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Optical Power Measurement Products

Multiport power meters

Standalone multiport instruments of the N774xC and predecessor N774xA families provide fast sampling, deep memory and fast data transfer, especially for multichannel applications.

Power sensor modules

Power sensor modules provide a front panel optical input that accepts various 81000xI connector interfaces for popular fiber connector types or bare fibers. Besides giving optical power in units of W or dBm or dB referred to a reference, calibrated for any wavelength in the available range, these advanced instruments provide high speed data logging of up to 20 k (100 k for the 81636B) values, triggered internally or externally.

Optical heads

Optical heads provide a 5 mm diameter detector area and allow flexible placement of the power meter which is then connected to the 81618A or 81619A interface module in the mainframe. The functionality is the same as for the sensor modules and a choice of adapters allows input from popular connector types, bare fibers or open beams.

Return loss modules

Return loss modules use two power sensors and fiber couplers to provide a direct measurement of the optical return loss. One sensor measures the optical power reflected back to the instrument while the other monitors the optical power output from the instrument. The ratio provides the return loss. These modules can use an external light source and can also be provided with internal Fabry-Perot lasers for very stable measurements.

  • N7747A Optical High Performance Power Meter (2 Channel) N7747A Optical High Performance Power Meter (2 Channel) 

    N7747A Optical High Performance Power Meter (2 Channel)

    • Power range: -110 dBm to +10 dBm
    • Wavelength range: 800 nm to 1700 nm
    • Logging memory: 2x 1M sample buffers per channel

  • N7748A Optical High Performance Power Meter (4 Channel) N7748A Optical High Performance Power Meter (4 Channel) 

    N7748A Optical High Performance Power Meter (4 Channel)

    • Power range: -110 dBm to +10 dBm
    • Wavelength range: 800 nm to 1700 nm
    • Logging memory: 2x 1M sample buffers per channel

  • N7744A Optical Multiport Power Meter N7744A Optical Multiport Power Meter 

    N7744A Optical Multiport Power Meter

    The popular Keysight N7744A optical power meter with four power-sensor channels offer industry-leading solutions for device connectivity, high-speed measurement data acquisition and fast data transfer for post-processing.

  • N7745A Optical Multiport Power Meter N7745A Optical Multiport Power Meter 

    N7745A Optical Multiport Power Meter

    The popular Keysight N7745A optical power meter with eight power-sensor channels offer industry-leading solutions for device connectivity, high-speed measurement data acquisition and fast data transfer for post-processing.

  • N7744C Optical Multiport Power Meter, 4 channels N7744C Optical Multiport Power Meter, 4 channels 

    N7744C Optical Multiport Power Meter, 4 channels

    • N7744C Optical Multiport Power Meter, 4 channels
    • 4 independent power channels with 1 µs minimum averaging time
    • Compact form factor, only 1 height unit
    • Connector concept separates connecting from measurement task

  • N7745C Optical Multiport Power Meter, 8 channels N7745C Optical Multiport Power Meter, 8 channels 

    N7745C Optical Multiport Power Meter, 8 channels

    • N7745C Optical Multiport Power Meter, 8 channels
    • 8 independent power channels with 1 µs minimum averaging time
    • Compact form factor, only 1 height unit
    • Connector concept separates connecting from measurement task

  • 81630B High Power Optical Sensor 81630B High Power Optical Sensor 

    81630B High Power Optical Sensor

    The Keysight 81630B provides measurement of high power levels in the convenient front-panel input format of the sensor modules. For measuring lasers and transmitters beyond 10mW, this is the sensor to choose.

  • 81634B Low Polarization Dependence Optical Power Sensor 81634B Low Polarization Dependence Optical Power Sensor 

    81634B Low Polarization Dependence Optical Power Sensor

    The Keysight 81634B is our most accurate power sensor with very low polarization and spectral ripple uncertainty and wide power range with a high sensitivity cooled detector that provides low noise.

  • 81635A Dual Optical Power Sensor 81635A Dual Optical Power Sensor 

    81635A Dual Optical Power Sensor

    The Keysight 81635A provides two power sensor channels in a single-slot module for reduced footprint in multichannel measurement setups.

  • 81636B Fast Optical Power Sensor 81636B Fast Optical Power Sensor 

    81636B Fast Optical Power Sensor

    The Keysight 81636B is built for speed, to support fast swept-wavelength measurements. It combines a short minimum averaging time of 25µs with high dynamic range without autorange delay.

  • 81620B Silicon Optical Power Head 81620B Silicon Optical Power Head 

    81620B Silicon Optical Power Head

    • 81620B Silicon Optical Power Head
    • Part of the 8162xB family of optical power heads
    • Provide accurate power measurements with a large area detector in a remote head for flexible positioning

  • 81623B Germanium Optical Power Head 81623B Germanium Optical Power Head 

    81623B Germanium Optical Power Head

    This optical power head has a 5 mm diameter Ge detector for general purpose power measurements over the wide wavelength range of 750-1800nm. A special version with Si detector for 450-1020 nm can be offered on request.

  • 81624B General Purpose Optical Power Head 81624B General Purpose Optical Power Head 

    81624B General Purpose Optical Power Head

    This power head with cooled 5mm InGaAs detector provides highest accuracy performance from 800-1700nm.

  • 81626B High Power Optical Head 81626B High Power Optical Head 

    81626B High Power Optical Head

    A built-in calibrated filter allows this head with InGaAs detector to measure power up to +27 dBm.

  • 81628B +40dBm Optical Power Head 81628B +40dBm Optical Power Head 

    81628B +40dBm Optical Power Head

    A built-in calibrated integrating sphere and detachable heatsink allows this head with InGaAs detector to measure power up to +40dBm.

  • 81610A Return Loss Module 81610A Return Loss Module 

    81610A Return Loss Module

    Keysight's 81610A Return Loss module is the tool of choice for measuring return loss (RL) and reflection of single-mode fiberoptic components.

  • 81613A Return Loss Module with integrated Laser Source 81613A Return Loss Module with integrated Laser Source 

    81613A Return Loss Module with integrated Laser Source

    The Keysight 81610A and 81613A Return Loss Meter are optimized for return loss applications with an external source across a broad wavelength range, but also with an integrated laser source at 1310/1550nm (81613A).

  • 81618A Single Optical Head Interface Module 81618A Single Optical Head Interface Module 

    81618A Single Optical Head Interface Module

    Interface Module to connect an optical head (8162x) to a lightwave system mainframe 8163A/B, 8164A/B or 8166A/B

  • 81619A Dual Optical Head Interface Module 81619A Dual Optical Head Interface Module 

    81619A Dual Optical Head Interface Module

    Interface Module to connect optical heads (8162x) to mainframe 8163A/B, 8164A/B or 8166A/B