期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 18, 期 9-12, 页码 1185-1187出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2006.874718
关键词
nonlinear optics; optical fiber devices; optical pulse shaping; optical signal processing
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.
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