Optical communications – Transmitter and receiver system – Passive system
Reexamination Certificate
2006-09-12
2006-09-12
Payne, David C. (Department: 2613)
Optical communications
Transmitter and receiver system
Passive system
C398S079000, C372S032000, C372S028000
Reexamination Certificate
active
07106974
ABSTRACT:
The present invention discloses a low-cost light source for optical transmission systems and optical networks based on wavelength-division multiplexing (WDM) technology. A light source in accordance with the present invention is implemented by externally injecting a narrow-band incoherent light into a Fabry-Perot laser diode (F-P LD). After injection of narrow-band incoherent light, the output of F-P LD becomes wavelength-selective rather than multi-mode and the output wavelength of F-P LD coincide with the peak wavelength of the injected incoherent light.Multi-channel WDM light sources according to the present invention can be implemented using a single broadband incoherent light source and plurality of F-P LDs. An optical transmission system for upstream signal transmission in an passive optical network using the light source according the present invention is also disclosed.
REFERENCES:
patent: 4563087 (1986-01-01), Bourbin et al.
patent: 5202780 (1993-04-01), Fussanger
patent: 5221983 (1993-06-01), Wagner
patent: 5276543 (1994-01-01), Olshansky
patent: 5321541 (1994-06-01), Cohen
patent: 5436760 (1995-07-01), Nakabayashi
patent: 5440417 (1995-08-01), Chung et al.
patent: 5550666 (1996-08-01), Zirngibl
patent: 5661585 (1997-08-01), Feldman et al.
patent: 5694234 (1997-12-01), Darcie et al.
patent: 5793512 (1998-08-01), Ryu
patent: 5880865 (1999-03-01), Lu et al.
patent: 6097523 (2000-08-01), Boot
patent: 6137611 (2000-10-01), Boivin et al.
patent: 6650840 (2003-11-01), Feldman
patent: 2001/0004290 (2001-06-01), Lee et al.
Kim, Hyun, et al., “A Low-Cost WDM Source With An ASE Injected Fabry-Perot Semiconductor Laser,” IEEE Photonic Technology Letters, pp. 1067-1069, vol. 12, No. 8 (Aug. 2000).
Feldman, Robert D., et al., “An Evaluation of Architectures Incorporating Wavelength Division Multiplexing for Broad-Band Fiber Access,” Journal of Lightwave Technology, vol. 16, No. 9, pp. 1546-1559, (Sep. 1998).
Kim Hyun Deok
Lee Chang Hee
Bacon & Thomas PLLC
Korea Advanced Institute of Science & Technology
Payne David C.
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