Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2007-10-16
2007-10-16
Sedighian, M. R. (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S071000, C398S070000, C398S002000, C398S005000
Reexamination Certificate
active
10721712
ABSTRACT:
A self-healing WDM (Wavelength Division Multiplexing)-PON (Passive Optical Network) system is disclosed and includes a CO (Central Office), a RN (Remote Node) and a plurality of subscriber units. The system includes a trunk working fiber and a trunk protection fiber for connecting the CO with the RN, a distribution working fiber, and a distribution protection fiber for connecting the RN with the subscriber units. The CO is connected to the trunk working fiber and the trunk protection fiber, and contains an optical switching unit switched when an error or communication failure occurs, an upstream working optical receiver and an upstream protection optical receiver for receiving upstream data, and a downstream working light source and a downstream protection light source for transmitting downstream data. Each subscriber unit is connected to the distribution working fiber and the distribution protection fiber, and contains an optical switching unit switched when an error or communication failure occurs, a downstream working optical receiver and a downstream protection optical receiver for receiving downstream data, and an upstream working light source and an upstream protection light source for transmitting downstream data.
REFERENCES:
patent: 4306313 (1981-12-01), Baldwin
patent: 5241610 (1993-08-01), Labiche et al.
patent: 5539564 (1996-07-01), Kumozaki et al.
patent: 6324318 (2001-11-01), Suzuki
patent: 6975586 (2005-12-01), Yoshimura
patent: 1338832 (2002-03-01), None
patent: 1041852 (2000-10-01), None
patent: WO 99/44317 (1999-09-01), None
Hwang Seong-Taek
Jung Dae-Kwang
Oh Yun-Je
Cha & Reiter L.L.C.
Samsung Electronics Co,. Ltd.
Sedighian M. R.
LandOfFree
Self-healing wavelength division multiplexing-passive... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-healing wavelength division multiplexing-passive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-healing wavelength division multiplexing-passive... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3901931