Modulator for a light beam
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United States of America Patent
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-
Sep 12, 1995
Grant Date -
N/A
app pub date -
Nov 18, 1993
filing date -
Nov 20, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A light modulator for modulating a light beam which emerges in the shape of a cone from an optical fiber. The modulator has a mirror which can be brought into at least two different states. In the one of these states, the light diverges in such a way that only a small portion returns back into the fiber. In the other of these states, however, more of the light returns back into the fiber. In one embodiment, the mirror is embodied as an etched semiconductor foil and is deformed by the force of a variable electrostatic field between the foil and an electrode which has been placed on a substrate.
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