Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2007-11-06
2007-11-06
Phan, Hanh (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S182000, C398S188000, C398S189000, C398S191000, C398S192000, C398S194000, C398S198000, C398S161000, C398S102000, C398S082000, C398S079000, C398S158000, C398S159000, C398S185000, C398S186000, C398S187000
Reexamination Certificate
active
10674722
ABSTRACT:
A method for transmitting digital data includes splitting a coherent optical carrier having a subcarrier into mutually coherent optical carriers, producing corresponding sequences of phase shifts in each of the mutually coherent optical carriers, and then, interfering the mutually coherent optical carriers. The interfering produces an output optical carrier whose subcarrier has modulated inphase and quadrature components with a corresponding sequence of pairs of values. The pairs of values of the modulated inphase and quadrature phase components produced by the interfering correspond to a sequence of coordinate pairs for the signal points the 4-PSK 2D, 16-QAM 2D, or 16-PSK 2D constellation.
REFERENCES:
patent: 2003/0058504 (2003-03-01), Cho et al.
U.S. Appl. No. 10/443,328, filed May 22, 2003, A. Leven.
U.S. Appl. No. 10/133,469, filed Apr. 26, 2002, Y.K. Chen.
Jemison, W.D., et al., “Microwave Photonic Vector Modulator for High-Speed Wireless Digital Communications,” IEEE Microwave and Wireless Components Letters, vol. 12, No. 4, pp. 125-127, Apr. 2002.
McPherson, D.S., et al., “Vector Modulator for W-Band Software Radar Techniques,” IEEE Transactions on Microwave Theory and Techniques, vol. 49, No. 8, pp. 1451-1461, Aug. 2001.
Chandramouli, S., et al., “Direct Carrier Modulation for Wireless Digital Communications Using an Improved Microwave-Photonic Vector Modulator(MPVM)Approach,” IEEE MTT-S Digest, pp. 1293-1296, May 2002.
Leven, A., et al., “Microwave Photonic Vector Modulator,” Lasers and Electro-Optics Society, 2003. LEOS 2003, the 16thAnnual Meeting of the IEEE, vol. 2, pp. 935-936, 2003.
Walker, R.G., “High-Speed III-V Semiconductor Intensity Modulators,” IEEE Journal of Quantum Electronics, vol. 27, No. 3, pp. 654-667, May. 1991.
Leuthold, J., et al., “Multimode Interference Couplers with Tunable Power Splitting Ratios,” Journal of Lightwave Technology, vol. 19, No. 5, pp. 700-707, May 2001.
Tucker, R.s., et al., “Optical Time-Division Multiplexing For Very High Bit-Rate Transmission,” Journal of Lightwave Technology, vol. 6, No. 11, pp. 1737-1749, Nov. 1988.
Chen Young-Kai
Leven Andreas
Lucent Technologies - Inc.
McCabe John F.
Phan Hanh
LandOfFree
High speed modulation of optical subcarriers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High speed modulation of optical subcarriers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed modulation of optical subcarriers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3866129