Strong Bragg Gratings in Highly Photosensitive Photo-Thermo-Refractive-Glass Optical Fiber

P. Hofmann (1, 2) , R. Amezcua-Correa (2) , E. Antonio-Lopez (3) , D. Ott (2) , M. Segall (2) , I. Divliansky (2) , J. Lumeau (4) , L. Glebova (2) , L.B. Glebov (2) , N. Peyghambarian (1) , A. Schülzgen (2)

1 University of Arizona
2 CREOL - Center for Research and Education in Optics and Lasers
3 CREOL - The College of Optics and Photonics [Orlando]
4 RCMO - RCMO

A new type of photosensitive fiber is demonstrated. Long lengths (>100 m) of coreless optical fiber are fabricated from highly photosensitive photo-thermo-refractive glass. A minimum loss of <;2 dB/m is measured. A holographic technique using low power near-UV two-beam interference patterns is applied to record strong and robust Bragg gratings inside the fiber. The gratings show no degradation when heated up to 425 °C for several hours.

Domaines: Optique / photonique

P. Hofmann, R. Amezcua-Correa, E. Antonio-Lopez, D. Ott, M. Segall, et al.. Strong Bragg Gratings in Highly Photosensitive Photo-Thermo-Refractive-Glass Optical Fiber. IEEE Photonics Technology Letters, 2013, 25 (1), pp.25-28. ⟨hal-00945965⟩