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Attenuation device for wavelength multiplexed optical fiber communications

  • US 5,745,271 A
  • Filed: 07/31/1996
  • Issued: 04/28/1998
  • Est. Priority Date: 07/31/1996
  • Status: Expired due to Term
First Claim
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1. An optical signal attenuation device for selectively attenuating different wavelength signals contained within a multiplexed transmission, comprising:

  • a first diffraction element for diffracting the light associated with the multiplexed transmission, wherein each wavelength signal contained within the multiplexed transmission is directed along a separate optical path; and

    a modulator disposed along each separate optical path, wherein each modulator receives a wavelength signal from said diffraction element and causes a corresponding signal to be produced at a selective optical signal strength.

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