Title :
Broad-band wavelength up-conversion of picosecond pulses via four-wave mixing in a quantum-dash waveguide
Author :
Leesti, Bertram ; Zilkie, Aaron J. ; Aitchison, J.Stewart ; Mojahedi, Mohammed ; Wang, Ronghua H. ; Rotter, Thomas J. ; Yang, Chi ; Stintz, Andreas ; Malloy, Kevin J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Ont., Canada
fDate :
5/1/2005 12:00:00 AM
Abstract :
Wavelength up-conversion of 1.6-ps pulses is achieved through four-wave mixing (FWM) in an InAs-InP quantum-dash ridge waveguide laser operating at 1587 nm. The up-conversion efficiency is measured as a function of injection current, for pump-probe detunings in the range 1.8-3.8 THz. The efficiency is found to increase with current up to a point of saturation. The gain at the conjugate wavelength is found to enhance the efficiency. For a detuning of 1.8 THz, an efficiency of -17.6 dB is obtained; this is similar to or higher than reported efficiencies for FWM with continuous-wave signals in quantum dots and dashes, at similar detunings. Further improvement may be obtained through optimization of the pump power.
Keywords :
III-V semiconductors; high-speed optical techniques; indium compounds; laser tuning; multiwave mixing; optical pumping; optical wavelength conversion; optimisation; quantum dot lasers; ridge waveguides; semiconductor optical amplifiers; waveguide lasers; 1.6 ps; 1.8 to 3.8 THz; 1587 nm; InAs-InP; broad-band wavelength up-conversion; four-wave mixing; injection current; pump-probe detunings; quantum-dash ridge waveguide laser; Four-wave mixing; Nonlinear optics; Optical pulses; Optical waveguides; Optical wavelength conversion; Quantum dots; Quantum well lasers; Semiconductor optical amplifiers; Stimulated emission; Waveguide lasers; Nonlinear optics; optical frequency conversion; quantum dots; semiconductor optical amplifiers (SOAs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.844563
