Enhanced Raman gain coefficients and bandwidths of sodium-niobium-phosphate glasses for Raman gain media

L Sirleto,G.C Righini,D.K Tagantsev,G Messina,A.A Lipovskii,M.G Donato,S Pelli,S Santangelo

doi:10.1109/cleoe-eqec.2009.5196549

Enhanced Raman gain coefficients and bandwidths of sodium-niobium-phosphate glasses for Raman gain media

L Sirleto, G.C Righini + Show 6 more

https://doi.org/10.1109/cleoe-eqec.2009.5196549

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Publication Date: Jun 1, 2009

Citations: 2

Affiliation: Institute for Microelectronics and Microsystems, University of Reggio Calabria, Peter the Great St. Petersburg Polytechnic University, Institute for Chemical and Physical Processes, Nello Carrara Institute of Applied Physics

#Raman Gain Coefficients #Germanium-doped Silica Fibres + Show 8 more

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Abstract

Raman amplification was demonstrated in the early 1970s, but the invention of erbium-doped fiber amplifiers (EDFA) overshadowed the interest in it. Today, Raman scattering has again become a competitive approach for optical amplification because it is only restricted by the pump wavelength and Raman active modes of the gain medium. Puresilica and germanium-doped silica fibres, currently utilized as Raman gain media in telecommunications, have quite low Raman gain coefficients and a limited usable spectral bandwidth of approx. 5 THz. Therefore, the investigation of materials possessing both large Raman gain coefficients and broader spectral bandwidth than fused silica is becoming necessary to satisfy the increasing telecommunications demands.

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