Photodiodes InGaAs


Very high speed PIN


Photodiodes offering a high responsivity and good linearity over a bandwidth exceeding 50 GHz.

Application
  • DPSK dual-PIN DTIA for long haul 40 Gb/s WDM transmission systems
PIN performances
  • High responsivity (>0.7 A/W over C-band)
  • Low polarisation loss (TE/TM<0.4 dB)
  • High speed operation (f3db > 40 GHz)
System performances for 43 Gb/s DPSK
  • Excellent OSNR performance (18.5 dB/0.1 nm)
  • ~ 1.5dB margin wrt BOL specs
  • wide CDR threshold margin

Top view of a waveguide pin photodiode designed for 40 Gbit/s applications. The anti-reflection coated dry-etched input facet (top center) is offset from the cleaved facet, allowing collective on wafer processing. Light is evanescently coupled from the multimode diluted quantum well waveguide into the 5 x 25µm 2 absorption region.
 

APD 10 Gb/s and beyond


Application
  • 10 Gb/s fibre optic receivers
Features
  • Telecom Avalanche Photodiode
  • 3-dB bandwidth > 10 GHz (9>M>3)
  • Flip-chip mounted on a high frequency carrier compatible with butterfly / TO-Can ROSA module assembly
  • Operating temperature range: 0°C to 70°C
  • 9.5 A/W (M=10) sensitivity