Short-length and broadband mismatched optical couplers with tapered Hamming function for C- and L-band

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题名:	Short-length and broadband mismatched optical couplers with tapered Hamming function for C- and L-band
作者:	Ku,YS;Chen,CF;Shauo,CN;Shy,HJ
贡献者:	物理學系
日期:	2010
上传时间:	2012-06-11 10:46:57 (UTC+8)
出版者:	國立中央大學
摘要:	Mismatched optical couplers with variable widths of waveguide tapered by Hamming function are numerically investigated in the demand of short-length, broadband, and low crosstalk. We used global search algorithm and beam propagation method to seek optimal structure parameters of coupling waveguide. The coupler length is 3.6 mm within the C L-band (1.53-1.61 mu m) for variable widths of waveguide at crosstalk level of -35 dB. Comparison with constant width of waveguide, the constant width of waveguide has a coupler length of 4.4 mm and can only achieve -20 dB of crosstalk within the C-band (1.53-1.565 mu m). Obviously, the waveguide with variable widths has the advantage over constant width for the demand of short-length, bandwidth, and low-crosstalk. (C) 2009 Elsevier GmbH. All rights reserved.
關聯:	OPTIK
显示于类别:	[物理學系] 期刊論文

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