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Proceedings Paper

Slot-based athermal silicon arrayed-waveguide grating (AWG)
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Paper Abstract

A slot waveguide structure is used in the part of arrayed waveguides in AWG instead of silicon waveguides. It is filled with high negative thermo-optic coefficient polymer in the narrow slot. The arrayed slot structure can remarkably reduce the center wavelength shift when the temperature changes. In this study, we use the polymer WIR30-490 and ZP49 to be filled in the slot. The thermo-optic coefficients of WIR30-490 and ZP49 are negative, and have the same order of magnitude with silicon. In our simulations, by adjusting several variables of the slot structure, such as the width of the slot between the pair of silicon wires, the width of the silicon waveguide, and the height of the silicon waveguide, we can get the athermal condition of AWG for each polymer. Even if there is an acceptable error on fabrication, temperature-dependent center wavelength shift of AWG can still be reduced down to 1 pm/°C. It makes the fabrication of athermal silicon AWG possible.

Paper Details

Date Published: 11 November 2008
PDF: 8 pages
Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 71340X (11 November 2008); doi: 10.1117/12.803953
Show Author Affiliations
Xiang Wang, Zhejiang Univ. (China)
Simiao Xiao, Zhejiang Univ. (China)
Weiwei Zheng, Zhejiang Univ. (China)
Fan Wang, Zhejiang Univ. (China)
Yinlei Hao, Zhejiang Univ. (China)
Xiaoqing Jiang, Zhejiang Univ. (China)
Minghua Wang, Zhejiang Univ. (China)
Jianyi Yang, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 7134:
Passive Components and Fiber-based Devices V
Ming-Jun Li; Ping Shum; Ian H. White; Xingkun Wu, Editor(s)

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