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http://dx.doi.org/10.3807/KJOP.2003.14.2.135

Design and fabrication of temperature-independent AWG-WDM devices using polymer overcladding  

Han, Young-Tak (Integrated Optical Module Team ETRI)
Kim, Duk-Jun (Integrated Optical Module Team ETRI)
Shin, Jang-Uk (Integrated Optical Module Team ETRI)
Park, Sang-Ho (Integrated Optical Module Team ETRI)
Park, Yoon-Jung (Integrated Optical Module Team ETRI)
Sung, Hee-Kyeng (Integrated Optical Module Team ETRI)
Publication Information
Korean Journal of Optics and Photonics / v.14, no.2, 2003 , pp. 135-141 More about this Journal
Abstract
In arrayed waveguide grating (AWG) devices whose waveguides were composed of polymer with negative thermo-optic coefficient as overcladding, and silica with positive thermo-optic coefficient as both core and undercladding, we investigated the temperature dependence of the central wavelength using two-dimensional SFDM. From these results, it was confirmed that the temperature dependence can be nearly eliminated by adjusting the refractive index of the cladding and the thickness of the silica thin film upper-loaded on the core. Based on the numerical calculations, the AWG device with polymer overcladding was fabricated. and its optical characteristics were compared with those of the orginal silica AWG device. The introduction of polymer overcladding decreased the temperature dependence of the central wavelength from 0.0130 nm/$^{\circ}C$ to 0.0028 nm/$^{\circ}C$ without deteriorating the insertion loss and crosstalk characteristics.
Keywords
arrayed waveguide grating; wavelength multiplexer; polymer overcladding; planar lightwave circuit;
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