Title :
Fiber Bragg Gratings in the Visible Spectral Range With Ultraviolet Femtosecond Laser Inscription
Author :
Becker, Matthias ; Elsmann, Tino ; Schwuchow, Anka ; Rothhardt, Manfred ; Dochow, Sebastian ; Bartelt, Hartmut
Author_Institution :
Opt. Fibers & Fiber Applic., Leibniz Inst. of Photonic Technol., Jena, Germany
Abstract :
In this letter, we investigate the inscription of fiber Bragg gratings in the visible spectral range using deep ultraviolet femtosecond laser exposure and two-beam interferometry. The properties of first-order reflection gratings and third-order gratings for use in the visible wavelength range are compared. Stronger gratings have been achieved for first-order reflecting Bragg gratings compared with third-order gratings. We demonstrate a fiber Bragg grating with a grating period of 226 nm and a filtering efficiency of more than 30 dB.
Keywords :
Bragg gratings; high-speed optical techniques; laser materials processing; light interferometry; light reflection; optical fibre filters; visible spectra; fiber Bragg grating inscription; filtering efficiency; first-order reflecting Bragg gratings; third-order reflecting Bragg gratings; two-beam interferometry; ultraviolet femtosecond laser inscription; visible spectral range; wavelength 226 nm; Fiber gratings; Gratings; Indexes; Optical interferometry; Optimized production technology; Ultrafast optics; Fiber Bragg gratings; femtosecond laser; optical fiber filters; photosensitivity; two-beam interferometry;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2327662
