Thermal fixing of holographic gratings in planar LiNbO₃:Ti:Fe waveguides

Publication date
1998
Document type
Research article
Author
Hukriede, J.
Krätzig, E.
Organisational unit
Universität Osnabrück
DOI
URI
Scopus ID
ISSN
Series or journal
Applied Physics B Lasers and optics
Periodical volume
66
Periodical issue
3
First page
333
Last page
338
Part of the university bibliography
Nein
Abstract
Refractive index gratings in planar LiNbO3:Ti:Fe waveguides are thermally fixed during hologram recording at elevated temperatures. Different guides are fabricated by titanium indiffusion using iron-doped and nominally pure y-cut LiNbO3 substrates and characterization is performed by dark-mode spectroscopy. The refractive index modulation of gratings written and simultaneously fixed at 180°C is investigated as a function of propagation depth, titanium and iron concentration. The experimental results are compared with those obtained for unfixed holograms recorded at room temperature. © Springer-Verlag 1998.
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