Journal
OPTICS LETTERS
Volume 36, Issue 24, Pages 4755-4757Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.36.004755
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Funding
- Air Force Office of Scientific Research [FA8655-07-1-3046]
- Research Project of High National Interest [2006022132_001]
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We report on the investigation and characterization of an optically tunable filtering effect, observed in a waveguide grating made of alternated strips of photocurable polymer and a mixture of azo-dye-doped liquid crystal. The grating is sandwiched between two borosilicate glasses, one of which includes an ion-exchanged channel waveguide, which confines the optical signal to be filtered. Exposure to a low power visible light beam modifies the azodye molecular configuration, thus allowing the filtered wavelength to be tuned over a 6.6 nm range. Simulations of the filtering response are well described with our experimental findings. (C) 2011 Optical Society of America
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