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OPTICAL TRANSMISSION APPARATUS

  • US 20100260499A1
  • Filed: 03/30/2010
  • Published: 10/14/2010
  • Est. Priority Date: 04/09/2009
  • Status: Active Grant
First Claim
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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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