laser is controlled and optimized by accurately adjusting the state of polarization controller. The experimental results show that, the extinction ratio of lasing wavelength reaches 39.8 dB, and the line width is less than 0.1 nm. Moreover, the proposed FRL is applied in temperature sensing, and the tested sensitivity reaches 122.7 pm/°C with the linearity of 0.9982. In addition, by calculation, the amplitude noise and the spectrum resolution are 8.84×10-3 nm and 2.89×10-3 nm, respectively. Therefore the detection limit in this laser sensor is about 0.07°C, which is obviously higher than that in passive fiber optic sensor.
KW - core offset splicing
KW - fiber ring laser
KW - modal interferometer
KW - temperature sensing
KW - thin-core fiber
UR - https://www.scopus.com/pages/publications/85059457460
U2 - 10.1117/12.2504740
DO - 10.1117/12.2504740
M3 - 会议稿件
AN - SCOPUS:85059457460
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Tenth International Conference on Information Optics and Photonics
A2 - Huang, Yidong
PB - SPIE
T2 - 10th International Conference on Information Optics and Photonics
Y2 - 8 July 2018 through 11 July 2018
ER -