Tapered two-mode fiber based Sagnac loop temperature sensor with improved interference spectrum extinction ratio
| Autor: | Shuang Liu, Dongyu Lv, Guangwei Lu, Zuxing Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Range (particle radiation)
Accuracy and precision Materials science Extinction ratio business.industry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Temperature measurement Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Optics Interference (communication) 0103 physical sciences Sensitivity (control systems) Fiber Electrical and Electronic Engineering 0210 nano-technology business Free spectral range |
| Zdroj: | Optik. 242:167333 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2021.167333 |
| Popis: | A temperature sensor constructed with tapered two-mode fiber (TTMF) based Sagnac loop is proposed, which features improved interference spectrum extinction ratio (ER). Both theory and experiment indicate that the TTMF-based Sagnac ring structure can significantly improve the ER of the interference spectrum generated by the TTMF without changing its free spectral range (FSR). The experimental results show that the temperature sensor with increased ER can obtain a sensitivity of 295 pm/℃ in the temperature measurement range of 20–60 ℃. The high ER may play an important role in enhancing the measurement accuracy and resolution of the sensing device. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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