Optical: systems and elements – Optical modulator
Reexamination Certificate
2005-08-09
2005-08-09
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Optical modulator
C359S325000
Reexamination Certificate
active
06927889
ABSTRACT:
The invention relates to a method for the recording and processing of the amplitude and phase of signal waves, whereby a signal source generates a modulated signal wave, which is altered on the way thereof through a transmission medium or through an object as a result of reflection and/or dispersion, received by a receiving device and directly demodulated therein, using a modulation signal which has a well-defined relationship to the modulation of the signal waves, by means of a modulation device without the signal wave carrier and recorded and analysed in relation to the amplitude of the modulated signal wave and phase relationship of the modulation pahse of the signal wave and of the modulation signal. In a sensor, sensitive to the signal waves, in a receiver device, wave energy particles, directly or indirectly generated by means of the signal wave energy in a wagging process, with a wave energy wag matching the modulation signal, are fed to at least two distinguishable groups of receiving elements on the sensor, recorded, optionally amplified and transmitted by at least one read-out output of an output unit, corresponding to at least one of the group of distinguishable receiving elements, in the form of a sum and/or correlation signal.
REFERENCES:
patent: 6825455 (2004-11-01), Schwarte
Schwarte et al, “A New Electrooptical Mixing and Correlating Sensor: Facilities an Applications of the Photonic Mixer Device”,SPIE, vol. 3100, Jan. 1997.
Hanig Richard
Paul & Paul
Sugarman Scott J.
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