Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2006-01-10
2006-01-10
Healy, Brian M. (Department: 2874)
Optical waveguides
With optical coupler
Switch
C385S015000, C385S017000, C385S024000, C398S111000, C398S112000, C398S113000, C398S043000, C398S048000
Reexamination Certificate
active
06985649
ABSTRACT:
An optical switching apparatus includes an optical switch having a plurality of input ports and output ports, optical amplifiers, monitor circuits, optical amplifiers monitor circuits, and a controller that controls the optical switch. The optical amplifiers are connected to the input ports of the optical switch. The monitor circuits are connected to the output ports of the optical switch. The controller selects one of the plurality of the monitor circuits based on predetermined rules to obtains the loss at the output ports and/or the differential loss between the channels of the optical switch. The controller further selects one of the optical amplifiers based on the configuration of the optical switch to compensate the loss and the differential loss among the different channels of the optical switch by pre-amplifying the optical signals before they reach the input ports of the optical switch.
REFERENCES:
patent: 4313224 (1982-01-01), Wakabayashi et al.
patent: 5054876 (1991-10-01), Grasso et al.
patent: 5757526 (1998-05-01), Shiragaki et al.
patent: 5940209 (1999-08-01), Nguyen
patent: 6055078 (2000-04-01), Chen et al.
patent: 6115154 (2000-09-01), Antoniades et al.
patent: 6407854 (2002-06-01), Shum
patent: 6714697 (2004-03-01), Fukashiro et al.
patent: 2002/0191892 (2002-12-01), Fukashiro et al.
patent: 06-051355 (1994-02-01), None
patent: 11-32010 (1999-02-01), None
Shinji Nagaoka; 1997; Multi-port 1×2 Single-mode Fiber Switch; NTT Opto-ekectronics Laboratories; B-10-189; pp. 488.
I. Nakajima, I. Tsuyama, and S. Kuroyanagi; 1999; A Frequency Multiplexded Routing and Selecting Hybrid Switch; Fujitsu Laboratories Ltd., Fujitsu Digital Technology Ltd.; B-12-17; pp. 356.
K. Otsuka, T. Maki, Y. Sanpei, Y. Tachikawa, N. Fukushima, and T. Chikama; 1997; Power Control in ADM Node using High-speed, Compact-size Optical Spectrum Monitor; Fujitsu Laboratories Ltd., Fujitsu Limited, Yokogawa Electric Corporation; B-10-101; p. 400.
M. Makihara, F. Shimokawa, and K. Kaneko; 2000; Strictly Non-blocking N×N Thermo-Capillarity Optical Matrix Switch using Silica-based Waveguide; NTT telecommunication Energy Laboratories; pp. TuM2-1/207-TuM2-3/209.
E. L. Goldstein and L. Y. Lin; 1998; Multiwavelength Opaque Optical-Crossconnect Networks; AT&T Labs-Research; Third Optoelectronics and Communications Conference; Technical Digest; pp. 400-401.
J. E. Fouquet; 2000; Compact Optical Cross-Connect Switch Based on Total Internal Reflection in a Fluid-Containing Planar Lightwave Circuit; Agilent Laboratories; pp. 204/TuM1-1—206/TuM1-3.
Fukashiro Yasuyuki
Hirai Tooru
Healy Brian M.
Knoble Yoshida & Dunleavy
LandOfFree
Optical switching apparatus and optical switching 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 Optical switching apparatus and optical switching method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical switching apparatus and optical switching method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3597297