Optical communications – Multiplex – Optical switching
Reexamination Certificate
2007-06-19
2007-06-19
Pascal, Leslie (Department: 2613)
Optical communications
Multiplex
Optical switching
C398S093000, C398S094000, C398S095000
Reexamination Certificate
active
10101283
ABSTRACT:
An optical exchange for a wavelength division multiplexed (WDM) network performs a switching operation on a plurality of optical signals, which are input via a plurality of input ports, and outputs the resulting optical signals to a plurality of output ports, which are allocated to the input ports, by making deflection the optical signal; target amounts of the deflection to which the respective input optical signals are stored. The deflection is made using a switching controller, which reads out the target amount of deflection for such destination-of-switching output port with respect to such object-of-switching port, and controlling the deflection in such a manner that the individual input optical signals are deflected based on the respective target amounts of deflection. And during the switching, the power-level controller performs a feedback control for adjusting a power level of the individual deflected output optical signal to a target power level.
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Japanese Office Action issued on Nov. 8, 2006 in Japanese Application No. 2001-334807.
Ishizuka Atsuo
Mori Kazuyuki
Fujitsu Limited
Pascal Leslie
Staas & Halsey , LLP
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