100Gbps Coherent DP-QPSK Receiver, U2T (Finisar) CPRV1225A, Monolithically Integrated

100Gbps Coherent DP-QPSK Receiver, U2T (Finisar) CPRV1225A, PBS and 90Deg. Hybrid Integrated

The coherent receiver module CPRV1225A consists of an integrated polarization beam splitter and four balanced photo-receivers monolithically integrated with optical 90° hybrids. The receiver is a fully differential optical front-end suited for 100 Gbit/s DP-QPSK applications featuring high linearity and high common mode rejection ratio. The optical 90° hybrids demodulate the I/Q incident signal for each respective polarization state using external reference oscillator laser sources. The mixing products are detected by PIN-photodiodes and amplified by trans-impedance amplifiers (TIA) with linear transfer characteristics.

All output channels feature integrated peak-detectors for optional AGC-loop operation. The integrated VGA stage offers 20 dB dynamic gain adjustment range and has very low total harmonic distortion.


  • Up to 4×32 GBaud, 25 GHz 3dB cut-off bandwidth
  • CCRx-MSA compliant, surface mount package
  • Coplanar RF-output interface, single power supply +3.3 V,
  • Polarization diversity, input signal power monitor
  • Optical input power Max.16dBm for LO and -20~+6dBm for SIG,
  • 20 dB dynamic range, 1530~1570nm wavelength range
  • Selectable automatic / manual gain control
  • Linear amplifier with peak detector output


  • 100 GBit/s Ethernet Transmission Systems
  • Dual polarization coherent detection QPSK receiver
  • Intradyne and homodyne coherent detection

CPRV1220A-1 CPRV1220A-2