Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2007-01-09
2007-01-09
Li, Shi K. (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S201000, C398S212000
Reexamination Certificate
active
10173378
ABSTRACT:
An optical vestigial sideband transmitter includes first and second intensity-modulated light sources and a pair of optical splitters. A first and second wavelength combiner receives a portion of the outputs of the first and second intensity-modulated light sources. The first wavelength combiner filters the two modulated signals to generate two vestigial sideband signals and multiplexes them onto a single waveguide such as an optical fiber for output to an optical transmission medium. The second wavelength combiner operates in conjunction with the first wavelength combiner to automatically and precisely regulate the optical wavelengths of the light sources, such that the passband of the first wavelength combiner substantially suppresses the redundant sideband from each modulated signal. After transmission, a vestigial sideband receiver including a wavelength splitter and optical-to-electrical receivers extracts the multiplicity of vestigial sideband signals placing them on separate optical waveguides.
REFERENCES:
patent: 5999300 (1999-12-01), Davies et al.
patent: 6118562 (2000-09-01), Lee et al.
patent: 6262834 (2001-07-01), Nichols et al.
patent: 2003/0058509 (2003-03-01), Webb et al.
patent: 2004/0208583 (2004-10-01), Azadet et al.
patent: 2004/0208644 (2004-10-01), Sirat et al.
patent: 0 715 191 (1996-06-01), None
patent: WO 97/49248 (1997-12-01), None
S. Bigo et al., “5.12 Tbit/s (128×40 Gbit/s WDM) Transmission over 3×100 km of TeraLightTM Fibre”, ECOC 2000.
J. Lee et al., “Multi-Channel Frequency Stabilization Using Wavelength Crossover Properties of Arrayed Waveguide Gating”, 10th Annual Meeting Lasers and Electro-Optics 1997, LEOS '97, Nov. 10-13, 1997.
Brown Carlton D.
Butler David J.
Alcatel
Li Shi K.
Sewell V. Lawrence
Smith Jessica W.
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