The High Speed Optoelectronic Isolator Design in Laser Radar

Abstract

Laser radar is a kind of active modern optical equipment, It’s the extension of traditional radio or microwave radar to optical frequency. Because the probe beam wavelength shortening and directional strengthen, so that the laser radar has very strong space, time resolution and high detection sensitivity and other advantages, Laser radar has been widely applied in the atmosphere, ocean, land and in other target detection. Optoelectronic isolator is usually used in electronic circuit device, but the ns order of magnitude of the high-speed triggering and synchronization is more difficult, while the synchronization of laser radar and laser communication is in the order of ns. In order to solve this problem, this paper presents a high speed optical trigger, which can realize the high speed synchronization of emission laser and receiving circuit in laser radar, and delay time is within 150ns, that can provide protection to obtain synchronous valid data.