Resonant enhanced modulator (REM)

Optical: systems and elements – Optical modulator – Light wave temporal modulation

Reexamination Certificate

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Details

C359S237000, C359S245000, C398S183000, C398S188000

Reexamination Certificate

active

06744548

ABSTRACT:

FIELD OF INVENTION
The present invention relates generally to digital communications and networking technologies and analog technologies such as radar and particularly to modulator components therefor.
BACKGROUND OF INVENTION
It is an object of the present invention to provide advanced modulators whose high efficiency will permit superior digital telecommunications systems to be developed and commercialized. It is further an object of the present invention to provide advanced modulators whose high efficiency; and small size and weight, will enable radar imaging techniques to be deployed more widely and more flexibly in support of operations. It is a further object of the present invention that these modulator components permit the received radar return signal to be acquired directly, eliminating the need for amplification. It is further an object of the present invention that the receive array circuitry be integrated and packaged in a single compact receive module.
SUMMARY OF INVENTION
A modulator including: a plurality of branches; first and second RF electrodes; a first plurality of RF delay elements coupled to the first RF electrode and a second plurality of RF delay elements coupled to the second electrode; and, a plurality of electro-optic resonant elements each being respectively coupled for RF frequency energy exchange with a corresponding one of the RF delay elements and coupled for optical frequency electromagnetic energy exchange to at least one of the branches.


REFERENCES:
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patent: 6009115 (1999-12-01), Ho
patent: 6052495 (2000-04-01), Little et al.
patent: 6078605 (2000-06-01), Little et al.
patent: 6175446 (2001-01-01), Alphonse
patent: 6198854 (2001-03-01), Takagi
“General IIR Optical Filter Design for WDM Applications Using All-Pass Filters”, C.K. Madsen, Journal of Lightwave Technology, vol. 18, No. 6, Jun. 2000, IEEE, pp. 860-868.
“Compact Microring Notch Filters”, P.P. Absi et al., IEEE Photonics Technology Letters, vol. 12, No. 4, Apr. 2000, pp. 398-399.

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