Article ID Journal Published Year Pages File Type
1534706 Optics Communications 2014 7 Pages PDF
Abstract

We present the fabrication and characterization of strong first-order Bragg gratings operating around 1550 nm in standard telecom fibers (SMF-28) by use of 160 fs UV laser pulses at 266 nm and a Talbot interferometer. Bragg reflectivities exceeding 50 dB are achieved in both hydrogen-free and hydrogen-loaded fibers. In addition, Bragg wavelength tuning over the telecom C-band using a single phase mask is demonstrated. We also show that the formation of Bragg gratings, relying on a two-photon absorption process, is intimately accompanied by the optical filamentation process of UV fs laser pulses during nonlinear propagation in the fiber.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
Authors
, ,