A high temperature sensor based on a peanut-shape structure Michelson interferometer

作者：Wu Di; Zhu Tao^*; Liu Min

来源：Optics Communications, 2012, 285(24): 5085-5088.

DOI：10.1016/j.optcom.2012.06.091

• Fiber-optic sensor
• High temperature
• Michelson interferometer

A fiber temperature sensor with high sensitivity based on a Michelson interferometer is realized by fusion-splicing a peanut-shape structure in single-mode fiber (SMF). The theory and experimental results show that the peanut-shape structure can couple the light energy of the core mode into the cladding and re-couple the light in the cladding into the core. A high-quality interference spectrum with a fringe visibility of about 18 dB is observed. Experimental demonstration shows that the device can be heated up to 900 degrees C with a sensitivity of about similar to 0.096 nm/degrees C. The device has the advantages of low-cost, high sensitivity and easy fabrication, which makes it attractive for sensing applications.

• 出版日期2012-11-1
• 单位重庆大学