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OPTICAL COMMUNICATIONS IN RECIPROCAL NETWORKS BASED ON WAVELENGTH SWITCHING

  • US 20110170862A1
  • Filed: 09/29/2009
  • Published: 07/14/2011
  • Est. Priority Date: 10/08/2008
  • Status: Abandoned Application
First Claim
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1. A system for optical communications, comprising:

  • a first optical communication module to output a first optical signal;

    an optical link optically coupled to the first optical communication module to receive and transmit the first optical signal; and

    a second optical communication module optically coupled to the fiber to reflect the first optical signal, without changing an optical wavelength of the reflected light, back into the link towards the first optical communication module as a second optical signal to be received by the first optical communication module,wherein the first optical communication module controls a wavelength of the first optical signal to change over time into, at a minimum, a first optical wavelength during a first duration of transmission of the first optical signal and a second, different optical wavelength during a second subsequent duration of the transmission of the first optical signal so that light being received in the second optical signal at the first optical communication module is at the first optical wavelength while light in the first optical signal being output by the first optical communication module is at the second optical wavelength.

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