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Raman Amplification in Multimode Fiber

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2 Author(s)
Arup Polley ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA ; Stephen E. Ralph

We demonstrate that the Raman gain of the fundamental mode in graded-index multimode fiber (MMF) is comparable to that of standard single-mode fiber using the same pump power. Moreover, we show that mode-selective gain is significantly enhanced by the radial dependence of the GeO2 concentration in these fibers. The mode-selective gain is also shown, via impulse responses and eye diagrams, to reduce the intersymbol interference for near center-launch excitations and thereby enhance high-speed MMF link performance

Published in:

IEEE Photonics Technology Letters  (Volume:19 ,  Issue: 4 )