Crosstalk-free signal source for dense wavelength division multiplexed systems

  • US 6,233,080 B1
  • Filed: 08/26/1998
  • Issued: 05/15/2001
  • Est. Priority Date: 08/26/1998
  • Status: Expired due to Term
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First Claim
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1. An optical device for reducing crosstalk associated with a plurality of optical channels in a communication system comprising:

  • a light source for generating a light signal at a particular wavelength, said light source having a ramp-up period in which said light source does not substantially emit the light signal at the particular wavelength; and

    a light modulation element coupled to said light source, said light modulation element having an “

    on” and


    state such that when said light modulation element is in said “


    state, said light signal generated by said light source at said particular wavelength is substantially allowed to propagate along an optical transmission path, and when said light modulation element is in said “


    state, said light modulation element substantially prevents said light signal from propagating along said optical transmission path, said light modulation element being in the off state during the ramp-up period of said light source to substantially prevent the light signal at a wavelength other than the particular wavelength from propagating along said optical transmission path.

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