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Transverse load sensor based on Mach-Zehnder interferometer constructed by a bowknot type taper

机译：基于蝶形锥度的马赫曾德尔干涉仪的横向载荷传感器

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摘要

A transverse load fiber sensor based on Mach-Zehnder interferometer constructed by a Bowknot-type taper between a single mode fiber (SMF) and a polarization maintaining fiber (PMF) was proposed. Due to the polarization maintaining fiber's birefringence, intensities of the two peaks which are corresponding to the fast and slow axis modes changed with the transverse load applied on the PMF. The experimental results showed that the structure with a 2 cm-long PMF has the sensitivities of 104.52 and - 102.94 dB/(N/mm) for the fast and slow axis spectral dip wavelengths of 1485 and 1545 nm in the interference pattern, respectively, which are almost 7 times higher than that of the current similar existing transverse load sensor.
机译：提出了一种基于Mach-Zehnder干涉仪的横向载荷光纤传感器，该传感器由单模光纤（SMF）和保偏光纤（PMF）之间的弓形锥度构成。由于偏振保持光纤的双折射，对应于快轴和慢轴模式的两个峰的强度随施加在PMF上的横向载荷而变化。实验结果表明，对于干涉图案中快轴和慢轴光谱浸入波长分别为1485和1545 nm的情况，具有2 cm长的PMF的结构分别具有104.52和-102.94 dB /（N / mm）的灵敏度，几乎是目前类似的现有横向负载传感器的7倍。

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