Title :
Chirped Phase Mask Interferometer for Fiber Bragg Grating Array Inscription
Author :
Becker, Martin ; Elsmann, Tino ; Latka, Ines ; Rothhardt, Manfred ; Bartelt, Hartmut
Author_Institution :
Leibniz Inst. of Photonic Technol., Jena, Germany
Abstract :
We present a phase mask inscription technique with two beam interferometry using a lateral nonhomogeneous beam splitter to create gratings with nonhomogeneous periods, the so-called chirped fiber Bragg gratings. Inscription experiments with deep ultraviolet excimer and femtosecond laser sources reveal how this inscription method depends on the coherence properties of the inscription laser. Nonhomogeneous beam splitters are shown to provide a method to generate chirped fiber Bragg gratings with great wavelength versatility, even with the ultraviolet femtosecond laser.
Keywords :
Bragg gratings; excimer lasers; high-speed optical techniques; light interferometers; optical arrays; optical beam splitters; optical fibres; chirped fiber Bragg gratings; chirped phase mask interferometer; coherence properties; deep ultraviolet excimer laser sources; femtosecond laser sources; fiber Bragg grating array inscription; inscription laser; lateral nonhomogeneous beam splitter; nonhomogeneous periods; phase mask inscription technique; two-beam interferometry; ultraviolet femtosecond laser; Bragg gratings; Chirp; Equations; Gratings; Laser beams; Optical interferometry; Ultrafast optics; Femtosecond laser; Fiber Bragg gratings; femtosecond laser; fiber Bragg gratings; optical fiber filters; two-beam interferometry;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2015.2394299
