OPTICAL TRANSMISSION APPARATUS
First Claim
1. An optical transmission apparatus comprising:
- a plurality of wavelength selective switches including input ports, a transmission port used to output a wavelength multiplexed light that the light from the input port is switched and multiplexed, and monitor port used to output a light switched so that the light from the input port is monitored;
a multiplexer to combine the lights output from the transmission ports of the plurality of wavelength selective switches;
a monitor to monitor whether a same wavelength of the light output from the monitor port exists in wavelengths of the lights combined by the multiplexer; and
a controller to control the wavelength selective switch so as to output, from the transmission port, the light switched to the monitor port in case that the same wavelength of the light output from the monitor port is absent in wavelengths of the lights combined by the multiplexer, based on a monitor result by the monitor.
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Accused Products
Abstract
There is provided an optical transmission apparatus including: a plurality of wavelength selective switches including input ports, a transmission port, and monitor port used to output a light switched so that the light from the input port is monitored; a multiplexer to combine the lights output from the transmission ports of the plurality of wavelength selective switches; a monitor to monitor whether a same wavelength of the light output from the monitor port exists in wavelengths of the lights combined by the multiplexer; and a controller to control the wavelength selective switch so as to output, from the transmission port, the light switched to the monitor port in case that the same wavelength of the light output from the monitor port is absent in wavelengths of the lights combined by the multiplexer, based on a monitor result by the monitor.
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Citations
12 Claims
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1. An optical transmission apparatus comprising:
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a plurality of wavelength selective switches including input ports, a transmission port used to output a wavelength multiplexed light that the light from the input port is switched and multiplexed, and monitor port used to output a light switched so that the light from the input port is monitored; a multiplexer to combine the lights output from the transmission ports of the plurality of wavelength selective switches; a monitor to monitor whether a same wavelength of the light output from the monitor port exists in wavelengths of the lights combined by the multiplexer; and a controller to control the wavelength selective switch so as to output, from the transmission port, the light switched to the monitor port in case that the same wavelength of the light output from the monitor port is absent in wavelengths of the lights combined by the multiplexer, based on a monitor result by the monitor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical transmission apparatus comprising:
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a controller; a plurality of wavelength selective switches including input ports, and a transmission port used to output a wavelength multiplexed light that the light from the input port is switched and multiplexed; a monitor switch including a plurality of input ports for monitor being respectively connected to the input ports, and a monitor port used to output a light switched so that the light from the input port is monitored, the monitor switch of each wavelength selective switch being arranged, the monitor switch outputting a light input from the input port and received via the input port for monitor from the monitor port based on control of the controller; a multiplexer to combine the lights output from the transmission ports of the plurality of wavelength selective switches; and a monitor to monitor whether a same wavelength of the light output from the monitor port exists in wavelengths of the lights combined by the multiplexer; wherein the controller controls the wavelength selective switch so as to output, from the transmission port, the light switched to the monitor port in case that the same wavelength of the light output from the monitor port is absent in wavelengths of the lights combined by the multiplexer.
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8. An optical transmission apparatus comprising:
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a controller; an optical cross connect switch including input ports, a transmission port used to output a wavelength multiplexed light that the light from the input port is switched and multiplexed, and monitor port used to output a light switched so that the light from the input port is monitored, the optical cross connect switch outputting a light input from the input port from the monitor port based on control of the controller; a multiplexer to combine the lights output from the transmission ports of the optical cross connect switch; and a monitor to monitor whether a same wavelength of the light output from the monitor port exists in wavelengths of the lights combined by the multiplexer; wherein the controller controls the optical cross connect switch so as to output, from the transmission port, the light switched to the monitor port in case that the same wavelength of the light output from the monitor port is absent in wavelengths of the lights combined by the multiplexer. - View Dependent Claims (9, 10, 11, 12)
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Specification