Hollow-core photonic crystal fiber based modal interferometer for strain measurement
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- 作者：Huaping Gong ; gonghp77@hotmail.comAuthor Vitae ; Xiaorui Li ; Yongxing Jin ; Xinyong Dong
- 关键词：Photonic crystal fiber ; Modal interferometer ; Strain sensor
- 刊名：Sensors and Actuators A: Physical
- 出版年：2012
- 出版时间：November, 2012
- 年：2012
- 卷：187
- 期：Complete
- 页码：95-97
- 全文大小：523 K
文摘
A modal interferometer based on a 1.2 mm hollow-core photonic crystal fiber (HC-PCF) for strain measurement is presented. The modal interferometer is fabricated by splicing the two ends of the HC-PCF to single-mode fibers (SMF). The air-holes in the core and cladding of the HC-PCF are fully collapsed in the splicing process, and the length of each collapsed region is about 300 ¦Ìm. The transmission spectra with different strain levels are measured. The sensitivity of 1.83 pm/¦Ì? is achieved in the range of 0-1260 ¦Ì?, and the resolution for strain measurement was about 11 ¦Ì? for wavelength demodulation.