Title :
Strong Modulation Instability in a Silicon–Organic Hybrid Slot Waveguide
Author :
Xianting Zhang ; Jinhui Yuan ; Kuiru Wang ; Zhe Kang ; Binbin Yan ; Xinzhu Sang ; Qiang Wu ; Chongxiu Yu ; Farrell, Gerald
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, we investigate the strong modulation instability (MI) at telecommunication band in a silicon-organic hybrid slot waveguide. The organic material of polymer poly (bis para-toluene sulfonate) of 2, 4-hexadiyne 1, 6 diol (PTS), which has high third-order nonlinear refractive index and very low two-photon absorption, is used to fill the slot of the waveguide. The optical gain can be up to ~3600 m-1 with a low pump peak power of 300 mW. By using Gaussian pulses with width of 10 ps and peak power of 250 mW, deep modulation of the pump is achieved, and the ultrashort pulse trains with the periods of 27 and 24 fs are obtained in the anomalous and normal group-velocity dispersion regions, respectively.
Keywords :
elemental semiconductors; integrated optics; optical modulation; optical polymers; optical pumping; optical waveguides; organic-inorganic hybrid materials; refractive index; silicon; two-photon spectra; 2, 4-hexadiyne 1, 6 diol; Gaussian pulses; Si; group-velocity dispersion regions; high third-order nonlinear refractive index; optical gain; poly (bis para-toluene sulfonate); polymer; pump peak power; silicon-organic hybrid slot waveguide; strong modulation instability; telecommunication band; two-photon absorption; ultrashort pulse trains; Dispersion; Gain; Nonlinear optics; Optical pumping; Optical waveguides; Silicon; Telecommunications; Modulation instability (MI); Silicon-organic Hybrid (SOH); Slot waveguide; Ultra-short pulse train; silicon???organic hybrid (SOH); slot waveguide; ultrashort pulse train;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2439952
