Optical communications – Multiplex – Polarization
Reexamination Certificate
2005-09-20
2010-06-22
Pascal, Leslie (Department: 2613)
Optical communications
Multiplex
Polarization
C398S184000, C398S188000
Reexamination Certificate
active
07742699
ABSTRACT:
Two data signals are subjected to a binary differential phase modulation and transmitted as POLMUX multiplex signals. The types of modulation are selected in such a way that they are orthogonal in relation to each other and do not influence each other during the demodulation of the signals. There is thus no need to regulate the polarization on the receiving side.
REFERENCES:
patent: 2004/0081470 (2004-04-01), Griffin
patent: 2004/0184819 (2004-09-01), Vassilieva et al.
patent: 2005/0286904 (2005-12-01), Calabro et al.
patent: 102 43 141 (2004-04-01), None
patent: 2004028046 (2004-04-01), None
Jin Wang and Joseph M. Kahn, “Conventional DPSK Versus Symmetrical DPSK: Comparison of Dispersion Tolerances” , IEEE Photonics Technology Letters, vol. 16, No. 6, Jun. 2004, pp. 1585-1587.
Aviv Salamon, et al., “Secure Optical Communications Utilizing PSK Modulation, Polarization Multiplexing and Coherent Digital Homodyne Detection with Wavelength and Polarization Agility”, 2003 IEEE Military Communications Conference, MIILCOM 2003, Boston, MA, Oct. 13-16, 2003, vol. 2 of 2, pp. 274-282.
Calabro Stefano
Schmidt Ernst-Dieter
Dickinson Wright PLLC
Nokia Siemens Networks GmbH & Co KG
Pascal Leslie
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