Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2007-06-12
2007-06-12
Singh, Dalzid (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S003000, C398S004000, C398S059000
Reexamination Certificate
active
10112022
ABSTRACT:
A flexible open ring optical network includes a plurality of nodes connected by twin or other suitable optical rings. Each node is operable to passively add and passively drop traffic from the rings. The nodes may include a transport element for each ring. The transport elements include an optical splitter element and an optical combiner element. The optical splitter element is operable to passively combine an add signal including local add traffic and a first transport signal including ingress traffic from a coupled optical ring to generate a second transport signal including egress traffic for transmission on the coupled optical ring. The optical combiner element is coupled to the optical splitter element and is operable to passively split a third transport signal including the ingress traffic to generate a drop signal including local drop traffic and a fourth transport signal including the ingress traffic. Protection switching may be provided by selectively openable switches disposed in and distributed around the rings.
REFERENCES:
patent: 5323258 (1994-06-01), Tsushima et al.
patent: 5483372 (1996-01-01), Green, Jr.
patent: 5510920 (1996-04-01), Ota
patent: 5550818 (1996-08-01), Brackett et al.
patent: 5576875 (1996-11-01), Chawki et al.
patent: 5680235 (1997-10-01), Johansson
patent: 5748811 (1998-05-01), Amersfoort et al.
patent: 5771112 (1998-06-01), Hamel et al.
patent: 5774606 (1998-06-01), de Barros et al.
patent: 5778118 (1998-07-01), Sridhar
patent: 5903371 (1999-05-01), Arecco et al.
patent: 5905838 (1999-05-01), Judy et al.
patent: 5956319 (1999-09-01), Meli
patent: 5959749 (1999-09-01), Danagher et al.
patent: 5999291 (1999-12-01), Anderson
patent: 6025941 (2000-02-01), Srivastava et al.
patent: 6028898 (2000-02-01), Sparks et al.
patent: 6038357 (2000-03-01), Pan
patent: 6040933 (2000-03-01), Khaleghi et al.
patent: 6101012 (2000-08-01), Danagher et al.
patent: 6115154 (2000-09-01), Antoniades et al.
patent: 6115156 (2000-09-01), Otani et al.
patent: 6125220 (2000-09-01), Copner et al.
patent: 6151356 (2000-11-01), Spagnoletti et al.
patent: 6160648 (2000-12-01), Öberg et al.
patent: 6160660 (2000-12-01), Aina et al.
patent: 6163527 (2000-12-01), Ester et al.
patent: 6166838 (2000-12-01), Liu et al.
patent: 6172801 (2001-01-01), Takeda et al.
patent: 6181849 (2001-01-01), Lin et al.
patent: 6188816 (2001-02-01), Solheim
patent: 6192172 (2001-02-01), Fatehi et al.
patent: 6192173 (2001-02-01), Solheim et al.
patent: 6195186 (2001-02-01), Asahi
patent: 6201909 (2001-03-01), Kewitsch et al.
patent: 6205158 (2001-03-01), Martin et al.
patent: 6208440 (2001-03-01), Jang
patent: 6222654 (2001-04-01), Frigo
patent: 6226117 (2001-05-01), Hentschel
patent: 6236499 (2001-05-01), Berg et al.
patent: 6243517 (2001-06-01), Deacon
patent: 6249510 (2001-06-01), Thompson
patent: 6268951 (2001-07-01), Chen et al.
patent: 6275331 (2001-08-01), Jones et al.
patent: 6278818 (2001-08-01), Laming et al.
patent: 6285479 (2001-09-01), Okazaki et al.
patent: 6288834 (2001-09-01), Sugaya et al.
patent: 6298038 (2001-10-01), Martin et al.
patent: 6331906 (2001-12-01), Sharma et al.
patent: 6337755 (2002-01-01), Cao
patent: 6400476 (2002-06-01), Arecco
patent: 6434288 (2002-08-01), Uemura et al.
patent: 6445850 (2002-09-01), Zhou et al.
patent: 6456406 (2002-09-01), Arecco et al.
patent: 6456407 (2002-09-01), Tammela et al.
patent: 6519064 (2003-02-01), Fatehi et al.
patent: 6529303 (2003-03-01), Rowan et al.
patent: 6532102 (2003-03-01), Kobayashi et al.
patent: 6590681 (2003-07-01), Egnell et al.
patent: 6657952 (2003-12-01), Shiragaki et al.
patent: 2002/0067523 (2002-06-01), Way
patent: 2002/0145779 (2002-10-01), Strasser et al.
patent: 2002/0149817 (2002-10-01), Kiliccote et al.
patent: 2003/0025961 (2003-02-01), Way
patent: 2004/0114927 (2004-06-01), Fielding et al.
patent: 1 006 688 (1900-06-01), None
patent: 0 848 514 (1998-06-01), None
patent: 0 855 814 (1998-07-01), None
patent: 0 920 153 (1999-06-01), None
patent: 0 949 777 (1999-10-01), None
patent: 1 014 613 (2000-06-01), None
patent: WO 96/32787 (1995-10-01), None
patent: WO 97/01907 (1997-01-01), None
patent: WO 98/47255 (1998-10-01), None
patent: WO 98/52314 (1998-11-01), None
patent: WO 99/03230 (1999-01-01), None
patent: WO 99/03231 (1999-01-01), None
patent: 99/65164 (1999-12-01), None
patent: WO 99/65164 (1999-12-01), None
patent: WO 01/17151 (2001-03-01), None
Communication from the European Patent Office, European Search Report for Application No. EP 03 00 6739, Mar. 2, 2006, 5 pages.
Johansson et al., “Flexible Bus: A Self-Restoring Optical ADM Ring Architecture,” Electronics Letters, IEE Stevenage, GB, vol. 32, No. 25, Dec. 5, 1996, pp. 2338-2339, XP006006086.
Communication from the European Patent Office, European Search Report for Application No. EP 03 00 6220, Feb. 15, 2006, 4 pages.
Written Opinion for PCT US01/11203, (4 pages), Nov. 12, 2003.
Bellcore, “SONET Bidirectional Line-Switched Ring Equipment Generic Criteria,” , A Module of TSGR, RF-440, Generic Requirements, GR-1230-Core, Issue 4, Dec. 1998 (274 pages).
Kinoshita et al., “Flexible Twin Open Ring Metro WDM Network,” OECC, pp. 713-714, Oct. 2003.
Tian et al., “OUPSR Protected Flexible Metro WDM Network,” ECOC, pp. 826-827, 2003.
Boskovic et al., “Broadcast and Select OADM Nodes Application and Performance Trade-offs,” OFC, pp. 158-159, 2002.
Kinoshita et al. “Flexible Metro WDM Network with Photonic Domains”, Fujitsu Laboratories of America, Inc., 3 pages, Feb. 24-26, 2004.
Suzuki et al., “Prototype of 12.5GHz-Spaced Tapped-Type OADM for DWDM Metro Ring Networks,” ECOC-IOOC Proceedings—vol. 4, pp. 902-903, Sep. 21-25, 2003.
Wolde, J., et al., “Optical Ethernet Metro Access Network Protype: Implementation and Results,” ECOC-IOOC 2003, 3 pages, Sep. 21-25, 2003.
PCT, Notification of Transmittal of the International Search Report or the Declaration, International Application No. PCT/US03/15649, 7 pages, Feb. 3, 2004.
Vasilyev et al., 80x10.7 Gb/s Ultra-Long-Haul (+4200 km) “DWDM Network with Reconfigurable Broadcast & Select OADMs,” OFC 2002 Postedeadline Papers, Corning, 2002.
Bacque, B. et al., “R-OADM Architecture—Now you can Control the Light,” Tropic Networks, pp. 1-11, 2003.
Grenfeldt, “ERION-Ericsson optical networking using WDM technology,” Ericsson Review No. 3, pp. 132-137, 1998.
Ashmead, “ROADMap for the Metro Market,” Fiberoptic Product News, 3 pages (36, 38, and 40), Oct. 2001.
Batchellor, “Optical Networking the Ericsson Way,” Ericsson Limited, Business Unit Transport and Cable Networks, pp. 1-4, Feb. 22, 2002.
Magnus Grenfeldt, “ERION—Ericsson optical networking using WDM technology,”Ericsson Review, No. 3, 1998, 6 pages.
Evan Goldstein, “Optical Ring Networks with Distributed Amplification,”IEEE Photonics Technology Letters, vol. 3, No. 4, Apr. 1991, 4 pages.
Ori Gerstel of Nortel Networks, “Optical Layer Survivability,” Tutorial T4, slides of OMS DPRing: Flexing Bus and Pros/Con of Flexing Bus, OptiComm 2000,Conference on Optical Communications and Networking, Oct. 2000, 2 pages.
Vincent W. S. Chan, Serena Chan, and Shayan Mookherjea, “Optical Distribution Networks,” OptiComm 2000: Optical Networking and Communications,Proceedings of SPIE, vol. 4233, Oct. 2000, 12 pages.
Calvin J. Martin, Chiroll Tolliver, Jerome Case, Marcus W. Shute, Sr., and Z. Y. Gills, “A Flexible Broadband Wavelength Multiplexer,”Proceedings of SPIE, vol. 4532, 2001, 12 pages, 2000.
Shayan Mookherjea, “Remotely Pumped Optical Distribution Networks: A Distributed Amplifier Model,”Journal of Lightwave Technology, vol. 19, No. 7, Jul. 2001, 7 pages.
Vincent W. S. Chan and Serena Chan, “Optical distribution networks,”Optical Networks Magazine, Jan./Feb. 2002, 9 pages.
Rob Batchellor, “Optical Networking the Ericsson Way,”Ericsson Limited, Business U
Kinoshita Susumu
Odate Satoru
Takeguchi Koji
Tian Cechan
Baker & Botts L.L.P.
Fujitsu Limited
Singh Dalzid
LandOfFree
Flexible open ring optical network and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flexible open ring optical network and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible open ring optical network and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3812025