Title :
Cross-phase modulation efficiency in offset quantum-well and centered quantum-well semiconductor optical amplifiers
Author :
M.L. Masanovic;V. Lal;E.J. Skogen;J.S. Barton;J.A. Summers;J.A. Raring;L.A. Coldren;D.J. Blumenthal
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of California Santa Barbara, CA, USA
Abstract :
We conduct an experimental study of cross-phase modulation efficiency for semiconductor optical amplifiers with two different active regions-offset quantum-well (OQW) stack and centered quantum-well (CQW) stack. OQW devices exhibit less than 100/spl deg/ phase change, whereas CQW devices are 60% more efficient for the same pump input power, with more than 200/spl deg/ phase change possible. The input wavelength degrades the phase change significantly outside the 30-nm gain bandwidth window.
Keywords :
"Quantum wells","Semiconductor optical amplifiers","Optical wavelength conversion","Nonlinear optics","Optical pumping","Optical filters","Optical interferometry","Optical modulation","Optical saturation","Optical refraction"
Journal_Title :
IEEE Photonics Technology Letters
DOI :
10.1109/LPT.2005.858162
