Analysis and optimisation of the apodisation sharpness for linearly chirped dispersion compensating gratings

被引：7

作者：

Fernández, P ^{[1
]}

Aguado, JC ^{[1
]}

Blas, J ^{[1
]}

Durán, R ^{[1
]}

Lorenzo, RM ^{[1
]}

Abril, EJ ^{[1
]}

机构：

[1] Univ Valladolid, Dept Signal Theory Commun & Telemat Engn, E-47011 Valladolid, Spain

来源：

IEE PROCEEDINGS-OPTOELECTRONICS | 2004年 / 151卷 / 02期

关键词：

D O I：

10.1049/ip-opt:20040172

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：

The impact of the apodisation sharpness on the spectral response of linearly chirped dispersion compensating gratings is evaluated. It will be demonstrated that the behaviour of the mean dispersion, group delay ripple, reflection bandwidth and insertion losses shows stronger dependence on the apodisation sharpness than on the type of apodisation profile. A detailed analysis is carried out with the view to compare the spectral characteristics of linearly chirped gratings applying different apodisation profiles with increasing sharpness to compensate the dispersion of 100 km of standard single-mode fibre. It will be shown that an apodisation factor of similar to0.8 results in minimum group delay ripple impact, minimum deviation from the required dispersion value and maximum reflection bandwidth ensuring, at the same time, minor increase of grating length and insertion losses compared with the non-apodised case. This value can be considered as the optimum apodisation sharpness for the profiles under study, allowing faster modelling and more effective fabrication steps for reflective dispersion compensating gratings.

引用

页码：69 / 73

页数：5

共 15 条

[1] Emulated single-mode fiber-optic link by use of a linearly chirped fiber Bragg grating [J].