Skip to Main content Skip to Navigation
Journal articles

Relative intensity noise transfer of large-bandwidth pump lasers in Raman fiber amplifiers

Abstract : A theoretical analysis of the Raman amplification in optical fibers and the pump-to-signal relative intensity noise (RIN) transfer has been performed in the spectral domain. An efficient Raman amplification of a monochromatic signal beam by a large-bandwidth pump beam has been demonstrated for a pump bandwidth much smaller than the Raman linewidth. Under the same approximation the pump-to-signal RIN transfer has been calculated in both cases of copropagating and counterpropagating beams in the two limiting cases of modulated monochromatic and smooth-profile large-bandwidth pump beams. At low frequencies the excess of noise evidenced in the case of a modulated monochromatic pump beam did not exist in the case of large-bandwidth pseudoincoherent sources. As this noise reduction can be as large as 13 dB for a 40 dB net gain of the amplifier, such incoherent pumping sources must be considered for the purpose of low-noise Raman amplifiers
Document type :
Journal articles
Complete list of metadata

Cited literature [9 references]  Display  Hide  Download
Contributor : Marie-Laure Edwards Connect in order to contact the contributor
Submitted on : Thursday, February 16, 2012 - 4:25:55 PM
Last modification on : Sunday, June 26, 2022 - 11:55:32 AM
Long-term archiving on: : Thursday, May 17, 2012 - 2:31:48 AM


Publisher files allowed on an open archive


  • HAL Id : hal-00671112, version 1



Kafing Keïta, Philippe Delaye, Robert Frey, Gérald Roosen. Relative intensity noise transfer of large-bandwidth pump lasers in Raman fiber amplifiers. Journal of the Optical Society of America B, Optical Society of America, 2006, 23 (12), pp.2479-2485. ⟨hal-00671112⟩



Record views


Files downloads