Pointable optical transceivers for free space optical communication
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United States of America Patent
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Dec 6, 2005
Grant Date -
Nov 25, 2004
app pub date -
Dec 9, 2003
filing date -
Dec 14, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Optical transceivers include a diffractive optical element (DOE) attached to a surface of a prism or other optical support. The DOE is configured to direct an input optical signal to a planar or curved reflective surface, or receive an output optical signal from the planar or curved reflective surface at angles greater than a critical angle in the prism. In some examples, the optical support includes one or more curved reflective surfaces and the DOE is a hologram. Such optical transceivers include a reflective surface that is rotatable with respect to the DOE, or with respect to a selected communication direction and the DOE for selection of a transmission or reception direction. The optical supports of such optical transceivers can be mounted to a window, and include a reflective region configured to total internally reflect optical signals. Selection of a communication direction is based on a rotation of the rotatable reflective surface.
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