Polarization scrambler and optical network using the same

Details Polarization scrambler and optical network using the same Polarization scrambler and optical network using the same

2006-09-12

2006-09-12

Singh, Dalzid (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S147000, C398S149000, C398S152000

Reexamination Certificate

active

07106970

ABSTRACT:
To generate light with the degree of polarization zeroed and the spread of an optical spectrum suppressed even with temporal overlapping between optical pulses each of which is polarized orthogonally to the succeeding pulse, a polarization scrambler includes an optical pulse generator that generates optical pulses with an intensity waveform repetition period T/2 and an electrical field repetition period T in which the same intensity waveform is repeated every repetition period T/2 and in which phase is inverted every repetition period T/2, and an orthogonal polarization delay unit which receives each of the optical pulses, separates the optical pulse into two optical pulses with orthogonal states of polarization, and relatively shifts the temporal position of one of the two optical pulses from that of the other optical pulse by (2n−1)T/4 (n is a natural number) to generate light in which each pulse is polarized orthogonally to a succeeding pulse.

REFERENCES:
patent: 6081355 (2000-06-01), Sharma et al.
patent: 6104515 (2000-08-01), Cao
patent: 6137925 (2000-10-01), Stimple et al.
patent: 6396575 (2002-05-01), Holland
patent: 6483620 (2002-11-01), Epworth et al.
patent: 6607313 (2003-08-01), Farries et al.
patent: 6646774 (2003-11-01), Willner et al.
patent: 6778782 (2004-08-01), Watley et al.
patent: 6959152 (2005-10-01), Fujiwara et al.
patent: 2003/0175034 (2003-09-01), Noe
patent: 01113735 (1989-05-01), None
patent: 09008742 (1997-01-01), None
patent: 09326758 (1997-12-01), None
patent: 09326767 (1997-12-01), None
patent: 11239099 (1999-08-01), None
patent: 2000156672 (2000-06-01), None
patent: 2000162547 (2000-06-01), None
patent: 2000196523 (2000-07-01), None
Z. Pan et al.,Intra-Bit Polarization Diversity Modulation for PMD Mitigation, Optical Communication, 27thEuropean Conference, Sep. 2001 (ECOC '01), pp. 450-451, XP010583465.
G. Marone et al.,Polarisation Independent Detection By Synchronous Intra-Bit Polarization Switching in Optical Coherent Systems, IEEE International Conference on Communications, Apr. 1990, vol. 4, pp. 1658-1662, XP000146063.
N. Caponio et al.,Demonstration of Polarisation Independent Coherent Transmission by Synchronous Intra-Bit Polarisation Spreading, IEEE Proceedings of the International Conference on Communications, vol. 1, Jun. 1991, pp. 343-347, XP010044119.
F. Heismann et al.,Electrooptic Polarization Scramblers for Optically Amplified Long-Haul Transmission Systems, IEEE Photonics Technology Letters, vol. 6, No. 9, Sep. 1994, pp. 1156-1158.
Max Born et al.,Principles of Optics, Electromagnetic Theory of Propagation, Interference and Diffraction of Light, 4thEdition, London, Pergamon Press, 1970, Chapter 10.8, pp. 544-549.
Alan D. Kersey et al.,Analysis of Input-Polarization-Induced Phase Noise in Interferometric Fiber-Optic Sensors and its Reduction Using Polarization Scrambling, Journal of Lightwave Technology, vol. 8, No. 6, Jun. 1990, pp. 838-845.
M.G. Taylor et al.,Improvement in Performance of Long Haul EDFA Link Using High Frequency Polarisation Modulation, Electronic Letters, vol. 30, No. 10, May 12, 1994, pp. 805-806.
N.S. Bergano et al.,Bit-synchronous Polarisation and Phase Modulation Scheme for Improving the Performance of Optical Amplifier Transmission Systems, Electronic Letters, vol. 32, No. 1, Jan. 4, 1996, pp. 52-54.
Masamichi Fujiwara et al.,Novel Polarization Scrambling Technique for Carrier-Distributed WDM Networks, Sep. 12, 2002.
K.I. Suzuki et al.,Unrepeated 40Gbit/s RZ Signal Transmission over 240km conventional Singlemode Fibre, Electronic Letters, vol. 34, No. 8, Apr. 16, 1998, pp. 799-800.
Yutaka Miyamoto et al.,Optical Modulation Format for High-Capacity System with Ultra-High Speed Channels, OECC/IOOC 2001 Conference Incorporating ACOFT, Jul. 2001, pp. 172-175.

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