Optical waveguides – Temporal optical modulation within an optical waveguide
Reexamination Certificate
2008-07-22
2008-07-22
Sanghavi, Hemang (Department: 2874)
Optical waveguides
Temporal optical modulation within an optical waveguide
C385S002000, C385S003000
Reexamination Certificate
active
11651824
ABSTRACT:
A novel design for an optical differential quadrature phase shift keying (DQPSK) modulator comprises two intensity modulators in a three-arm interferometer.
REFERENCES:
patent: 6175671 (2001-01-01), Roberts
patent: 2002/0003641 (2002-01-01), Hall et al.
patent: 2003/0053754 (2003-03-01), Doerr
patent: 2004/0184723 (2004-09-01), Chandrasekhar et al.
patent: 2007/0071453 (2007-03-01), Liu et al.
F. Devaux et al. Optical processing with electroabsorption modulators. Optical Fiber Communication Conference and Exhibit, 1998 (OFC '98), Technical Digest, pp. 285-287. Feb. 1998.
U.S. Appl. No. 12/006,194, filed Dec. 31, 2007, Christopher Doerr, et al.
R. Griffin, et al., “Integrated DQPSK Transmitter for Dispersion-Tolerant And Dispersion-Managed DWDM Transmission”,Optical Fiber Communication Conference, Atlanta, GA., 2003, Paper FP6., 2 pages.
K. Higuma, et al. “A Bias Condition Monitor Technique For the Nested Mach-Zehnder Modulator”,IEICE Electronics Express, vol. 3, 2006, pp. 238-242.
L. Zhang et al., “Low-Voltage High-Speed Traveling Way InGaAsP-InP Phase Modulator”,IEEE Photon. Technol. Lett., vol. 16, Aug. 2004, pp. 1831-1833.
H.N. Klein, et al., “1.55 μm Mach-Zehnder Modulators on InP For Optical 40/80 Gbit/s Transmission Networks”,Integrated Photonics Research M, Princeton, NJ., 2006, Paper TuA2.4., pp. 171-173.
R.G. Walker, “High-Speed III-V Semiconductor Intensity Modulators”,IEEE J. Quantum Electron., vol. 27, No. 3, Mar. 1991, pp. 654-667.
H. Kawanishi, et al., “EAM-Integrated DFB Laser Modules With More Than 40 GHz Bandwidth”,IEEE Photon. Technol. Lett., vol. 13, Sep. 2001, pp. 954-956.
I. Kang, “Interferometric Operation Of An Electroabsorption Modulator For PSK Modulation And OOK Modulation With Performance Enhancements”,European Conf. Opt. Comm., Cannes, France, 2006, Paper We3.P.59. 2 pages.
Takahide Sakamoto, et al., “50-Gb/s 16 QAM by a quad-parallel Mach-Zehnder modulator,”European Conference on Optical Communication, paper PD 2.8, Berlin, Sep. 2007, 2 pages.
C.R. Doerr, et al., “Compact EAM-Based InP DQPSK Modulator and Demonstration at 80 Gb/s,” inNational Fiber Optic Engineers Conference, Anaheim, CA, Mar. 25, 2007,OSA Technical Digest Series(CD) (Optical Society of America, 2007), paper PDP33, 3 pages.
C.R. Doerr, et al., “Compact, high-speed, InP DQPSK modulator,”IEEE Photonics Technology Letters, vol. 19, No. 15, (Aug. 1, 2007) pp. 1184-1186.
Inuk Kang, “Phase-shift-keying and on-off-keying with improved performances using electroabsorption modulators with interferometric effects,” Optics Express, vol. 15, No. 4, (Feb. 19, 2007), pp. 1467-1473.
Lucent Technologies - Inc.
Sanghavi Hemang
Stahl Mike
LandOfFree
Compact optical 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 Compact optical modulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact optical modulator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3939515