科研之友
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摘要
A wavelength-selective coupler constructed with two parallel long-period fiber gratings (LPFGs) was investigated thoroughly. Both the numerical and experimental results verified that the filter response could be improved by adjusting the UV refractive modulation of the gratings and by controlling the external surrounding. And an add/drop channel filter with high efficiency and good spectral characteristic wits achieved even though the claddings of the two gratings were not processed. This feature is very favorable to simplify the fabrication process.
- 出版日期2009
- 单位北京交通大学
