Aiming at fabrication of complex microstructures and micro-patterns, a kind of femtosecond laser micromachining technology based on the BMP image edge tracing w
An optical frequency shift keying(FSK) transmitter performed by the cross gain modulation(XGM) in a semiconductor optical amplifier(SOA) is used in an optical l
A method of measuring the velocity of fast moving object by charge coupled device(CCD) shadow photograph system is developed.This system consists of high resolu