Free-space optical signal switch arrangement

Details Free-space optical signal switch arrangement Free-space optical signal switch arrangement

1997-12-05

1999-12-14

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Switch

385 16, 385 46, 385 33, G02B 626

Patent

active

060028181

ABSTRACT:
A free-space N by M, where N and M>1, optical signal switch (OXC) requires only transmitter beam steering for controlling to which receiver an optical signal from a transmitter is directed. In a preferred embodiment the transmitters handle single mode optical signals and the receivers handle multimode optical signals. The OXC may optionally include a fixed optical unit implemented using either a single fixed shared lens or a plurality of M optical elements for further directing each of the M optical signals to their respective receivers.

REFERENCES:
patent: 5037173 (1991-08-01), Sampsell et al.
patent: 5440654 (1995-08-01), Lambert, Jr.
patent: 5524153 (1996-06-01), Laor
patent: 5621829 (1997-04-01), Ford

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