Ultrasensitive UV-tunable grating in all-solid photonic bandgap fibers

OPTICS COMMUNICATIONS

卷:282

Article

Lazaro, J. M.^1,2,3  Kuhlmey, B. T.^1,2  Knight, J. C.⁴  Lopez-Higuera, J. M.³  Eggleton, B. J.^1,2 

[1] Univ Sydney, Sch Phys, Ctr Ultrahigh Bandwidth Devices Opt Syst, Sydney, NSW 2006, Australia

[2] Univ Sydney, Sch Phys, Inst Photon & Opt Sci, Sydney, NSW 2006, Australia

[3] Univ Cantabria, Dpto TEISA, Grp Ingn Foton, E-39005 Santander, Spain

[4] Univ Bath, Dept Phys, Ctr Photon & Photon Mat, Bath BA2 7AY, Avon, England

关键词: Photonic crystal fibers;    Long period gratings;    Tunable filters;    Refractive index sensing;    Optical fiber characterization;   

DOI  :  10.1016/j.optcom.2009.03.014

来源: Elsevier

【 摘 要 】

We study the shift of a long period grating's resonance wavelength with UV induced refractive index changes in an all-solid photonic bandgap fiber. A long period grating is mechanically imprinted in an all-solid photonic bandgap fiber with Germanium doped silica high-index rods in a lower-index silica background. The index of the high-index rods is modified through UV exposure, and we observe that the long period grating's resonance shifts with the bandgaps. With a sensitivity of 21,000 nanometers per refractive index unit and a 8.8 nm resonance width changes of refractive index of 3 x 10(-6) are in principle detectable Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

【 授权许可】

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