High-performance fiber sensor via Mach-Zehnder interferometer based on immersing exposed-core microstructure fiber in oriented liquid crystals

Li，Yong1,2,3; Wang，Lina1,2,3; Chen，Yuzhi1,2,3; Yi，Duo1,2,3; Teng，Fei1,2,3; Hong，Xueming1,2,3; Li，Xuejin1,2,3,4; Geng，Youfu1,2,3; Shi，Yue5; Luo，Dan5

2020-02-03

10.1364/OE.385521

Optics Express   影响因子和分区

10944087

1094-4087

Rapid technology development and various applications show great demands for high-quality temperature sensors with super-sensitivity, broad working temperature ranges, excellent linearity and high stability. Although tremendous efforts have been dedicated towards developing fiber sensors with high performance, challenges still remain in achieving all of the four parameters. Herein, we fabricate a fiber sensor via a Mach-Zehnder interferometer (MZI) combined with a liquid crystal (LC)-filled microtube, where the LC in the microtube is uniformly orientated. The LCs with uniform orientation treatment play a vital role in the fiber sensor. The feasibility of this sensor was verified by theoretical simulation and demonstrated through experiments. The fabricated LC fiber sensor has super temperature sensitivity of −21.6 nm/°C with a good linearity of 0.976 from 22°C to 31°C, −558.5 nm/°C from 31°C to 32°C, −37.3 nm/°C with a good linearity of 0.999 from 32°C to 34°C and −6.7 nm/°C with a good linearity of 0.999 from 34°C to 110°C, respectively. The sensitivity of the fiber sensor is increased by up to 155 times, compared to the previously reported fiber sensor filled with LC based on the MZI without LC orientation treatment. The fiber sensor with super-sensitivity, broad working temperature range, excellent linearity and high stability provides great potential applications in such as environment monitoring, food detection, medicine, and chemical industry.

EI ; SCI

英语

其他

[JCYJ20160307145209361] ; Natural Science Foundation of Guangdong Province[2018A030313376] ; Science and Technology Planning Project of Shenzhen Municipality[JCYJ20160226192754225] ; Science and Technology Planning Project of Guangdong Province[2017A010101018] ; National Natural Science Foundation of China[61505115]

Optics

Optics

WOS:000514570800074

OSA - The Optical Society

20200608125356

Chemical detection ; Chemical industry ; Chemical stability ; Fibers ; Liquid crystals ; Mach-Zehnder interferometers

Optical Devices and Systems:741.3 ; Chemistry:801 ; Chemical Engineering, General:805 ; Temperature Measuring Instruments:944.5

PHYSICS

2-s2.0-85078848670

Scopus

1.College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen,518060,China
2.Shenzhen Key Laboratory of Sensor Technology,Shenzhen,518060,China
3.Shenzhen Engineering Laboratory for Optical Fiber Sensors and Networks,Shenzhen,518060,China
4.Chinese University of Hong Kong,Shenzhen,518172,China
5.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen, Guangdong,Xueyuan Road 1088, Nanshan District,518055,China

Li，Yong,Wang，Lina,Chen，Yuzhi,et al. High-performance fiber sensor via Mach-Zehnder interferometer based on immersing exposed-core microstructure fiber in oriented liquid crystals[J]. Optics Express,2020,28(3):3576-3586.

Li，Yong.,Wang，Lina.,Chen，Yuzhi.,Yi，Duo.,Teng，Fei.,...&Luo，Dan.(2020).High-performance fiber sensor via Mach-Zehnder interferometer based on immersing exposed-core microstructure fiber in oriented liquid crystals.Optics Express,28(3),3576-3586.

Li，Yong,et al."High-performance fiber sensor via Mach-Zehnder interferometer based on immersing exposed-core microstructure fiber in oriented liquid crystals".Optics Express 28.3(2020):3576-3586.