Optical communications – Multiplex – Optical switching
Reexamination Certificate
2008-05-27
2008-05-27
Pascal, Leslie (Department: 2613)
Optical communications
Multiplex
Optical switching
C398S094000, C398S097000
Reexamination Certificate
active
10115680
ABSTRACT:
An improved photonic switch having optical amplification is described. Signals are amplified before they are switched, after they are switched, or both before and after they are switched. The optical amplification compensates for fixed losses within the switch and transmission system, or provides output power equalization. The photonic switching system includes a demultiplexer for dividing incoming light into different wavelengths or wavebands. The different signals are then supplied to optical amplifiers. The amplifiers amplify the optical signals before supplying them to the optical switch core. Once in the optical switch core, the signals are switched as desired to specified output nodes, then multiplexed back together to provide an output signal from the photonic switching system. In some systems amplification is further provided on the output side. The system also provides a control system by which the optical power of the signals is sensed and controllably amplified to achieve desired results, for example, fixed loss compensation, output power equalization, or other desired levels.
REFERENCES:
patent: 4053845 (1977-10-01), Gould
patent: 4432599 (1984-02-01), McMahon
patent: 4894818 (1990-01-01), Fujioka et al.
patent: 4927221 (1990-05-01), Kiyono
patent: 5471332 (1995-11-01), Shiragaki et al.
patent: 5541756 (1996-07-01), Chang-Hasnain et al.
patent: 5568575 (1996-10-01), Sato
patent: 5583516 (1996-12-01), Lembo
patent: 5878177 (1999-03-01), Karasan et al.
patent: 5963682 (1999-10-01), Dorschner et al.
patent: 6061369 (2000-05-01), Conradi
patent: 6097858 (2000-08-01), Laor
patent: 6097859 (2000-08-01), Solgaard et al.
patent: 6097860 (2000-08-01), Laor
patent: 6101299 (2000-08-01), Laor
patent: 6157663 (2000-12-01), Wu et al.
patent: 6226424 (2001-05-01), Ball et al.
patent: 6236481 (2001-05-01), Laor
patent: 6240222 (2001-05-01), Bergmann
patent: 6253001 (2001-06-01), Hoen
patent: 6285500 (2001-09-01), Ranalli et al.
patent: 6320993 (2001-11-01), Laor
patent: 6330102 (2001-12-01), Daneman et al.
patent: 6347101 (2002-02-01), Wu et al.
patent: 6456751 (2002-09-01), Bowers et al.
patent: 6466711 (2002-10-01), Laor et al.
patent: 6483961 (2002-11-01), Helkey et al.
patent: 6483962 (2002-11-01), Novotny
patent: 6490381 (2002-12-01), Adair et al.
patent: 6525871 (2003-02-01), Kosaka
patent: 6549691 (2003-04-01), Street et al.
patent: 6549692 (2003-04-01), Harel et al.
patent: 6560384 (2003-05-01), Helkey et al.
patent: 6578974 (2003-06-01), Helkey
patent: 6585383 (2003-07-01), Helkey
patent: 6587611 (2003-07-01), Hunt
patent: 6612706 (2003-09-01), Helkey
patent: 6628041 (2003-09-01), Lee et al.
patent: 6628448 (2003-09-01), Ohtsuka et al.
patent: 6643425 (2003-11-01), Bowers et al.
patent: 6668108 (2003-12-01), Helkey et al.
patent: 6735394 (2004-05-01), Yue et al.
patent: 6792177 (2004-09-01), Welsh et al.
patent: 6882800 (2005-04-01), Graves
patent: 6904195 (2005-06-01), Bowers et al.
patent: 7127137 (2006-10-01), Bowers et al.
patent: 7142744 (2006-11-01), Walter et al.
patent: 2002/0122251 (2002-09-01), DeBoynton et al.
patent: 2003/0058497 (2003-03-01), Park et al.
patent: WO 99/66354 (1999-12-01), None
Blakely , Sokoloff, Taylor & Zafman LLP
Calient Networks, Inc.
Pascal Leslie
LandOfFree
Optical amplification in photonic switched crossconnect systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical amplification in photonic switched crossconnect systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical amplification in photonic switched crossconnect systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3908315