Optical: systems and elements – Optical modulator
Patent
1997-08-04
1999-12-07
Ben, Loha
Optical: systems and elements
Optical modulator
359239, 359279, 356350, 385 3, 385 12, G02B 2600, G01C 1972
Patent
active
059993049
ABSTRACT:
A deadband error reducer for a fiber optic gyroscope, which is an offset modulation signal that averages the deadband producing error over the range of the feedback modulation signal provided to the phase modulator. Although the offset modulation signal may be introduced at any of several points in the feedback loop, the offset modulation must approximate a critical amplitude at the phase modulator. If the offset modulation is a signal having segments that are linear with time, the critical amplitude of this signal will be 2.pi..
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Guenter Spahlinger, et al., "Error Compensation via Signal Correlation in High Precision Closed-Loop Fiber Optic Gyros", LITEF GmbH, Development Department, Loerrachestr, 18, 79115 Freiburg, Germany, 218/SPIE vol. 2837, 10 pgs., Aug. 1996.
George A. Pavloth, "Closed-loop Fiber Optic Gyros", Litton Systems, Inc., 46/SPIE vol. 2837, 16 pgs., Aug. 1996.
Bergh Ralph
Dankwort Rudy
Sanders Glen
Strandjord Lee
Ben Loha
Honeywell Inc.
Kau Albert K.
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