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Two-photon absorption effects on self-phase-modulation-based 2R optical regeneration

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4 Author(s)
Lamont, M.R.E. ; Centre for Ultrahigh-bandwidth Devices for Opt. Syst., Univ. of Sydney, NSW ; Rochette, M. ; Moss, D.J. ; Eggleton, B.J.

We theoretically investigate the influence of two-photon absorption (TPA) on the performance of self-phase-modulation-based signal regenerators using a split-step Fourier method. Simulations with 40-Gb/s return-to-zero data bit streams show that a device with TPA can improve the signal (higher output Q-factor) significantly more than a device with no TPA, and that the figure of merit of chalcogenide is close to optimal. This contrasts with the effects of TPA on nonlinear switching, which are always detrimental

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 10 )