Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2006-04-25
2006-04-25
Lee, John D. (Department: 2874)
Optical waveguides
With optical coupler
Switch
C385S001000
Reexamination Certificate
active
07035499
ABSTRACT:
A light beam on a single optic fiber carries time division multiplexed information originating from multiple sensors driven from a single light source. An optical switch apparatus coupled in series between the source and the sensors switches the light beam of the source between ON and OFF states. The switch apparatus includes an electro-optic switch and an acousto-optic switch coupled in series with the electro-optic switch. A controller and drivers for the electro-optic and acousto-optic switches produce in an appropriate time sequence control signals resulting in a desired ON and OFF time of the light beam being switched.
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patent: 5852507 (1998-12-01), Hall
Nakajima, H., Development on Guided-Wave Switch Arrays, IEICE Trans. Electron, Feb. 1999, pp. 297-304, vol. E82, No. 2, Japan.
Kirkendall, et al., Overview of High Performance Fibre-Optic Sensing, Journal of Physics, Sep. 2004, pp. R197-R216, United Kingdom.
Lee John D.
Northrop Grumman Corporation
Patti & Brill LLC
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