Accession Number : ADA318135

Title :   Optoelectronic MQW Devices and Systems for Application in Optically Controlled Millimeter-Wave Oscillators.

Descriptive Note : Final technical rept. May 92-Dec 95,

Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE

Personal Author(s) : Bhattacharya, P. ; Haddad, G. I. ; Singh, J.

PDF Url : ADA318135

Report Date : OCT 1996

Pagination or Media Count : 169

Abstract : The objective of this program was the realization of optically controlled millimeter wave and microwave GaAs and InP based circuits. The primary goal was the development of heterojunction bipolar transistors (HBTs) with the ability to be controlled optically. Of particular interest is the ability to convert a microwave signal modulated onto an optical carrier into an electrical signal which in turn will be used to injection lock a microwave oscillator. This optically injection locked oscillator has application to optically implemented control of phased array antenna systems. This report documents significant device developments such as a high frequency, discrete device for injection locking (lnP based MODFET with fmax approx. 300 GHz; GaAs based HBTs with fmax approx. 90GHz; lnP based HBTs with fmax approx. 110 GHz), an Indium-Tin-Oxide (ITO) transparent ohmic contact technology, a high speed Barrier Reservoir and Quantum Well Electron Transport (BRAQWET) modulator (17 GHz bandwidth in GaAs based devices), and monolithically integrated oscillator circuits with guided wave optical injection with tuning range of 100 MHz injection locked at 14 GHz

Descriptors :   *ELECTROOPTICS, *QUANTUM WELLS, ELECTRON TRANSPORT, GALLIUM ARSENIDES, HETEROJUNCTIONS, WAVEGUIDES, INTEGRATED CIRCUITS, INDIUM PHOSPHIDES, ANTENNA ARRAYS, MILLIMETER WAVE EQUIPMENT, PHASED ARRAYS, BIPOLAR TRANSISTORS, ELECTRIC CONTACTS, MICROWAVE OSCILLATORS, LOCKING(ELECTRONICS).

Subject Categories : Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE