Extending the Gain Bandwidth of Combined Raman-Parametric Fiber Amplifiers Using Highly Nonlinear Fiber

• Published in: Journal of lightwave technology Vol. 27; no. 5; pp. 583 - 589
• Main Authors: Ummy, M.A., Arend, M.F., Leng, L., Madamopoulos, N., Dorsinville, R.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.03.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amplification; Amplifiers; Applied sciences; Bandwidth; Circuit properties; Electric, optical and optoelectronic circuits; Electronics; Erbium-doped fiber amplifier; Exact sciences and technology; Fiber nonlinear optics; Fibers; Gain; Gain flattening filter; highly nonlinear fiber; Integrated optics. Optical fibers and wave guides; Noise levels; Nonlinearity; Optical amplifiers; Optical and optoelectronic circuits; Optical fiber amplifiers; optical fiber parametric amplifiers; Optical fibers; Optical noise; Raman amplifier; Semiconductor optical amplifiers; Stimulated emission; US Department of Transportation; Wavelengths; Integrated optics; Non linear material; Optical parametric amplifier; Bit error rate; Non linear optics; optical fiber parametric amplifiers; highly nonlinear fiber; Optical fiber amplifiers; Flattening; Raman amplifier; Raman scattering; Optical amplifier; Gain flattening filter; Gain; Optical fiber
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2008.2004948

The authors demonstrate extended flat gain bandwidth by combining Raman and parametric processes. The increase in bandwidth is accomplished by extending the Raman gain region to the longer wavelength side of the Raman gain by using parametric gain. Two different configurations of the amplifier are investigated. The associated gain and bit error performance is characterized. A gain of about 15 dB, with gain flatness of 5 dB is measured.