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Challenges in the fabrication of fibre Bragg gratings in silica and polymer microstructured optical fibres
Author(s) -
Berghmans Francis,
Geernaert Thomas,
Baghdasaryan Tigran,
Thienpont Hugo
Publication year - 2014
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201200103
Subject(s) - fabrication , materials science , cladding (metalworking) , grating , optics , phosfos , microstructure , photonic crystal fiber , optical fiber , optoelectronics , fiber bragg grating , polymer , photonic crystal , composite material , plastic optical fiber , fiber , fiber optic sensor , medicine , wavelength , alternative medicine , physics , pathology
This paper reviews the state‐of‐the‐art of grating fabrication in silica and polymer microstructured optical fibres. It focuses on the difficulties and challenges encountered during photo‐inscription of such gratings and more specifically on the effect of the air hole lattice microstructure in the cladding of the fibre on the transverse coupling of the coherent writing light to the core region of the fibre. Experimental and computational quantities introduced thus far to assess the influence of the photonic crystal lattice on grating writing efficiency are reviewed as well, together with techniques that have been proposed to mitigate this influence. Finally, early proposals to adapt the microstructure in view of possibly enhancing multi‐photon grating fabrication efficiency are discussed.