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Author:
Hejun Yu   Jinzhong Yu   Yude Yu   Zhong-Chao Fan   Shaowu Chen  


Journal:
IEEE Journal of Quantum Electronics


Issue Date:
2007


Abstract(summary):

An ultracompact, low-loss, and broad-band corner mirror, based on photonic crystals, is investigated in this paper. Based on the theoretical analysis of the loss mechanism, the boundary layers of the photonic crystal region are revised to improve the extra losses, and the transmission characteristics are evaluated by using the 3-D finite-difference time-domain method. The device with optimized structure was fabricated on silicon-on- insulator substrate by using electron-beam lithography and inductively coupled plasma etching. The measured extra losses are about 1.1plusmn0.4 dB per corner mirror for transverse-electronic polarization for the scanning wavelength range of 1510-1630 nm. Dimensions of the achieved PC corner mirror are less than 7times7 mum 2, which are only about one tenth of conventional waveguide corner mirrors.


Page:
0-883


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