Specialty Products

Two-Color Detectors

Two-Color Detectors

Two-color or Sandwich detectors are typically used for measurement applications requiring increased spectral range, or to take remote temperature measurements. These detectors have one photodiode mounted over a second photodiode of the same or different material. Many standard and custom combinations are available using the following materials: silicon, germanium, InGaAs, and extended-wavelength InGaAs.


  • Extended spectral range
  • Large active areas
  • Low dark current


  • Spectrophotometry
  • Remote temperature sensing

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