Optical switching modules and systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 2, 2002
Grant Date -
N/A
app pub date -
Nov 16, 2000
filing date -
Nov 16, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical switching system employing switching modules. Each module comprises (a) a source channel, (b) a transmitting element, (c) a receiving element, and (d) a destination channel. The transmitting element directs the source channel signal to a destination channel. The transmitting element includes an initial beam deflector and a beam deflection amplifier. The receiving element includes a beam deflection compressor and a beam aligner. One embodiment of the initial deflector is a pair of focusing lenses, one of which is displaced by a piezoelectric actuator. When one lens is displaced a distance d, the output light beam has a deflection angle .alpha.=(f.sub.1 +f.sub.2)/f.sub.2. The beam deflection amplifier multiplies the small angle .alpha. by a transfer function F to result in a beam with a deflection angle F.alpha.. The receiving element is the transmitting element in reverse. The first system configuration connects a single channel to one of a number of channels. The second system configuration connects a group of M channels with another group of N channels. The third system configuration cross-connects N channels in an arbitrary manner.
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