Protocol and line-rate transparent WDM passive optical network

Details Protocol and line-rate transparent WDM passive optical network Protocol and line-rate transparent WDM passive optical network

2008-06-10

2008-06-10

Chan, Jason (Department: 2613)

Optical communications

Multiplex

Broadcast and distribution system

C398S170000

Reexamination Certificate

active

07386235

ABSTRACT:
The present invention provides a method, apparatus and system for a protocol and line-rate transparent WDM passive optical network architecture that scales in terms of bandwidth and number of ONUs. Both an included optical line terminal and each of a plurality of ONUs use substantially the same reflective modulators to modulate respective wavelength channels to impart data thereto. In various embodiments of the present invention, the reflective modulators are composed of a SOA having on one facet a pigtailed fiber and the other facet coated with a highly reflective coating. In the WDM passive optical network of the present invention, the ONUs each comprises a separate wavelength for communication in the upstream and the downstream directions. The present invention allows for all-passive components to be placed in the field, thus, requiring no power between a central office and a user or subscriber's premises.

REFERENCES:
patent: 5699176 (1997-12-01), Cohen
patent: 5880865 (1999-03-01), Lu et al.
patent: 6304350 (2001-10-01), Doerr et al.
patent: 2002/0145780 (2002-10-01), Frigo et al.
patent: 2002/0186439 (2002-12-01), Buabbud et al.
patent: 2002/0196491 (2002-12-01), Deng et al.
patent: 2003/0118280 (2003-06-01), Miyazaki et al.
patent: 2004/0208233 (2004-10-01), Dafesh
patent: 2005/0074240 (2005-04-01), Jung et al.
patent: 2005/0163147 (2005-07-01), Buabbud et al.
patent: 2005/0163503 (2005-07-01), Lee et al.
patent: 2005/0226640 (2005-10-01), Audic et al.
patent: 0 685 948 (1995-12-01), None
patent: 1 418 691 (2004-05-01), None
patent: 2 181 921 (1987-04-01), None
patent: WO 00/74278 (2000-12-01), None
patent: WO 03/010904 (2003-02-01), None
Nicholson G, “Use of a Fibre Loop Reflector as Downstream Receiver and Upstream Modulator in Passive Optical Network”, Electronics Letters, Jun. 7, 1990, vol. 26, No. 12, pp. 827-828, Stevenage, Herts., GB.
Cheng, Steven S. et al., “A Distributed Star Network Architecture for Interoffice Applications”, Journal of Lightwave Technology, vol. LT-4, No. 7, Jul. 1986, pp. 755-758.
European Search Report, European Application No. 04253858.7, Dec. 8, 2004.

Affiliated with

Also associated with

Rating

Protocol and line-rate transparent WDM passive optical network does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Protocol and line-rate transparent WDM passive optical network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protocol and line-rate transparent WDM passive optical network will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2808160