The Lumentum High-Bandwidth Coherent Driver Modulator (HB-CDM) is a cutting-edge product for high-end communications networks, providing the functionality of a high performance coherent modulation in a small form-factor (OIF standard). It takes a polarized input (PMF fiber, light injected on fast axis) and splits the light over two polarization paths and adds phase modulated coding, typically DP-QPSK or QAM. It then combines the light into one fiber (SMF) for transmission over long distance networks.
The product works well with the Lumentum Integrated Coherent Receiver.
The HB-CDM (and micro-ICR) have electrical interfaces with bandwidth of 40GHz. In addition, they have a complex control architecture with up to 40 control pins (power, digital, analog, communications, etc.).
The PPEB096 RF board provides a pin out of the DC traces to appropriate IDC headers with sufficient capacity to support the different current supplies. The RF traces are tested at 40GHz BW and are appropriate to provide the HB-CDM with the modulation signals.
The PPEB090 control board (currently in development) controls the different current supplies as well as the digital and analog signaling. Along with our GUI it provides a full control solution and with the open communications interface it can be integrated into your own scripts.
The PPEB090 stacks on top of the PPEB096 to form a compact full testing solution.
