Sensing properties of femtosecond laser-inscribed long period gratings in photonic crystal fiber

Kyriacos Kalli; Tom Allsop; Kaimin Zhou; Graham Smith; Michael Komodromos; David Webb; Ian Bennion

doi:10.1007/s13320-011-0013-8

Photonic Sensors ›› 2010, Vol. 1 ›› Issue (3) : 228 -233. DOI: 10.1007/s13320-011-0013-8

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Sensing properties of femtosecond laser-inscribed long period gratings in photonic crystal fiber

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Abstract

The use of near infrared, high intensity femtosecond laser pulses for the inscription of long period fiber gratings in photonic crystal fiber is reported. The formation of grating structures in photonic crystal fiber is complicated by the fiber structure that allows wave-guidance but that impairs and scatters the femtosecond inscription beam. The effects of symmetric and asymmetric femtosecond laser inscriptions are compared and the polarization characteristics of long period gratings and their responses to external perturbations are reported.

Keywords

Fiber gratings / femtosecond laser inscription / photonic crystal fiber

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Kyriacos Kalli, Tom Allsop, Kaimin Zhou, Graham Smith, Michael Komodromos, David Webb, Ian Bennion. Sensing properties of femtosecond laser-inscribed long period gratings in photonic crystal fiber. Photonic Sensors, 2010, 1(3): 228-233 DOI:10.1007/s13320-011-0013-8

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