Accession Number : ADA262842


Title :   Optoelectronic Switches and Applications


Descriptive Note : Professional paper


Corporate Author : NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA


Personal Author(s) : Albares, D J ; Chang, C T ; Imthurn, G P ; Garcia, G A ; Major, R W ; Taylor, M J ; Sun, C K


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a262842.pdf


Report Date : 09 Nov 1992


Pagination or Media Count : 6


Abstract : Photoactivated or optoelectronic (OE) switches whose resistance is controlled by light are emerging as attractive and often unique devices for sampling and control of electrical signals, complementing advanced electronics. We review the characteristics of these switches and their potential application to ultra high speed time division multiplexing (TDM) and to switching of microwave (mw) signals such as for reconfiguring antennas and for the sampling of a coherent radar clock. OE switches are metal-semiconductor-metal structures whose behavior can range from photoconductive to depletion-layer photodiode depending upon the semiconductor, the type of contacts, and the activating light intensity. Attractive features include high speed ( 50 ps), modest on-chip power dissipation, signal-control isolation, and compatibility with microelectronics and with mw transmission lines. Furthermore the use of optical fibers to transmit activating light to the switches, yields complete switch isolation, absence of pickup, excellent timing control, and low jitter. The present work concentrates on Si and InP switches and is limited to laser diode sources for practicality. To first approximation, a switch can be treated as a variable resistor in parallel with a capacitance.


Descriptors :   *ELECTROOPTICS , *LIGHT TRANSMISSION , *ANTENNAS , *ELECTRONIC SWITCHES , *OPTICAL SWITCHING , DIODES , FIBER OPTICS , CONTROL , ELECTRONICS , COMPUTERS , LIGHT , COMPATIBILITY , TRANSMISSION LINES , TIME DIVISION MULTIPLEXING , MICROELECTRONICS , SILICON , ELECTRODES , SIGNALS , LASERS , SEMICONDUCTORS , RADAR , MICROWAVES , VARIABLE RESISTORS , DIVISION , COHERENT RADAR , JITTER , PHOTOCONDUCTIVITY , RESISTORS , CAPACITANCE , SWITCHES , AMPLIFIERS , PHOTODIODES , SWITCHING , MULTIPLEXING , INDIUM PHOSPHIDES , RADAR SIGNALS , BEHAVIOR , DISSIPATION , ISOLATION , INTENSITY , CLOCKS , METALS , REPRINTS , FIBERS


Subject Categories : Electrooptical and Optoelectronic Devices
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE