Overall approach

Novoptel's polarization controllers (trackers) transform an unknown, variable input polarization (or pair of orthogonal polarizations) into an output polarization (or pair of orthogonal polarizations) which is usually fixed but can likewise be variable. Input tracking (control) speed is 40 krad/s and more, up to 100 krad/s, on the Poincaré sphere.

Novoptel designs software and boards, mounts optical components and tests and qualifies the units. Electronic hardware is manufactured by experienced, specialized subcontractors. One particularly attractive application of polarization control in the telecom sector is high-speed, low-power, low-cost automatic polarization demultiplex of polarization-multiplexed DQPSK (or otherwise) modulated signals. Your investment will be protected by optional FPGA software upgrades (if these should ever be deemed necessary).

Invitation: Challenge us or compete with us! We are eager to compete in endless polarization control quality, i.e., speed, accuracy and reliability, with any commercial or experimental optical polarization control system from other source. We are also eager to track polarization changes generated by polarization scramblers of your choice. Please contact us.

Product types

Desktop units and 19'' 1U rackmounts

  • For research and development, field trials, instrumentation etc.
  • Control via computer and data logging during polarization control is possible (USB).


  • These compact modules/subsystems can be integrated as daughterboards into optical systems such as DQPSK polarization division multiplex or coherent receivers.
  • The built-in FPGA can communicate with other digital electronics (SPI and if desired logic lines).

Intellectual property cores

  • Certain customers want to avoid daughterboards and integrate for example the complete polarization controller into their motherboard. To these customers an intellectual property (IP) core can be transferred.
  • IP core includes
    • specifications or schematics and layouts, including low-power ultrafast electrode voltage amplifiers, polarization error signal generation, A/D and D/A conversion, FPGA,
    • FPGA software licenses, and software changes if customer intends to use other hardware than we recommend.