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OPTICS EXPRESS
Volume 18, Issue 2, Pages 446-450Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.000446
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We have fabricated optical waveguides inside the UV-transparent polymer, CYTOP, by femtosecond laser direct writing for propagating UV light in biochip applications. Femtosecond laser irradiation is estimated to increase the refractive index of CYTOP by 1.7 x 10(-3) due to partial bond breaking in CYTOP. The waveguide in CYTOP has propagation losses of 0.49, 0.77, and 0.91 dB/cm at wavelengths of 632.8, 355, and 266 nm, respectively. (C) 2010 Optical Society of America
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