XPM-induced modulation instability in silicon-on-insulator nano-waveguides and the impact of nonlinear losses. (19th June 2018)

• Record Type: Journal Article
• Authors: Chaturvedi, Deepa; Kumar, Ajit; Mishra, Akhilesh Kumar
• Is Part Of: Journal of optics. Volume 20:Number 7(2018:Jul.)
• Publication Date: 2018-06-19
• Subjects: modulation instability -- silicon-on-insulator nanowaveguides -- two-photon absorption -- free-carrier-induced absorption -- free-carrier induced dispersion; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/aac840
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We have carried out an extensive theoretical study of cross-phase modulation induced modulation instability (MI) in a silicon-on-insulator nano-waveguide for two co-propagating waves. The analysis has been performed for two sets (with zero and varying non-zero walk-off parameter) of three different cases: when the two waves are in (i) normal dispersion regime, (ii) anomalous dispersion regime, and (iii) different dispersion regimes. In particularly, we have discussed the nonlinear losses due to two-photon absorption and free-carrier absorption. Further, we have investigated the impact of the walk-off parameter on the MI gain spectrum in the above three cases.