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Fabry-Perot laser with wavelength control

  • US 6,741,624 B2
  • Filed: 06/03/2002
  • Issued: 05/25/2004
  • Est. Priority Date: 03/05/1999
  • Status: Expired due to Term
First Claim
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1. A laser device comprising:

  • a laser cavity comprising an optical waveguide and facets defining first lasing modes;

    a sub-cavity within said laser cavity, said sub-cavity having a predetermined length and being located between said facets, said predetermined sub-cavity length defining second lasing modes having a free spectral range (FSR) that is greater than a FSR of the first lasing modes; and

    a plurality of contrast elements adjacent said sub-cavity and having predetermined inter-element separations and predetermined spacings relative to said sub-cavity, said contrast elements interacting with said optical waveguide and forming an aperiodic grating to produce a filtering function for optical radiation propagating in said optical waveguide.

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