Highly Birefringent Microfiber Hybrid Interferometer Sensor
- 27 July 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 33 (17), 959-962
- https://doi.org/10.1109/lpt.2021.3100366
Abstract
In this work, an optical microfiber-based hybrid interferometer is presented. A combination of two types of in-line interferometers is achieved by inserting a section of nonadiabatic tapered polarization maintaining microfiber into a Lyot filter. The hybrid interference spectrum shown as large spectrum envelope and fine fringes, corresponding to the polarized and modal interferences is obtained. We experimentally investigate the response characteristics of the two-interference system using both spectral interrogation and spatial frequency domain analysis. The refractive index sensitivities are 1150.0nm/RIU and 1779.8nm/RIU, and the temperature sensitivities are 190pm/°C and -12.7 pm/°C for two interferences, respectively. The proposed hybrid interferometer has the advantages of simple device and compact structure, and has the potential of simultaneous measurement of multiple parameters.Keywords
Funding Information
- National Natural Science Foundation of China (U1701268, 61705083)
- Natural Science Foundation of Guangdong Province (2019A1515011144)
- Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2019BT02X105)
- Guangzhou Science and Technology Plan Project (201904020032)
- Fundamental Research Funds for the Central Universities
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