You are here
True-Time-Delay Implemented with Inversion Channel Technology
Phone: (301) 590-3155
The inversion channel technology is proposed as a means to perform true time delay in optical beam forming network through the implementation of VCSEL arrays and optoelectronic fiber optic links. The phase data will be produced by delaying the optical signal in a waveguide delay line to achieve true time delay. A wide range of delays (up to 100) are achieved using a unique optical waveguide directional coupler switch implemented in the inversion channel technology. The inversion channel technology has produced vertical cavity surface emitting lasers (* 2 mA threshold), vertical cavity resonant detectors (0.6 A/W responsivity), high performance heterostructure field effect transistors (ft > 40 GHz) and waveguide absorption modulators all using a common fabrication sequence. This technology is realized with a single epitaxial growth upon a GaAs substrate, and uses a single set of fabrication steps to realize a monolithic integrated circuit with electronics, emission, detection and modulation capability. These circuits can implement a complete III-V chip set for a phased array system but are also suitable for single chip opto-electronic interfacing using the flip-chip bonding procedure with silicon based processors. In this program the inversion channel transceiver circuits for optoelectronic signal processing modules in a phased array antenna system using fiber optic links as the transmission media will be developed.
* Information listed above is at the time of submission. *