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81578A Variable Optical Attenuator Module for Multimode Fiber Applications

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Starting From US$ 9,091

Typical Configuration  

Typical Configuration

81578A Opt attenuator, MM, straight, 700-1400nm

  • R-51B-001-C Return to Keysight Warranty - 1 year
  • 81578A-050 50/125 Micron fiber interface


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

  • High Input Power Level: 2W
  • Wide Wavelength Range: 700nm to 1400nm (MM)


The Keysight 81578A variable optical attenuator is designed for multimode fiber applications and features lowest insertion loss and excellent wavelength flatness over a complete attenuation range of 60 dB, for characterizing optical network components for telecomunication and data communication in systems.


  • Built-in Shutter for Power Meter Zeroing
  • Built-in Calibration Capability


  • The integrated shutter protects test equipment and simplifies referencing and power meter zeroing without changes in the setup.
  • Enhanced internal calibration feature reduces uncertainties and speeds up calibration in multi wavelength applications.