Tunable RF-lightwave modulator

Optical waveguides – Temporal optical modulation within an optical waveguide

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C385S002000, C385S014000, C385S040000

Reexamination Certificate

active

10735070

ABSTRACT:
The present invention provides a RF-lightwave modulator with improved efficiency by making use of a broken loop resonator having a gap therein. In the present invention a RF input signal is coupled into a broken loop resonator, thereby producing a RF output signal. An optical modulator connected across the gap receives the RF output signal and modulates a lightwave with the RF output signal to produce a RF modulated lightwave. Because the optical modulator is connected across the gap in the broken loop resonator, the voltage of the RF output signal applied to the optical modulator will be greater than the voltage of the RF input signal applied to the broken loop resonator.

REFERENCES:
patent: 5166991 (1992-11-01), Jaeger et al.
patent: 5459800 (1995-10-01), Enokihara et al.
patent: 5787211 (1998-07-01), Gopalakrishnan
patent: 6504640 (2003-01-01), Gopalakrishnan
Hong, J., et al., “Theory and Experiment of Novel Microstrip Slow-Wave Open-Loop Resonator Filters,”IEEE Transactions on Microwave Theory and Techniques, vol. 45, No. 12, pp. 2358-2365 (Dec. 1997).
Izutsu, M., “Photonic Technologies for Millimeter-Wave Engineering ,”IEEE Digest, pp. 125-128 (1998), no month.
Kawanishi, T., et al., “Design of LiNbO3Optical Modulator with an Asymmetric Resonant Structure,”IEICE Trans. Electron., vol. E85-C, No. 1, pp. 150-155 (Jan. 2002).
Kawanishi, T., et al., “LiNbO3Resonant-Type Optical Modulator with Double-Stub Structure,”Electronics Letters, vol. 37, No. 20, pp. 1244-1246 (Sep. 27, 2001).
Krähenbühl, R., et al., “Investigations on Short-Path-Length High-Speed Optical Modulators in LiNbO3with Resonant-Type Electrodes,”Journal of Lightwave Technology, vol. 19, No. 9, pp. 1287-1297 (Sep. 2001).
Sagawa, M., et al., “Miniaturized Hairpin Resonator Filters and Their Application to Receiver Front-End MIC's,”IEEE Transactions on Microwave Theory and Techniques, vol. 37, No. 12, pp. 1991-1997 (Dec. 1989).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Tunable RF-lightwave modulator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tunable RF-lightwave modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunable RF-lightwave modulator will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3871092

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.