High speed light modulation
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United States of America Patent
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May 11, 1993
Grant Date -
N/A
app pub date -
Nov 12, 1991
filing date -
Nov 12, 1991
priority date (Note) -
Expired
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Abstract
A device for modulating light, wherein a layer of material having a superconducting state is placed in the optical path of a light source and is switched between transparent, non-superconducting and non-transparent, superconducting states by a modulation circuit, thereby providing optical data modulation. A cooling device is provided to maintain the layer of material in its superconducting state. The light source is maintained at a constant optical output which reduces spectral dispersion.
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