Power penalty for optical signals due to dispersion slope in WDM filter cascades

被引：32

作者：

Kuznetsov, M ^{[1
]}

Froberg, NM ^{[1
]}

Henion, SR ^{[1
]}

Rauschenbach, KA ^{[1
]}

机构：

[1] MIT, Lincoln Lab, Lexington, MA 02420 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1999年 / 11卷 / 11期

关键词：

communication system performance; dispersion; fiber gratings; optical communication; optical filters; wavelength division multiplexing;

D O I：

10.1109/68.803062

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：

We calculate the receiver power penalty due to the accumulated dispersion slope of optical filter cascades in wavelength-division-multiplexed optical networks. For flat-top fiber Bragg grating and thin-film filters, dispersive rather than amplitude filter effects dominate the cascade power penalty, which increases with dispersion slope and signal frequency detuning from the cascade zero-dispersion point. The dispersion slope of these filters varies as the inverse cube of their bandwidth, causing increased penalties for narrow filters in systems with small channel spacing. For a 60-GHz-wide Bragg grating filter with a 1.3-ns/nm(2) dispersion slope, a cascade of 26 filters can be tolerated at 10 Gbit/s with +/-5 GHz allowed detuning. Optically preamplified receivers have significantly larger dispersion penalties than thermal-noise-limited receivers.

引用

页码：1411 / 1413

页数：3

共 7 条

[1]

Agrawal G. P, 1997, FIBER OPTIC COMMUNIC, V2nd

[2] Architectures and technologies for high-speed optical data networks [J].