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Diffractive fourier optics for optical communications

  • US 6,795,182 B2
  • Filed: 07/03/2002
  • Issued: 09/21/2004
  • Est. Priority Date: 07/06/2001
  • Status: Expired due to Fees
First Claim
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1. The method of separately directing individual wavelength signals from an optical DWDM beam to be modulated at different positions along an image plane, comprising the steps of:

  • forming a wide, low profile DWDM beam;

    tightly refolding the beam at least twice in the low profile direction while diffractively dispersing components in a wavelength dependent manner; and

    delivering spatially separated wavelength components of the beam at different positions along the image plane as areal images which are elongated relative to the folding direction.

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