Agilent 81594B Optical Switch Module 2x2 Single-Mode 9 / 125 µm

The Agilent 81594B Optical Switch Module is a 2×2 single-mode (9/125 µm) plug-in switch designed for Lightwave System platforms (8163A/B, 8164A/B, 8166A/B) to facilitate automated optical signal routing in telecom and component testing environments. It delivers low insertion loss (< 1.5 dB), excellent polarization-dependent loss (PDL < 0.05 dB), and high repeatability (±0.02 dB across 10,000 random cycles) with a guaranteed lifetime exceeding 10 million switching operations and sub-10 ms switching speed. Its non-blocking 2×2 matrix accommodates both single-mode and multimode variants via FC/APC connectors, supporting wide wavelength ranges (SM: 1270–1670 nm; MM: 700–1400 nm). Hot-swap capable and compatible with both Agilent and Keysight platforms, the 81594B enables compact, scalable configurations ideal for automated testing of transceivers, amplifiers, passive components, and mixed-system cascades. Through GPIB or mainframe control, it simplifies integration into production and R&D lineups, delivering reliable, low-noise signal switching for high-throughput optical characterization tasks.