Journal
POLYMER ENGINEERING AND SCIENCE
Volume 49, Issue 10, Pages 2015-2019Publisher
WILEY
DOI: 10.1002/pen.21441
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Funding
- Ministry of Education of the People's Republic of China [NCET-05-0465]
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Low-loss slab waveguides with air as overcladding based on a high glass transition temperature (T-g) polycarbonate were fabricated through spin-coating. Optical absorption and thermo-optic coefficient were investigated by spectrum analysis and prism coupler, respectively. Prism-coupling and charge-coupled device (CCD) camera imaging method were exploited together to evaluate the overall propagation loss of slab waveguides. The measured results of prism coupler were 0.282 dB/cm at 1310 nm and 0.197 dB/cm at 632.8 nm, whereas 0.07 dB/cm at 632.8 nm using CCD camera imaging method. Based on the same material, straight ridge waveguides and multimode interference couplers were fabricated through photolithograph and reactive ion etching, revealing smooth sides and excellent definition. POLYM. ENG. SCI, 49:2015-2019, 2009. (C) 2009 Society of Plastics Engineers
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