Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Dual-pump Raman amplification with increased flatness using modulation instability

Open Access Open Access

Abstract

The application of modulation instability-initiated nonlinear broadening of two CW pumps at different wavelengths, in order to achieve superior gain ripple performance in broadband Raman amplifiers, is demonstrated for the first time experimentally. A particular example using Truewave and LEAF fibers is offered, in which the 0.1 dB gain ripple band is extended from 5 nm to 19 nm. Experimental results are in a good agreement with numerical modeling. Guidelines for optimal broadening are discussed.

©2005 Optical Society of America

Full Article  |  PDF Article
More Like This
High efficiency supercontinuum generation using ultra-long Raman fiber cavities

Atalla E. El-Taher, Juan D. Ania-Castañón, Vassilis Karalekas, and Paul Harper
Opt. Express 17(20) 17909-17915 (2009)

Gain-flattened fiber Raman amplifiers with nonlinearity-broadened pumps

D. A. Chestnut and J. R. Taylor
Opt. Lett. 28(23) 2294-2296 (2003)

Novel design of inherently gain-flattened discrete highly nonlinear photonic crystal fiber Raman amplifier and dispersion compensation using a single pump in C-band

Shailendra K. Varshney, Takeshi Fujisawa, Kunimasa Saitoh, and Masanori Koshiba
Opt. Express 13(23) 9516-9526 (2005)

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (4)

Fig. 1.
Fig. 1. System schematic
Fig. 2.
Fig. 2. CW light after propagation through 10.390km length of Truewave, the dispersion zero is approximately at 1454nm. The MI peaks produced at 1455nm can be seen, but are not apparent at 1450nm.
Fig. 3.
Fig. 3. Pump spectra at the input (grey lines) and output (black lines) of the broadening pre-fibers. Top-1455 nm. Bottom-1480 nm.
Fig. 4.
Fig. 4. Gain spectra of the amplifier on its different configurations: Top-With unbroadened pumps. The solid line corresponds to the experimental result, while the dashed line shows the numerical prediction. Center-With nonlinearly-broadened pumps. The solid line corresponds to the experimental result, while the dashed line shows the numerical prediction. Bottom-Comparison between the gain ripples with and without pump broadening.

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

g ( Ω ) = β 2 Ω [ Ω c 2 Ω 2 ] 1 2
Ω 2 < Ω c 2 = ( 4 γ P in e α z ) β 2
ω 0 ± Ω MAX , Ω MAX = [ 2 γ P in exp ( α z ) β 2 ] 1 2 .
Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved