Optical communications – Transmitter and receiver system – Passive system
Reexamination Certificate
2011-03-08
2011-03-08
Li, Shi K (Department: 2613)
Optical communications
Transmitter and receiver system
Passive system
Reexamination Certificate
active
07903979
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.
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Kim Hyun Deok
Lee Chang Hee
Blakely , Sokoloff, Taylor & Zafman LLP
Korea Advanced Institute of Science and Technology
Li Shi K
LandOfFree
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