Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2007-05-01
2007-05-01
Mack, Ricky (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S237000, C359S279000, C385S002000, C385S003000, C385S014000
Reexamination Certificate
active
11223553
ABSTRACT:
An optical external modulator includes an optical waveguide having a first interferometer section and a second interferometer section formed on an electro-optic substrate. An electrode structure disposed on the substrate transmits an RF drive signal that is applied to the first and second interferometer sections in series. A reflector optically coupled to the substrate redirects light away from the first interferometer section to the second interferometer section and provides an optical fold region that introduces an optical time delay between the first and second interferometer sections. The optical time delay is used for at least partially compensating for a velocity mismatch between the light and the RF drive signal.
REFERENCES:
patent: 4505587 (1985-03-01), Haus et al.
patent: 5101450 (1992-03-01), Olshansky
patent: 5148503 (1992-09-01), Skeie
patent: 5161044 (1992-11-01), Nazarathy et al.
patent: 5168534 (1992-12-01), McBrien et al.
patent: 5249243 (1993-09-01), Skeie
patent: 5835212 (1998-11-01), Kissa et al.
patent: 5886807 (1999-03-01), Cummings
patent: 5956171 (1999-09-01), Dennis et al.
patent: 6016198 (2000-01-01), Burns et al.
patent: 6038354 (2000-03-01), Sato et al.
patent: 6091864 (2000-07-01), Hofmeister
patent: 6192167 (2001-02-01), Kissa et al.
patent: 6243516 (2001-06-01), Seino
patent: 6304685 (2001-10-01), Burns
patent: 6341184 (2002-01-01), Ho et al.
patent: 6522793 (2003-02-01), Szilagyi et al.
patent: 6535320 (2003-03-01), Burns et al.
patent: 6580840 (2003-06-01), McBrien et al.
patent: 6583917 (2003-06-01), Melloni et al.
patent: 6616353 (2003-09-01), Helkey
patent: 6647158 (2003-11-01), Betts et al.
patent: 6687451 (2004-02-01), Sikora
patent: 6721081 (2004-04-01), Mauro et al.
patent: 6781741 (2004-08-01), Uesaka
patent: 6785434 (2004-08-01), Castoldi et al.
patent: 6862387 (2005-03-01), Howerton et al.
patent: 2002/0063919 (2002-05-01), Kovar et al.
patent: 2003/0175036 (2003-09-01), Mamyshev et al.
patent: 2003/0175037 (2003-09-01), Kimmitt et al.
patent: 2004/0184755 (2004-09-01), Sugiyama et al.
patent: 0496298 (1992-06-01), None
W. K. Burns, et al., “Broad-band reflection traveling-wave LiNbO3 modulator,” IEEE Photonics Technology Letters, vol. 10, pp. 805-806, 1998.
W. K. Burns, et al., “Broad-band Unamplified optical link with RF gain using a LiNbO3 modulator,” IEEE Photonics Technology Letters, vol. 11, pp 1656-1658, 1999.
G. E. Betts, et al., “Microwave analog optical links using suboctave linerized modulators,” IEEE Photonics Technology Letters, vol. 8, pp. 1273-1275, 1996.
G. E. Betts, et al., “Optical analog link using a linerized modulator,” Proceedings of the Annual Meeting of the IEEE Laser and Electro-optic Society, paper IO4.3, pp. 278-279, 1994.
D. J. M. Sabido, et al., “Improving the dynamic range of a coherent AM analog optical link using a cascaded linearized modulator,” IEEE Photonics Technology Letters, vol. 7, pp. 813-815, 1995.
V. Kaman, et al., “Integrated tandem traveling-wave electroabsorption modulators for >100 Gbit/s OTDM applications,” IEEE Photonics Technology Letters, vol. 12, pp. 1471-1473, 2000.
B. Mason, et al., “40-Gb/s tandem electroabsorption modulator,” IEEE Photonics Technology Letters, vol. 14, pp. 27-29, 2002.
J. C. Cartledge, “Optimum operating points for electroabsorption modulators in 10 gb/s transmission systems using nondispersion shifted fiber,” IEEE Journal of Lightwave Technology, vol. 16, pp. 349-357, 1998.
D. Penninckx, et al., “Simple method to find optimum operating point of an integrated laser modulator for a propagation over a standard dispersive fibre,” Proceedings of the 22ndEuropean Conference on Optical Communication, paper TuP.21, pp. 301-304, 1996.
W.K. Burns, “Linearized Optical Modulator with Fifth Order Correction,” IEEE Journal of Lightwave Technology, vol. 13, pp. 1724-1727, 1995.
Wooten et al., “A Review of Lithium Niobate Modulators for Fiber-Optic Communications Systems,” IEEE Journal of Selected Topics in Quantum Electronics, vol. 6, No. 1, pp. 69-82 Jan./Feb. 2000.
M.M. Howerton et al., “Subvolt Broadband Lithium Niobate Modulators”, NRL review, 2002, Optical Sciences.
J.X. Chen, et al., “Tunable Lithium Niobate Waveguide Loop,” IEEE Photonics Technology Letters, vol. 16, No.9, Sep. 2004, pp. 2090-2092.
Marc Currie, “Optical Quantization of Microwave Signals via Distributed Phase Modulation,” IEEE Journal of Lightwave Technology, vol. 23, No. 2, Feb. 2005, pp. 827-833.
Finch Andrew
Kissa Karl
McBrien Gregory J.
Munks Timothy C.
Wooten Ed
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
JDS Uniphase Corporation
Mack Ricky
Tra Tuyen
LandOfFree
Optical external 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 Optical external modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical external modulator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3809194