SFDM/CWDM of Hollow-Core Photonic Crystal Fiber Based Etalon Strain Sensors with Long Cavity Lengths
(0) Spatial-frequency division multiplexing (SFDM)/coarse-wavelength division multiplexing (CWDM) of in-line fiber-optic etalon (ILFE) strain sensors, formed by a section of hollow-core photonic crystal fiber (HCPCF), is reported in this paper, for the first time to the best of our knowledge. Due to the low thermal expansion coefficient of HCPCF, such a strain sensor is much less sensitive to temperature change compared with conventional ILFE sensors. In the meanwhile, as the transmission loss of HCPCF is very low, the cavity length of the HCPCF sensor can be much longer than existing ILFEs, making it ideal for use in SFDM and offering great potential to realize multiplexing of a very large number of ILFE sensors. A SFDM/CWDM system with four HCPCF-based ILFE strain sensors is demonstrated and the experimental results show that a strain accuracy of ±5μεcan be achieved.
fiber optic sensors Photonic crystal fibers Fabry-Perot multiplezing
Y. J. Rao D. W. Duan T. Zhu Y. N. Fan
Key Lab of Optoelectronic Technology & Systems (Education Ministry of China), Chongqing University,C Key Lab of Optoelectronic Technology & Systems (Education Ministry of China), Chongqing University,C Key Lab of Optoelectronic Technology & Systems (Education Ministry of China), Chongqing University,
国际会议
第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology
沈阳
英文
1-5
2008-09-15（万方平台首次上网日期，不代表论文的发表时间）