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Photodiode device and method for fabrication

  • US 20040041079A1
  • Filed: 09/04/2003
  • Published: 03/04/2004
  • Est. Priority Date: 02/08/1999
  • Status: Active Grant
First Claim
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1. A solid state optical spectrometer for combustion flame temperature determination, the spectrometer comprising:

  • a first photodiode device for obtaining a first photodiode signal, the first photodiode device comprising a silicon carbide photodiode and having a range of optical responsivity within an OH band;

    a second photodiode device for obtaining a second photodiode signal, the second photodiode device comprising a silicon carbide photodiode and a filter, the second photodiode device having a range of optical responsivity in a different and overlapping portion of the OH band than the first photodiode device;

    a computer for obtaining a ratio using the first and second photodiode signals and using the ratio to determine the combustion flame temperature.

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