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Hybrid sol-gel channel waveguide patterning using photoinitiator-free materials

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3 Author(s)
Moreira, P.J. ; Dept. de Fisica, Univ. do Porto, Portugal ; Marques, P. ; Leite, A.P.

Fabrication of organic-inorganic sol-gel glass channel waveguides by ultraviolet (UV) photopolymerization of material synthesized from the precursor methacryloxypropyltrimethoxysilane is performed using a pulsed 248-nm excimer laser without the need of photoinitiators. The transmission spectra of channel waveguides are presented. Absorption bands are identified, revealing high loss (4-5 dB/cm) at 1.55 μm mainly due to strong OH group content and an acceptable value of 0.4 dB/cm at 1.3 μm. Heat treatment and UV irradiation showed similar effects on the transmission spectra of channel waveguides, revealing no loss improvement in the 1.55-μm region.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 2 )

Date of Publication:

Feb. 2005

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