A detailed comparison between conventional image intensifiers and electron bombarded CCD (EBCCD) is conducted. These sensors' advantages and drawbacks are analyzed. EBCCD with transferred electron (TE) photocathode and its application in Laser Illuminated Viewing and Ranging (LIVAR) system are shown in details. The TE Photocathode (TEP) developed by Intevac in 1996 has a demonstrated quantum efficiency of 20% or higher over the spectral range between 0.95 and 1.7 μm. The TEP is coupled directly with a CCD chip in an electron bombarded CCD (EBCCD) configuration. The overall noise figure of the EBCCD camera is close to one, approximately half that of a standard Generation-III image intensifier. The EBCCD eliminates the micro-channel plate (MCP), phosphor screen, and fiber optics, and as a result both improved image quality and increased sensitivity can be obtained in a smaller sized camera. Because of the reduction in the number of image conversions and the significantly greater signal-to-noise performance, an EBCCD has higher contrast and resolution than an ICCD. These characteristics make the EBCCD a good candidate for military, helmet-mounted night-vision systems as well as for covert surveillance applications.
Multiple beam forming is widely used in modern RADAR system, and it can be accomplished at radar radio frequency by using integrated opto-electronics device and optical fiber distribution and time delay network. This paper describes a receiving system of multiple beams by using integrated opto- electronics device, optical fiber distribution network and optical fiber time delay line. When the opto-electronics switch with controllable extinction ratio and optical microwave phase shifter which can make a good control of phase shifting are applied in this system, the complex weight coefficient can be effectively adjusted, and the adaptive multiple beam forming networks can be established. With the optically controlled multiple beam forming technology, the weight and volume of the system can be reduced and the anti- interference ability and stability of temperature be increased. In addition, the channel numbers can also be increased, which is especially beneficial to large phased arrays system.