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Indexed by:期刊论文

Date of Publication:2012-03-20

Journal:APPLIED OPTICS

Included Journals:SCIE、EI、Scopus

Volume:51

Issue:9

Page Number:1251-1256

ISSN No.:1559-128X

Abstract:Athermal arrayed waveguide gratings (AWGs) in silicon-on-insulator (SOI) are experimentally demonstrated for the first time to our knowledge. By using narrowed arrayed waveguides, and then overlaying a polymer layer, the wavelength temperature dependence of the AWGs is successfully reduced to -1.5 pm/degrees C, which is more than 1 order of magnitude less than that of normal SOI AWGs. The athermal behavior of the AWGs is obtained with little degradation of their performance. For the central channel, the cross talk is less than -15 dB and the insertion loss is around 2.6 dB. Good characteristics can be maintained with temperatures up to 75 degrees C. The total size of the device is 350 mu m x 250 mu m. (C) 2012 Optical Society of America