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High Power Optical Head with Integrating Sphere

The 81628C High-Power Optical Head features an integrated sphere that enables it to handle power levels up to +40 dBm (with heat sink), across 800 nm to 1700 nm wavelength range. It provides the highest accuracy at high power within the family.

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  • Sensor type

    InGaAs

  • Wavelength range

    800 nm to 1700 nm

  • Power range

    +40 dBm to -60 dBm

  • Type

    Head

  • Uncertainty at reference conditions

    ± 3.0%

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Highlights

The integrating sphere of the new 81628C high-power optical head accepts the input of signals from single mode fiber with NA ≤ 0.2, and MM fiber with NA ≤ 0.4, as well as from parallel beams with up to 3 mm diameter. If equipped with the included heat sink, optical power levels up to +40 dBm can be measured.

The form factor allows flexible placement of the remote optical power meter, which is then connected to the N7749C. A wide choice of adapters allows input from popular fiber connector types, bare fibers or open beams.

N7749C interface for two or four optical power heads

  • Controls the remote heads
  • Sample averaging times ranging from 100 µs to 10 s for all heads
  • Readout over LAN and USB interfaces with built-in web-browser GUI
  • SCPI command set common to Keysight optical power meters
  • Power values logged with dual-1M sample buffers for each head, to sample continuously with internal or external triggering
  • Uninterrupted simultaneous measurement and readout minimize overhead time for repetitive measurements
  • Family-wide, common trigger concept

Analog output port perfect for automated alignment

  • Direct feedback for optimization processes like fiber alignment with analog voltage outputs, at the remote head itself and from the N7749C front panel
  • Either linear proportional to the optical signal power or logarithmic over decades of power levels.

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