Thermoplastic Modulator Brassboard.
Final rept. Jun 74-Jun 75,
ENVIRONMENTAL RESEARCH INST OF MICHIGAN ANN ARBOR
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A real-time, two dimensional optical data modulator was constructed at ERIM and delivered to the Air Force Avionics LaboratoriesTEL. This report is divided into two parts. The first part describes the design of the modulator and the second part is an instruction manual. The modulator utilizes electron beam writing on a deformable thin thermoplastic film that is reusable. The real-time thermoplastic modulator was designed for experimental flexibility. The recording plastic layer is reusable. Operating parameters were optimized for coherent optical spectrum analysis of the recorded data. Electronic controls allow for a variation in values selected for electron beam sweep speed, raster size, and thermoplastic temperature. The recording faceplate and electron gun are demountable from the recording envelope. The device described in this report is a versatile two-dimensional real-time modulator having the quality required for coherent optical data processing with a large time-bandwidth product and a storage time having a very large range of variation. It is useful in a variety of applications in its present form and further advancements can be made, particularly in the area of size reduction and increased temporal and spatial bandwidth.
- Electrical and Electronic Equipment