All-optical signal gating in cascaded long-period fiber gratings

被引：19

作者：

Jeong, Y ^{[1
]}

Baek, S ^{[1
]}

Lee, B ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Elect Engn, Seoul, South Korea

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2000年 / 12卷 / 09期

关键词：

fiber gratings; nonlinear optics; optical fiber communication; optical fiber devices; optical switches;

D O I：

10.1109/68.874240

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：

An all-optical signal gating has been demonstrated in cascaded long-period fiber gratings using cross-phase modulation by means of Q-switched pump wave packets. The obtained cascaded twin long-period fiber gratings showed an extremely narrow band of rejection of 0.5-nm bandwidth, Using this narrowband rejection filter, all-optical switching efficiency in long-period fiber grating devices could he enhanced so that they can be operated with relatively lo iv pump intensities. Approximately a 20% modulation depth of a signal wave at 1565 nm was obtained with a pump intensity of 1 GW/cm(2) at 1064 nm, The experimental results are in good agreement with numerical expectations by the discretized coupled-mode theory, which was previously proposed for the nonlinear long-period fiber grating analysis.

引用

页码：1216 / 1218

页数：3

共 10 条

[1]

Agrawal G, 1989, Nonlinear Fiber Optics

[2]

de Sterke C. M., 1994, PROGR OPTICS, VXXXIII

[3] All-optical switching in long-period fiber gratings [J].