Here’s the page we think you wanted. See search results instead:


Contact an Expert

8156A Optical Attenuator

Product Status: Obsolete | View Service Options
This product is no longer available

A replacement for this product is available:

Key Features & Specifications

  • 60dB attenuation with 0.001dB resolution, without ranging
  • 1200nm to 1650nm wavelength range
  • 60dB return loss
  • +23dBm maximum input power


The Keysight 8156A optical attenuator is ideal for making measurements on fast telecommunication systems. It is employed in R&D and production and is suitable for both single-mode and 50m multi-mode application. A variety of options for different return loss performance, built-in monitor paths and overall accuracy make the 8156A easily adaptable to your measurement requirements.