Optical apparatus and optical cross connect apparatus
First Claim
1. An optical apparatus, comprising:
- a plurality of input ports;
a plurality of output ports;
a plurality of upstream side optical devices provided corresponding to said input ports;
a plurality of downstream side optical devices provided corresponding to said output ports;
each of said plural upstream side optical devices having an input port connected to a corresponding one of said input ports and a plurality of outputs individually connected to said plural downstream side optical devices;
each of said downstream side optical devices having a plurality of inputs individually connected to the outputs of said upstream side optical devices and an output connected to a corresponding one of said output ports;
said upstream side optical devices and said down stream side optical devices being configured so as to be capable of changing over said output ports which are to be determined as output destinations of lights from said input ports for each of wavelengths;
an upstream side standby switch having a plurality of inputs individually connected to said input ports and capable of changing over an output of the lights from said inputs for each of the wavelengths; and
a downstream side standby switch having an input connected to the output of said upstream side standby switch and a plurality of outputs individually connected to said output ports and capable of outputting the light from the input to said outputs for each of the wavelengths.
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Accused Products
Abstract
An optical apparatus is disclosed wherein increase of the number of wavelength selective switches provided for a standby system can be suppressed. The optical apparatus includes a plurality of upstream side optical devices and a plurality of downstream side optical devices configured such that a plurality of output ports to be set as output destinations of light from a plurality of input ports can be changed over for each wavelength. An upstream side standby switch connected at a plurality of inputs thereof individually to the input ports and can change over an output of light from the inputs for each wavelength. A downstream side standby switch is connected at an input thereof to the output of the upstream side standby switch and at a plurality of outputs thereof individually to the output ports and can output light from the input to the plural outputs thereof.
94 Citations
15 Claims
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1. An optical apparatus, comprising:
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a plurality of input ports;
a plurality of output ports;
a plurality of upstream side optical devices provided corresponding to said input ports;
a plurality of downstream side optical devices provided corresponding to said output ports;
each of said plural upstream side optical devices having an input port connected to a corresponding one of said input ports and a plurality of outputs individually connected to said plural downstream side optical devices;
each of said downstream side optical devices having a plurality of inputs individually connected to the outputs of said upstream side optical devices and an output connected to a corresponding one of said output ports;
said upstream side optical devices and said down stream side optical devices being configured so as to be capable of changing over said output ports which are to be determined as output destinations of lights from said input ports for each of wavelengths;
an upstream side standby switch having a plurality of inputs individually connected to said input ports and capable of changing over an output of the lights from said inputs for each of the wavelengths; and
a downstream side standby switch having an input connected to the output of said upstream side standby switch and a plurality of outputs individually connected to said output ports and capable of outputting the light from the input to said outputs for each of the wavelengths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An optical cross connect apparatus for optically cross connecting a plurality of input ports and a plurality of output ports, comprising:
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a plurality of upstream side wavelength selective switches provided corresponding to said input ports for outputting input wavelength division multiplexed signals from said input ports from output routes changed over for each of wavelengths;
a plurality of downstream side wavelength selective optical switches provided corresponding to said output ports for receiving, at inputs thereof, the optical signals outputted from the output routes of said upstream side wavelength selective switches, selecting the optical signals to be introduced to said output ports from among the inputted optical signals for each of the wavelengths and outputting the selected wavelength division multiplexed signals;
a plurality of tunable wavelength filters individually corresponding to said input ports for receiving the input wavelength division multiplexed signals from said input ports as inputs thereto and passing selected wavelength components of the input wavelength division multiplexed optical signals therethrough;
a plurality of branching devices individually corresponding to said input ports for branching the optical signals of the wavelength components having passed through said tunable wavelength filters toward said output ports; and
a plurality of continuity/discontinuity gates individually corresponding to said input ports for continuing or discontinuing the optical signals branched by said branching devices to said output ports.
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Specification