| ZHONG Yi-mei,TONG Zheng-rong,SONG Dian-you,ZHANG Wei-hua,QIN Juan,GAO Wen-lin.Refractive index and temperature sensor based on cleaved taper and spherical structure[J].Optoelectronics Letters,2020,16(3):171-175 |
| Refractive index and temperature sensor based on cleaved taper and spherical structure |
| Author Name | Affiliation | | ZHONG Yi-mei | Tianjin Key Laboratory of Film Electronic and Communication Devices, Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, School of Electrical and Electronic Engineering, Tian-jin University of Technology, Tianjin 300384, China | | TONG Zheng-rong | Tianjin Key Laboratory of Film Electronic and Communication Devices, Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, School of Electrical and Electronic Engineering, Tian-jin University of Technology, Tianjin 300384, China | | SONG Dian-you | Tianjin Key Laboratory of Film Electronic and Communication Devices, Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, School of Electrical and Electronic Engineering, Tian-jin University of Technology, Tianjin 300384, China | | ZHANG Wei-hua | Tianjin Key Laboratory of Film Electronic and Communication Devices, Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, School of Electrical and Electronic Engineering, Tian-jin University of Technology, Tianjin 300384, China | | QIN Juan | Tianjin Key Laboratory of Film Electronic and Communication Devices, Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, School of Electrical and Electronic Engineering, Tian-jin University of Technology, Tianjin 300384, China | | GAO Wen-lin | Tianjin Key Laboratory of Film Electronic and Communication Devices, Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, School of Electrical and Electronic Engineering, Tian-jin University of Technology, Tianjin 300384, China |
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| Abstract: |
| An in-line Mach-Zehnder interferometer (MZI) for simultaneous measurement of temperature and refractive index (RI) is proposed and demonstrated. The sensor is composed of cleaved taper, single-mode fiber (SMF) and spherical structure. Using precision device to measure the position of waist, the cleaved taper structure is obtained by cutting the taper structure. The sensitivities of the temperature are 0.052 nm/ oC and 0.037 nm/ oC in the temperature range of 25—70 oC, respectively. The RI sensitivities are ?56.59 nm/RIU and ?43.53 nm/RIU in the RI range of 1.335—1.38, respectively. This sensor has many advantages such as compact structure and good stability. |
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