Title :
All-optical signal processing using InP photonic-crystal nanocavity switches
Author :
Yi Yu ; Vukovic, Dragana ; Palushani, Evarist ; Heuck, Mikkel ; Peucheret, Christophe ; Oxenlowe, Leif K. ; Yvind, Kresten ; Mork, Jesper
Author_Institution :
Dept. of Photonics Eng., Tech. Univ. of Denmark, Lyngby, Denmark
Abstract :
In this paper, we present recent progress in experimental characterization of InP photonic-crystal nanocavity switches. Pump-probe measurements on an InP PhC H0 cavity show large-contrast ultrafast switching at low pulse energy. At large pulse energies, a large resonance shift passing across the probe leads to pulse broadening. In addition, high-frequency carrier density oscillations can be induced, leading to pulse splitting. Excellent agreements between simulations and experiments are obtained when employing a carrier rate equation model containing three relaxation times, accounting for the joint effects of fast carrier diffusion, slow surface and bulk recombination. Utilizing the simple InP PhC nanocavity structure, we successfully demonstrate 10-Gb/s RZ-OOK all-optical modulation with low energy consumption.
Keywords :
III-V semiconductors; amplitude shift keying; carrier density; high-speed optical techniques; indium compounds; nanophotonics; optical communication equipment; optical information processing; optical modulation; optical pumping; optical switches; photonic crystals; InP photonic crystal nanocavity switches; RZ-OOK all-optical modulation; all-optical signal processing; bit rate 10 Gbit/s; bulk recombination; energy consumption; fast carrier diffusion; high-frequency carrier density oscillations; low pulse energy; pulse broadening; pulse splitting; pump-probe measurements; resonance shift; slow surface; ultrafast switching; Bit error rate; Cavity resonators; Indium phosphide; Optical switches; Photonics; Probes; all-optical switching; nonlinear optics; photonic crystal;
Conference_Titel :
Transparent Optical Networks (ICTON), 2014 16th International Conference on
Conference_Location :
Graz
DOI :
10.1109/ICTON.2014.6876691
