Optical code division multiplexing transmission/reception...

Details Optical code division multiplexing transmission/reception... Optical code division multiplexing transmission/reception...

2006-11-22

2010-06-29

Wang, Quan-Zhen (Department: 2613)

Optical communications

Multiplex

Code division multiplexing

Reexamination Certificate

active

07747170

ABSTRACT:
A transmission unit comprises an optical pulse train generation unit, first channel encoded optical pulse signal generation unit, second channel encoded optical pulse signal generation unit, third channel encoded optical pulse signal generation unit, and fourth channel encoded optical pulse signal generation unit; the second and fourth channels further comprise polarization controllers respectively. By means of these polarization controllers, a polarization control step is executed in which the planes of polarization of first encoded optical pulse signals of the second and fourth channels are rotated by 90°. By executing the polarization control step, the directions of the planes of polarization of the first decoded optical pulse signals of adjacent channels in the reception unit can be caused to be mutually orthogonal.

REFERENCES:
patent: 6459518 (2002-10-01), Suzuki et al.
patent: 7421202 (2008-09-01), Hsu
patent: 2000-209186 (2000-07-01), None
patent: 2004-253931 (2004-09-01), None
patent: 2005-159453 (2005-06-01), None
“Enhanced of Transmission Data Rates in Incoherent FO-CDMA Systems”, X. Wang et al., OECC 2000, Technical Digest, Jul. 2000, 14A2-5, pp. 458-459.
Office Action from corresponding Japanese Patent Application 2005-340485 mailed Dec. 1, 2009.

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