Thermally fixed reflection gratings for infrared light in LiNbO(3):Ti:Fe channel waveguides.
We present a narrow-bandwidth interference filter in an optical monomode LiNbO>(3):Ti:Fe channel waveguide operating in the infrared wavelength region around lambda = 1.55 microm . The filter consists of a thermally fixed refractive-index Bragg grating recorded with visible green light by use of a holographic technique. In a first approach we measure a reflectivity for the infrared light of 60% and a linewidth (FWHM) of 0.11 nm.
Hukriede
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J
Nee
I
I
Kip
D
D
Krätzig
E
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