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Optical transmitter comprising a stepwise tunable laser

  • US 6,611,546 B1
  • Filed: 08/15/2001
  • Issued: 08/26/2003
  • Est. Priority Date: 08/15/2001
  • Status: Active Grant
First Claim
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1. A stepwise tunable external cavity laser, comprising an optical resonator, the resonator comprising:

  • a semiconductor amplifying mirror having a selected gain wavelength band and forming a first end of an optical resonator;

    an external mirror forming a second end of the optical resonator, the external mirror being positioned such that a frequency comb of the optical resonator provides is aligned to a predetermined optical channel spacing arrangement; and

    an electronically-actuated, frequency selective element, positioned within the optical resonator and having a control input to select an emission wavelength, of an optical beam emitted by the laser.

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