Optical communications – Multiplex – Broadcast and distribution system
Reexamination Certificate
2007-09-04
2007-09-04
Tran, Dzung (Department: 2613)
Optical communications
Multiplex
Broadcast and distribution system
C398S033000, C398S082000
Reexamination Certificate
active
09850935
ABSTRACT:
Systems and methods are described for an optiplex. A method includes: demultiplexing a multiplexed narrowcast input signal into a first narrowcast signal and a second narrowcast signal; conveying the first narrowcast signal to a first optical combiner; conveying the second narrowcast signal to a second optical combiner; tapping into said first narrowcast signal; monitoring a first characteristic of said first narrowcast signal; tapping into said second narrowcast signal; monitoring a second characteristic of said second narrowcast signal; combining a broadcast signal with the first narrowcast signal using the first optical combiner to give a first combined optical port output; and combining said broadcast signal with the second narrowcast signal using the second optical combiner to give a second combined optical port output. An apparatus includes: a first optical input; an optical splitter connected to said first optical input; a first optical waveguide connected to said optical splitter; a second optical waveguide connected to said optical splitter; a first optical combiner connected to said first optical waveguide, said first optical combiner giving a first combined optical port output; a second optical combiner connected to said second optical waveguide, said second optical combiner giving a second combined optical port output; a second optical input; an optical demulitplexer connected to said second optical input, the optical demultiplexer demultiplexing a multiplexed narrowcast input signal into a first narrowcast signal and a second narrowcast signal; a third optical waveguide connected to said optical demultiplexer; a fourth optical waveguide connected to said optical demultiplexer; a first tap coupler connected to said third optical waveguide and said first optical combiner; a second tap coupler connected to said forth optical waveguide and said second optical combiner; a first optical signal sensor coupled to both said first tap coupler and a signal processing unit; and a second optical signal sensor coupled to both said second tap coupler and said signal processing unit.
REFERENCES:
patent: 5457562 (1995-10-01), Tremblay
patent: 5923450 (1999-07-01), Dugan et al.
patent: 6157475 (2000-12-01), Dugan et al.
patent: 6195362 (2001-02-01), Darcie et al.
patent: 6271953 (2001-08-01), Dishman et al.
patent: 6389471 (2002-05-01), Agraharam et al.
patent: 0 546 707 (1993-06-01), None
Chen et al., Experimental Verification of an Evolutionary HFC Network Architecture for adding Narrowcast service, Optical Fiber Conference 2000, vol. 2, Mar. 7-10, 200, p. 157-159.
The art of Computer Program by Donald E. Knuth, Second edition, copyright @ 1973, 1968 by Adison—Wesley Publication Company.
Promotional materials, “OCRS-1508 Narrow/Broadcast Combiner & Distribution Module,” Nomura OCRS LLC, 1999.
Promotional materials, “Laser Link® 8-Channel Red Narrowcast/Broadcast Combiner,” Antec, 2000.
Supplementary European Search Report, EP 02 73 6679, completed Aug. 11, 2005.
Atlas D A et al.: “Multiwavelength analog video transport network” Microwave Photonics, 1999.
Xingyu Zou et al: “Two way DWDM optical network for analog and digital transmission” Broadband optical networks and technologies: an emerging reality/optical mems/smar pixels/organic optics and optoelectronics, 1998.
PCT International Search Report date mailed Nov. 4, 2002.
Barker Charles
Pradzynski Krzysztof
Aurora Networks, Inc.
John Bruckner PC
Tran Dzung
LandOfFree
N-way broadcast/narrowcast optical combiner demultiplexing a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with N-way broadcast/narrowcast optical combiner demultiplexing a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and N-way broadcast/narrowcast optical combiner demultiplexing a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3732069