scholarly journals Femtosecond Laser Microprinting of a Polymer Optical Fiber Interferometer for High-Sensitivity Temperature Measurement

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1192 ◽  
Author(s):  
Chi Li ◽  
Changrui Liao ◽  
Jia Wang ◽  
Zongsong Gan ◽  
Yiping Wang

Femtosecond laser induced multi-photon polymerization technique can be applied to fabricate an ultracompact polymer optical fiber interferometer which was embedded in a section of hollow core fiber. The production of the photoresin, used in this work, is described. Such a device has been used for temperature measurement, due to its excellent thermal properties. Transmission spectrum, structural morphology, and temperature response of the polymer optical fiber interferometer are experimentally investigated. A high wavelength sensitivity of 6.5 nm/°C is achieved over a temperature range from 25 °C to 30 °C. The proposed polymer optical fiber interferometer exhibits high temperature sensitivity, excellent mechanical strength, and ultra-high integration. More complex fiber-integrated polymer function micro/nano structures produced by this technique may result in more applications in optical fiber communication and optical fiber sensors.

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1028
Author(s):  
Na Zhao ◽  
Qijing Lin ◽  
Kun Yao ◽  
Fuzheng Zhang ◽  
Bian Tian ◽  
...  

The optical fiber temperature and refractive index sensor combined with the hollow needle structure for medical treatment can promote the standardization of traditional acupuncture techniques and improve the accuracy of body fluid analysis. A double-parameter sensor based on fiber Bragg grating (FBG) is developed in this paper. The sensor materials are selected through X-ray diffraction (XRD) analysis, and the sensor sensing principle is theoretically analyzed and simulated. Through femtosecond laser writing pure silica fiber, a high temperature resistant wavelength type FBG temperature sensor is obtained, and the FBG is corroded by hydrofluoric acid (HF) to realize a high-sensitivity intensity-type refractive index sensor. Because the light has dual characteristics of energy and wavelength, the sensor can realize simultaneous dual-parameter sensing. The light from the lead-in optical fiber is transmitted to the sensor and affected by temperature and refractive-index; then, the reflection peak is reflected back to the lead-out fiber by the FBG. The high temperature response and the refractive index response of the sensor were measured in the laboratory, and the high temperature characteristics of the sensor were verified in the accredited institute. It is demonstrated that the proposed sensor can achieve temperature sensing up to 1150 °C with the sensitivity of 0.0134 nm/°C, and refractive sensing over a refractive range of 1.333 to 1.4027 with the sensitivity of −49.044 dBm/RIU. The sensor features the advantages of two-parameter measurement, compact structure, and wide temperature range, and it exhibits great potential in acupuncture treatment.


2001 ◽  
Author(s):  
Guohui Li ◽  
Ru Yang ◽  
Dejun Han ◽  
Chengzhou Ji ◽  
Shucheng Du ◽  
...  

2008 ◽  
Author(s):  
Jayakrishnan Chandrappan ◽  
Jing Zhang ◽  
Ramkumar V. Mohan ◽  
Philbert Oliver Gomez ◽  
Than Aye Aung ◽  
...  

2009 ◽  
Vol 32 (3) ◽  
pp. 593-599 ◽  
Author(s):  
J. Chandrappan ◽  
Zhang Jing ◽  
R.V. Mohan ◽  
P.O. Gomez ◽  
T.A. Aung ◽  
...  

2008 ◽  
Author(s):  
Jayakrishnan Chandrappan ◽  
Jing Zhang ◽  
Pamidighantam V. Ramana ◽  
John Hon Shing Lau ◽  
Dim Lee Kwong

2021 ◽  
pp. 127107
Author(s):  
Zhanqiang Hui ◽  
Tianshu Zhang ◽  
Meizhi Zhang ◽  
Deng Pan ◽  
Dongdong Han ◽  
...  

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