Study of chirped fiber Bragg gratings apodized with different apodization length ratios

被引：0

作者：

Feng, Dejun ^{[1
]}

Lv, Mingshuang ^{[1
]}

Gao, Xia ^{[1
]}

Jiang, Mingshun ^{[2
]}

Sui, Qingmei ^{[2
]}

机构：

[1] Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China

[2] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Peoples R China

来源：

2008 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY: MICROELECTRONIC AND OPTOELECTRONIC DEVICES AND INTEGRATION | 2009年 / 7158卷

关键词：

Chirped fiber Bragg grating; coupled-mode theory; asymmetrical apodization method; group delay ripple; rised cosine function; TRANSMISSION;

D O I：

10.1117/12.807044

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：

Symmetrical apodization technique of the chirped fiber Bragg grating has the advantages of suppressing the sidelobes of reflection spectra and smoothing the curves of group delay. However, it shortens the bandwidth of the reflection spectrum markedly. Compared with symmetrical apodization method, the asymmetric method can increase the 3dB bandwidth by 64.08% without the change of group delay curves. The apodization simulation is implemented by using a rised cosine function with different apodization length ratios at both ends of the grating. There is a compromise between the bandwidth and the group delay ripple. The result shows that the grating with 30% apodization at the long wavelength end and 20% apodization at the short wavelength side can improve the reflection bandwidth effectively and depress the group delay ripple within the range of +/- 2 ps.

引用

页数：7

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