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81595B Modular Optical Switches

Data Sheets


The Keysight Technologies, Inc. 81595B 1x4 optical switch module is available for both single-mode and multimode fiber applications. These can be used in all Keysight 816x Lightwave mainframes and support automation while improving measurement repeatability. The multimode switch has excellent mode fidelity.

  • 81595B Option 009: 1x4 switch for single-mode fiber
  • 81595B  Option 062: 1x4 switch for multimode fiber

Modular Design for Solution Platform

These modules enable manufacturers of optical and network components to automate their processes by routing optical signals when testing devices such as line cards, amplifiers, and active and passive components. Adding modular optical switches to this instrument platform allows flexible and cost effective all-in-one solutions to be developed for optical component test in automated test environments.

Switching Reduces Uncertainty from Connections and Eases

Test Automation

These modular switches can be used to avoid repeated reconnections during your measure­ments and are critical to automated procedures. The low IL and PDL and high repeatability assure minimum impact of the switch on measurement accuracy.

Switching can be performed from the button on the module, from the mainframe interface and via GPIB control. The compact form and high performance allow combining switches for multistage setups, like five 1x4 modules.

Modal Fidelity for Multimode Fiber Systems

Signals in multimode fibers are distributed over a range of mode groups that can have dif­ferent loss and delay in a link. For dependable multimode transceiver testing, the instrument used to set the power level should not change this modal distribution. The Keysight multimode switches are designed with very short, collimated paths between fiber, so signals propagate in practically the same distribution as through uninterrupted multimode fiber.


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