A measurement of carrier recovery time in semiconductor optical amplifiers (SOAs) based on dual pumps four-wave
mixing (FWM) is presented. The results show the carrier time is 91 ps, 79 ps and 63 ps at 120 mA, 180 mA and 240 mA,
respectively, which agree to our expectation. The experimental results show the conversion efficiency keeps constant
when the spacing of the two pumps varies within a small range.
We demonstrate an all-optical continuously tunable delay line based on wavelength conversion in semiconductor optical
amplifier (SOA), and group-velocity dispersion (GVD) in dispersion-compensating fiber (DCF). The system operates,
near 1550 nm, with a nonreturn-to-zero (NRZ) pattern at 10 Gb/s. The maximal delay up to 2700 ps is observed. The
scheme achieves continuous control of a wide range of delays, wide signal bandwidth, nearly no pulse broadening and
very little spectral distortion.
Monocular Vision is widely used in mobile robot's motion control for its simple structure and easy using. An integrated
description to distinguish and tracking the specified color targets dynamically and precisely by the Monocular Vision
based on the imaging principle is the major topic of the paper. The mainline is accordance with the mechanisms of visual
processing strictly, including the pretreatment and recognition processes. Specially, the color models are utilized to
decrease the influence of the illumination in the paper. Some applied algorithms based on the practical application are
used for image segmentation and clustering. After recognizing the target, however the monocular camera can't get depth
information directly, 3D Reconstruction Principle is used to calculate the distance and direction from robot to target. To
emend monocular camera reading, the laser is used after vision measuring. At last, a vision servo system is designed to
realize the robot's dynamic tracking to the moving target.