Micro-ridge long-period fiber gratings inscribed on a polarization-maintaining fiber for measurement of strain

Oh-Jang Kwon; Myungjun Shin; Young-Guen Han

doi:10.1117/12.968576

17 October 2012 Micro-ridge long-period fiber gratings inscribed on a polarization-maintaining fiber for measurement of strain

Oh-Jang Kwon, Myungjun Shin, Young-Guen Han

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842140 (2012) https://doi.org/10.1117/12.968576
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Micro-ridge long-period fiber gratings (MRLPFGs) inscribed on a polarization-maintaining fiber (PMF) were demonstrated. The cladding region of the PMFs was periodically etched by using a wet etching technique, resulting in the periodic micro-ridges in the surface of the PMF. The PMF-based MRLPFGs has two resonant peaks because of the birefringence of the PMF. Two resonant peaks of the PMF-based MRLPFGs were generated by increasing the applied strain because of the photoelastic effect. The peak depth is only changed by increasing the external strain. It means that the proposed PMF-based MFLPFGs are very useful for the application to strain sensors.

Citation Download Citation

Oh-Jang Kwon, Myungjun Shin, and Young-Guen Han "Micro-ridge long-period fiber gratings inscribed on a polarization-maintaining fiber for measurement of strain", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842140 (17 October 2012); https://doi.org/10.1117/12.968576

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