Selectively infiltrated photonic crystal fibers for strain measurement with ultra-high sensitivity

Y. Wang; D. N. Wang

doi:10.1117/12.945920

7 November 2012 Selectively infiltrated photonic crystal fibers for strain measurement with ultra-high sensitivity

Y. Wang, D. N. Wang

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84217J (2012) https://doi.org/10.1117/12.945920
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

An ultrasensitive strain sensor is demonstrated by selectively filling one of the air holes in the photonic crystal fiber. Light propagated in the photonic crystal fiber core can be coupled to the liquid-filled rod-waveguide efficiently under phase-matching conditions. The resonant wavelength, which corresponds to the coupling between the fundamental core mode and the fundamental mode of the adjacent liquid rod waveguide, experiences large shift by applying axial strain. The experimental results obtained show that the strain sensitivity achieved is ~394.6 pm/με, which is one or two orders higher than that of conventional fiber gratings.

Citation Download Citation

Y. Wang and D. N. Wang "Selectively infiltrated photonic crystal fibers for strain measurement with ultra-high sensitivity", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84217J (7 November 2012); https://doi.org/10.1117/12.945920

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