Journal
OPTICS COMMUNICATIONS
Volume 266, Issue 1, Pages 332-335Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2006.04.048
Keywords
polymeric wavelength filters; thermo-optical materials; gratings; proximate-contact lithography; tunable
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Tunable polymer wavelength filters are demonstrated using a silicon-nitride grating which gives high refractive index contrast with polymers. The polymer waveguides are defined using direct patterning of a liquid-state UV-curable polymer by proximate-contact lithography technique. The wavelength filter exhibits a narrow bandwidth of less than 1.0 nm and a transmission dip of more than -15 dB. The peak wavelength is shifted over 10 nm in the temperature range of 25-70 degrees C and the thermal tuning efficiency is -0.212 nm/degrees C. (c) 2006 Elsevier B.V. All rights reserved.
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