Title :
Terahertz Rate Pulse Train Generation Using Nonlinear Effects in Nanoscale Silicon Waveguides
Author :
Wu, Jian-Wei ; Lee, Hyun-Shik ; Lee, El-Hang
Author_Institution :
Coll. of Sci., Hohai Univ., Nanjing, China
Abstract :
We report on the new method of generating an ultra-high rate pulse train at a repetition rate of 2-THz by utilizing the combined effects of nonlinear frequency chirp and group velocity dispersion in nanoscale silicon on insulator (SOI) optical waveguides. As two optical beams modulated by the initial sinusoidal modulation elements propagate through the SOI, they are reshaped into a pulse train, in which the repetition rate can be predetermined by the modulation frequency. At the end of a 2-mm long silicon waveguide, the full width of half maximum (FWHM) of the output pulse can be compressed to about 62-fs, leading to THz pulse repetition rate.
Keywords :
chirp modulation; high-speed optical techniques; integrated optics; microwave photonics; nanophotonics; optical frequency conversion; optical modulation; optical pulse generation; optical waveguides; silicon-on-insulator; Si; frequency 2 THz; group velocity dispersion; modulation frequency; nanoscale silicon on insulator; nanoscale silicon waveguides; nonlinear effects; nonlinear frequency chirp; optical beam modulation; optical waveguides; pulse repetition rate; sinusoidal modulation elements; size 2 mm; terahertz rate pulse train generation; time 62 fs; ultrahigh rate pulse train; Dispersion; Modulation; Nonlinear optics; Optical pulses; Optical waveguides; Silicon; Ultrafast optics;
Conference_Titel :
Multimedia Technology (ICMT), 2010 International Conference on
Conference_Location :
Ningbo
Print_ISBN :
978-1-4244-7871-2
DOI :
10.1109/ICMULT.2010.5629793
