Salinity and Temperature Dual-Parameter Sensor Based on Fiber Ring Laser with Tapered Side-Hole Fiber Embedded in Sagnac Interferometer
This paper presented a new kind of salinity and temperature dual-parameter sensor based on a fiber ring laser (FRL) with tapered side-hole fiber (SHF) embedded in a Sagnac interferometer. The sensing structure is majorly composed of tapered SHF located in the middle of SHF inside the Sagnac interferometer loop structure. The influences of the SHF’s diameters of different tapered in the Sagnac interferometer loop on the FRL sensing system are studied. The presence of air holes in the SHF makes the cladding mode easier to excite, and the interaction between the cladding mode with its surroundings is enhanced, thus having higher salinity sensitivity. Besides, the unique advantages of high resolution, narrower linewidth, and high signal-to-noise ratio (SNR) of fiber laser make the measurement results more accurate. In this experiment, the SHF with different taper diameters was made, and it was found that reducing the diameter of the taper waist diameter could further improve the salinity sensitivity. When the waist diameter was 9.70 μm, the maximum salinity sensitivity of 0.2867 nm/‰ was achieved. Temperature sensing experiments were also carried out. The maximum temperature sensitivity of the FRL sensing system was −0.3041 nm/°C at the temperature range from 20 to 30 °C. The sensor has the characteristics of easy manufacture, good selectivity, and high sensitivity, proving the feasibility of simultaneous measurement of seawater salinity and temperature.
First ; Corresponding
Guangdong Science and Technology Department[2021A0505080002];
|WOS Research Area|
Chemistry ; Engineering ; Instruments & Instrumentation
Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
|WOS Accession No|
|EI Accession Number|
Fiber optic sensors ; Fibers ; Interferometers ; Ring lasers ; Signal to noise ratio ; Temperature sensors
|ESI Classification Code|
Information Theory and Signal Processing:716.1 ; Fiber Optics:741.1.2 ; Lasers:744 ; Solid State Lasers:744.4 ; Optical Instruments:941.3 ; Temperature Measuring Instruments:944.5
|ESI Research Field|
Cited Times [WOS]:1
|Document Type||Journal Article|
|Department||Department of Electrical and Electronic Engineering|
1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.State Key Laboratory of Analog and Mixed-Signal VLSI,University of Macau,999078,Macao
3.School of Microelectronics,Shenzhen Institute of Information Technology,Shenzhen,518172,China
4.Peng Cheng Laboratory,Shenzhen,518005,China
|First Author Affilication||Department of Electrical and Electronic Engineering|
|Corresponding Author Affilication||Department of Electrical and Electronic Engineering|
|First Author's First Affilication||Department of Electrical and Electronic Engineering|
Zhao，Fang,Lin，Weihao,Hu，Jie,et al. Salinity and Temperature Dual-Parameter Sensor Based on Fiber Ring Laser with Tapered Side-Hole Fiber Embedded in Sagnac Interferometer[J]. SENSORS,2022,22(21).
Zhao，Fang.,Lin，Weihao.,Hu，Jie.,Liu，Shuaiqi.,Yu，Feihong.,...&Shao，Liyang.(2022).Salinity and Temperature Dual-Parameter Sensor Based on Fiber Ring Laser with Tapered Side-Hole Fiber Embedded in Sagnac Interferometer.SENSORS,22(21).
Zhao，Fang,et al."Salinity and Temperature Dual-Parameter Sensor Based on Fiber Ring Laser with Tapered Side-Hole Fiber Embedded in Sagnac Interferometer".SENSORS 22.21(2022).
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