Frontiers of Optoelectronics, 2015, 8 (4): 431, 网络出版: 2016-01-06
Fiber up-taper assisted Mach-Zehnder interferometer for high sensitive temperature sensing
Fiber up-taper assisted Mach-Zehnder interferometer for high sensitive temperature sensing
fiber sensor fiber sensor Mach-Zehnder interferometer (MZI) Mach-Zehnder interferometer (MZI) multimode fiber (MMF) multimode fiber (MMF) up-taper up-taper
摘要
A new in-line Mach-Zehnder interferometer (MZI) sensor consisting of a stub of multi-mode fiber and an up-taper was proposed and demonstrated. Temperature measurement can be carried out by detecting wavelength shift. Dependency of sensitivity on interferometer length and dip wavelength was discussed. Experimental results showed a maximum temperature sensitivity of 113.6 pm/°C can be achieved, which is superior to most fiber temperature sensors based on in-line MZIs within the range from 20°C to 80°C, also a good mechanical strength can be obtained. The proposed sensor is a good candidate for temperature measurement, due to the advantages of simple structure, easy fabrication, costeffective and high sensitivity.
Abstract
A new in-line Mach-Zehnder interferometer (MZI) sensor consisting of a stub of multi-mode fiber and an up-taper was proposed and demonstrated. Temperature measurement can be carried out by detecting wavelength shift. Dependency of sensitivity on interferometer length and dip wavelength was discussed. Experimental results showed a maximum temperature sensitivity of 113.6 pm/°C can be achieved, which is superior to most fiber temperature sensors based on in-line MZIs within the range from 20°C to 80°C, also a good mechanical strength can be obtained. The proposed sensor is a good candidate for temperature measurement, due to the advantages of simple structure, easy fabrication, costeffective and high sensitivity.
Lili MAO, Qizhen SUN, Ping LU, Zefeng LAO, Deming LIU. Fiber up-taper assisted Mach-Zehnder interferometer for high sensitive temperature sensing[J]. Frontiers of Optoelectronics, 2015, 8(4): 431. Lili MAO, Qizhen SUN, Ping LU, Zefeng LAO, Deming LIU. Fiber up-taper assisted Mach-Zehnder interferometer for high sensitive temperature sensing[J]. Frontiers of Optoelectronics, 2015, 8(4): 431.