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Localized thermal tuning of ring resonators

  • US 6,636,668 B1
  • Filed: 11/22/2000
  • Issued: 10/21/2003
  • Est. Priority Date: 11/23/1999
  • Status: Active Grant
First Claim
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1. A thermally tunable resonator comprising:

  • a resonator body having a resonance wavelength which changes as a function of temperature;

    a trench formed inside the resonator body;

    a disk formed inside the trench, the disk comprising a plurality of semiconductor layers, the layers being suitably doped to form a forward biased junction;

    a first electrode disposed atop the disk and in electrical contact with the forward biased junction, the electrode being dimensioned so as not to cover the resonator body; and

    a second eletrode disposed beneath and in electrical contact with the forward biased junction;

    wherein when a current is applied through the first and the second electrodes to the forward biased junction, heat is generated, changing the resonance wavelength of the resonator body.

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