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Temperature sensing device patterned on an electro-optic transducer die

  • US 7,706,421 B2
  • Filed: 04/20/2005
  • Issued: 04/27/2010
  • Est. Priority Date: 04/20/2005
  • Status: Active Grant
First Claim
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1. An optical transmit assembly comprising:

  • an electro-optic transducer die that emits light when current is passed through the electro-optic transducer die, the electro-optic transducer die including;

    an optically emissive PN junctiona top surface;

    at least one electrical contact patterned on the top surface for applying a control current through the PN junction to control optical emissions from the PN junction;

    a bottom surface;

    a temperature sensor patterned directly on a surface of the electro-optic transducer die such that the temperature sensor is closely positioned to the PN junction;

    one or more electrical connections patterned on a surface of the electro-optical transducer die for establishing an electrical connection to determine a temperatures sensed by the temperature sensor; and

    a substrate, wherein the electro-optic transducer is mounted on the substrate, wherein the surface of the electro-optic transducer to which the temperature sensor is patterned is most distant from the substrate.

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