Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2006-01-17
2006-01-17
Healy, Brian M. (Department: 2883)
Optical waveguides
With optical coupler
Switch
C385S015000, C385S017000, C385S024000, C398S112000, C398S111000, C398S113000, C398S043000, C398S048000
Reexamination Certificate
active
06987899
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: 4828389 (1989-05-01), Gubbins et al.
patent: 5157677 (1992-10-01), Narhi et al.
patent: 5606671 (1997-02-01), Wadsworth et al.
patent: 5862165 (1999-01-01), Handa et al.
patent: 6456426 (2002-09-01), Bolshtyansky et al.
patent: 6510261 (2003-01-01), Sorin et al.
patent: 6532322 (2003-03-01), Kim et al.
patent: 6539148 (2003-03-01), Kim et al.
patent: 6571030 (2003-05-01), Ramaswami et al.
patent: 6714697 (2004-03-01), Fukashiro et al.
patent: 2002/0131159 (2002-09-01), Ye et al.
patent: 2003/0099475 (2003-05-01), Nemoto et al.
patent: 2004/0188592 (2004-09-01), Watanabe
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-electronics Laboratories; B-10-189; pp. 1-8; (Translation Included).
I. Nakajima, I. Tsuyama, S. Kuroyanagi; 1999; A Frequency Multiplexed Routing and Selecting Hybrid Switch; Fujitsu Laboratories Ltd., Fujitsu Digital Technology Ltd.; B-12-17; pp. 1-6; (Translation Included).
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; pp. 1-6; (Translation Included).
E. L. Goldstein and L. Y. Lin; 1998;Multiwavelength Opaque Optical-Crossconnect Networks; AT&T Labs—Research; Third Optoelectronics and Communications Conferencel; Technical Digest; pp. 400-401.
Fukashiro Yasuyuki
Hirai Tooru
Healy Brian M.
Knoble & Yoshida & Dunleavy LLC
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