A novel temperature-insensitive strain sensor, based on an in-line Mach-Zehnder interferometer, is fabri- cated by concatenating two waist-enlarged fiber tapers separated by a short piece of photonic crystal fiber. Th...A novel temperature-insensitive strain sensor, based on an in-line Mach-Zehnder interferometer, is fabri- cated by concatenating two waist-enlarged fiber tapers separated by a short piece of photonic crystal fiber. The interference spectrum of the proposed sensor is analyzed in detail. Experimental results demonstrate that this sensor has a strain sensitivity of 3.02 pm/μe and maintains the temperature insensitivity feature. The proposed sensor has great potential in diverse sensing applications due to its advantages, such as its compact size, low cost, and simple fabrication process.展开更多
An in-line Fabry-Perot （FP） refractive index （RI） sensor based on an intrinsic FP cavity and fabricated by the etching and fusion splicing method is proposed. The experimental results demonstrate that the sensor p...An in-line Fabry-Perot （FP） refractive index （RI） sensor based on an intrinsic FP cavity and fabricated by the etching and fusion splicing method is proposed. The experimental results demonstrate that the sensor possesses a high resolution of 1508 nm/RIU for the measurement of acetylene gas RI. The temperature- response measurement shows that the sensor is insensitive to room temperature variations. The FP RI sensor is suitable for applications in biosensing and environmental monitoring because of its high sensitivity and structural simplicity, thereby making it suitable for low-cost mass production.展开更多
基金supported by the National Natural Science Foundation of China(No.61108076)the Open Foundation of National Laboratory for Infrared Physics, Chinese Academy of Sciences(No.201007)+1 种基金the Key Research Project of the Anhui Education Department(No. KJ2011A009)the 211 Project of Anhui University
文摘A novel temperature-insensitive strain sensor, based on an in-line Mach-Zehnder interferometer, is fabri- cated by concatenating two waist-enlarged fiber tapers separated by a short piece of photonic crystal fiber. The interference spectrum of the proposed sensor is analyzed in detail. Experimental results demonstrate that this sensor has a strain sensitivity of 3.02 pm/μe and maintains the temperature insensitivity feature. The proposed sensor has great potential in diverse sensing applications due to its advantages, such as its compact size, low cost, and simple fabrication process.
基金supported by the National Natural Science Foundation of China (No. 61108076)the Open Foundation of National Laboratory for Infrared Physics,Chinese Academy of Science (No. 201007)+1 种基金the Key Research Project of the Anhui Education Department (No. KJ2011A009)the "211" Project of Anhui University
文摘An in-line Fabry-Perot （FP） refractive index （RI） sensor based on an intrinsic FP cavity and fabricated by the etching and fusion splicing method is proposed. The experimental results demonstrate that the sensor possesses a high resolution of 1508 nm/RIU for the measurement of acetylene gas RI. The temperature- response measurement shows that the sensor is insensitive to room temperature variations. The FP RI sensor is suitable for applications in biosensing and environmental monitoring because of its high sensitivity and structural simplicity, thereby making it suitable for low-cost mass production.
