Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2007-01-02
2007-01-02
Sedighian, M. R. (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S031000, C398S058000, C398S059000
Reexamination Certificate
active
09902944
ABSTRACT:
A system and method for a transparent WDM metro ring architecture in which optics enables simultaneous provisioning of dedicated wavelengths for high-end user terminals, while low-end user terminals share wavelengths on “virtual rings”. All wavelengths are sourced by the network and remotely modulated at customer “End Stations” by low cost semiconductor optical amplifiers, which also serve as transmission amplifiers. The transparent WDM metro ring architecture permits the communication of information and comprises a fiber optical feeder ring, at least one fiber optical distribution ring, a network node (NN), at least one access node (AN) said network node and said at least one access node connected via said fiber optical feeder ring and at least one end station (ES) connected via said fiber optical distribution ring to said at least one access node, wherein said user is attached to said at least one end station. A simple node that supports bi-directional propagation in transparent WDM metro architectures using “virtual rings” is also described. A method for communicating information over a WDM fiber optical ring network architecture in a metro access arena using one or more wavelengths, which can be shared by a plurality of user terminals, each user terminal coupled to an end station comprises the steps of sending downstream data packets, sending optical chalkboard packets consisting of ones and sending control signals.
REFERENCES:
patent: 5572612 (1996-11-01), Delavaux et al.
patent: 5801861 (1998-09-01), Majima
patent: 5854698 (1998-12-01), Eskildsen et al.
patent: 5886801 (1999-03-01), Van Deventer
patent: 6222654 (2001-04-01), Frigo
patent: 6252881 (2001-06-01), Samoylenko
patent: 6256431 (2001-07-01), Mesh
patent: 6278818 (2001-08-01), Laming et al.
patent: 6366373 (2002-04-01), MacKinnon et al.
patent: 6426815 (2002-07-01), Koehler
patent: 6509986 (2003-01-01), Mizrahi
patent: 6616348 (2003-09-01), Barnard
patent: 6616349 (2003-09-01), Li et al.
patent: 6766113 (2004-07-01), Al-Salameh et al.
patent: 6785473 (2004-08-01), Sasaki et al.
patent: 7006767 (2006-02-01), Frigo et al.
patent: 2002/0033416 (2002-03-01), Gerszberg et al.
L. H. Spiekman et al., “A Flexible Metro WDM ring using wavelength-independent subscriber equipment to share bandwidth”, Optical Fiber Communication Conference, Mar. 2000, pp. PD 38-1/281-283.
K.C. Reichmann, P.P. Iannone, M. Birk, N.J. Frigo, and C.F. Lam, “Simultaneous Delivery of 1280 Video Channels over a WDM Passive Optical Network,” ECOC Sep. 2000: 26thAnnual Conference on Optical Communication, Munich, Germany, pp. 79-80.
K.C. Reichmann, N.J. Frigo, P.P. Iannone and L. H. Spiekman, “A Simple Bi-directional Node for WDM Virtual Ring Networks”, LEOS 2000 Annual Meeting Conference, Nov. 2000, pp. 690-691.
P.P. Iannone, K.C. Reichmann, A. Smiljanic, N.J. Frigo, A. H. Gnauck, L.H. Spiekman, and R. M. Derosier, “A Transparent WDM Network Featuring Shared Virutal Rings”, Journal of Lightware Tech., vol. 18, No. 12, Dec. 2000, pp. 1955-1963.
P.P. Iannone, K.C. Reichmann, N.J. Frigo, A.H. Gnauck, and L.H. Spiekman; “A Flexible Metro WDM ring using wavelength-independent subscriber equipment to share bandwidth”, Optical Fiber Communication Conference, Mar. 2000, pp. PD38-1/281-28.3.
P.P. Iannone, K.C. Reichmann, M. Birk, N.J. Frigo, R.M. Derosier, D. Barbier, C. Cassagnettes, T. Garret, A. Veriucco, S. Perrier, and J. Phillipsen, “A 160-km Transparent Metro WDM ring network featuring cascaded erbium-doped waveguide amplifiers”, OFC 2001: Optical Fiber Communications Conference, Mar. 2001, vol. 3, pp. WBB3-1-WBB3-3.
Y. Chen, M. T. Fatehi, H. J. LaRoche, J. Z. Larsen and B. L. Nelson, “Metro Optical Networking”, Bell Labs Tech. Journal, vol. 4, N.1, Jan.-Mar. 1999, pp. 163-186.
R.C. Alferness, P. A. Bonenfant, C.J. Newton, K.A. Sparks E. L. Varma, “A Practical Vision for Optical Transport Networking”, Bell Labs Tech. Journal, vol. 4, N.1, Jan.-Mar. 1999, pp. 3-18.
J. M. Simmons & A.A. M. Saleh, “Optical Region Access Network (ORAN) Project”, OFC 1999: Optical Fiber Communications Conference, Feb. 1999. pp. WK1-1/178-180.
Frigo Nicholas J.
Iannone Patrick P.
Reichmann Kenneth C.
Smiljanic Aleksandra
AT&T Corp.
Sedighian M. R.
LandOfFree
Method for operating transparent node for WDM shared... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for operating transparent node for WDM shared..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for operating transparent node for WDM shared... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3759162