Amplified spontaneous emission in pulse-pumped Raman amplifiers

被引：16

作者：

Bromage, J ^{[1
]}

Winzer, PJ

Nelson, LE

Mermelstein, MD

Horn, C

Headley, CH

机构：

[1] Lucent Technol, Bell Labs, Holmdel, NJ 07733 USA

[2] Crawford Hill Labs, Holmdel, NJ 07733 USA

[3] OFS Res Labs, Somerset, NJ 08873 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2003年 / 15卷 / 05期

关键词：

distributed amplifiers; optical fiber amplifiers; optical fiber communications; pulsed lasers; Raman scattering; Rayleigh scattering;

D O I：

10.1109/LPT.2003.809954

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 discuss amplified spontaneous emission (ASE) generated in Raman amplifiers that are counter-pumped with trains of pulses. Our experimental and theoretical results show that if the peak power of the pump pulses is too high, the ASE output from the amplifier can be significantly higher than that from a continuous-wave pumped amplifier providing the same gain. This effect places a lower limit on the duty cycle of pump pulses one can use for a given level of Raman gain. Furthermore, we report an additional ASE enhancement if there is insufficient walkoff between the pump pulses and copropagating ASE to average the effects of higher frequency pump intensity noise. As a result, legs pump intensity noise can be tolerated When pulse-pumping a fiber having a zero-dispersion wavelength located midway between the pump and signal wavelengths.

引用

页码：667 / 669

页数：3

共 31 条

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