TY - CONF
TI - Dual bump wave mixing in semiconductor optical amplifiers: Performance
enhancement with long amplifiers
AU - Tomkos, I
AU - Zacharopoulos, I
AU - Syvridis, D
PY - 1999
SP - 240-248
PB - SPIE - INT SOC OPTICAL ENGINEERING
T2 - ULTRAFAST PHENOMENA IN SEMICONDUCTORS III
TODO - 10.1117/12.349301
TODO - optical communications; nonlinear optics; four wave mixing;
semiconductor optical amplifier
TODO - We demonstrate experimentally the improvement of the performance of the
dual pump wave mixing scheme in semiconductor optical amplifiers, using
long amplifier chips and high optical pump powers. The optical
amplifiers used in the experiment had a ridge waveguide structure with
bulk active layer and antireflective-coated angled facets. Measurements
of the conversion efficiency and SBR as a function of wavelength shift
are presented for a wavelength shift of more than 40nm. The above
measurements are carried out for three amplifier lengths (500 mu m, 1000
mu m, and 1500 mu m) and for different levels of the optical power of
the two pumps. It will be shown that an increase in the amplifier length
from 500 mu m to 1500 mu m results to an increase of more than 25 dB for
the efficiency and more than 20 dB for the SBR. This improvement
combined with the inherent advantages of the dual pump scheme (almost
constant SBR and high efficiency for large wavelength shifts) results in
a highly performing wavelength converter/phase conjugator, suitable for
many applications.
ER -