Steep skirt fibre Bragg grating fabrication using a new apodised phase mask

被引:12
作者
Pan, JJ [1 ]
Shi, Y [1 ]
机构
[1] E TEK Dynam Inc, San Jose, CA 95131 USA
关键词
gratings in fibres; wavelength division multiplexing;
D O I
10.1049/el:19971264
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Dense WDM systems demand fibre Bragg gratings (FBG) with low sidelobes and a sharp spectral skirt. A new apodised phase mask is reported here for efficiently suppressing sidelobes in FBG production. A 20dB sidelobe reduction, measured by both an OSA and a tunable laser scanning technique, was achieved. The skirt steepness, which is a ratio of the FBG reflection bandwidth al -25dB to the bandwidth at -0.5dB, was demonstrated to be 1.85. The FBGs are suitable for dense WDM with a channel spacing of < 0.8nm.
引用
收藏
页码:1895 / 1896
页数:2
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