Title :
Feasibility of hybrid Raman/EDFA amplification in bidirectional optical transmission
Author :
Radic, S. ; Chandrasekhar, S. ; Bernasconi, P. ; Centanni, J. ; Abraham, C. ; Copner, N. ; Tan, K.
Author_Institution :
Lucent Technol. Bell Labs, Holmdel, NJ, USA
Abstract :
The feasibility of hybrid optical amplification in an interleaved bidirectional architecture is studied. An optical repeater node is constructed using an L-band erbium-doped fiber amplifier and bidirectional Raman pumping to achieve a combined gain of 34 dB. Signal impairments associated with this architecture are identified and measured. Dense wavelength-division-multiplexing transmission of 40+40 25-GHz-spaced channels is demonstrated using the hybrid bidirectional amplifier over nonzero-dispersion-shifted fiber spans.
Keywords :
Raman lasers; erbium; light transmission; optical fibre amplifiers; optical fibre communication; optical fibre dispersion; optical pumping; optical repeaters; stimulated Raman scattering; wavelength division multiplexing; 34 dB; DWDM transmission; L-band erbium-doped fiber amplifier; bidirectional Raman pumping; bidirectional optical transmission; combined gain; dense wavelength-division-multiplexing; hybrid Raman/EDFA amplification; hybrid bidirectional amplifier; hybrid optical amplification; interleaved bidirectional architecture; nonzero-dispersion-shifted fiber spans; optical repeater node; signal impairments; spaced channels; Erbium-doped fiber amplifier; Gain; Optical crosstalk; Optical fiber amplifiers; Optical pumping; Particle scattering; Propagation losses; Raman scattering; Rayleigh scattering; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
