All-fiber loading sensor based on a hybrid 45° and 81° tilted fiber grating structure

Zhongyuan Sun, Zhijun Yan, Chengbo Mou, Xiangchuan Wang, Jianfeng Li, Lin Zhang

Research output: Contribution to journalArticlepeer-review


We experimentally demonstrate an all-fiber loading sensor system based on a 45° and an 81° tilted fiber grating (TFG). We have fabricated two TFGs adjacent to each other in a single fiber to form a hybrid structure. When the transverse load applied to the 81° TFG, the light coupling to the two orthogonally polarized modes will interchange the power according to the load applied to the fiber, which provides a solution to measure the load. For real applications, we further investigated the interrogation of this all-fiber loading sensor system using a low-cost and compact-size single wavelength source and a power meter. The experimental results have clearly shown that a low-cost high-sensitivity loading sensor system can be developed based on the proposed TFG configuration.
Original languageEnglish
Pages (from-to)343-348
Number of pages6
JournalIEEE Sensors Journal
Issue number2
Early online date29 Sept 2015
Publication statusPublished - 15 Jan 2016

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  • fiber optical sensors
  • fiber optical gratings
  • stress measurement


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