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Torsion-sensitivity of mechanical long-period grating in photonic crystal fiber

X. YU1,* , P. SHUM1, S. FU1, L. DENG1

Affiliation

  1. Network Technology Research Centre, Nanyang Technological University, Research TechnoPlaza, 50 Nanyang Drive, Singapore 637553

Abstract

We demonstrate for the first time the torsion-sensitivity of a single mode photonic crystal fiber by using a stress induced mechanical long-period grating. The g-value of this special fiber is measured to be 0.13. The evolution of mode coupling in the grating device is experimentally characterized by twisting the fiber in front of the long period grating. The resonance wavelength shift with the twisting is shown to be more sensitive than that of single mode fiber..

Keywords

Long-period grating, Photonic crystal fiber, Torsion.

Submitted at: March 16, 2006
Accepted at: May 18, 2006

Citation

X. YU, P. SHUM, S. FU, L. DENG, Torsion-sensitivity of mechanical long-period grating in photonic crystal fiber, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 3, pp. 1247-1249 (2006)