We demonstrate a novel method of phase mask local period modification in the range between a few pm and a few nm and spatial resolution of a few mm by its non-uniform heating and stretching.
© 2003 Optical Society of America
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.1480) Optical devices : Bragg reflectors
(230.1950) Optical devices : Diffraction gratings
M. Sumetsky, Y. Dulashko, A. Kortan, P. I. Reyes, and P. S. Westbrook, "Thermo-mechanical modification of phase mask local period for advanced fiber Bragg grating fabrication," in Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, Technical Digest (Optical Society of America, 2003), paper PD4.
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