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10 Gb/s Long-Wavelength APD with Integrated Lens

Bottom-illuminated, high speed avalanche photodiode chip with a tapered coplanar transmission line and an integrated backside lens. The APD is optimized for single-mode Gigabit Passive Optical Networks (GPON) and 10 Gb/s SONET/SDH telecom applications. A key feature of this innovative APD is low excess noise, enabling receiver sensitivities of -29 dBm for 10 Gb/s NRZ signals when used with an appropriate TIA.
The integrated backside lens focuses the incoming light beam on the topside detecting area, enabling an easy and efficient optical coupling.


  • Enables a receiver sensitivity of –29 dBm with commercially available TIAs
  • High gain-bandwidth product: 90 GHz
  • Large lens diameter of 100 μm
  • Low operating bias: 29 V
  • Low temperature dependence: 25 mV/°C
  • Low capacitance: 140 fF

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