The HP/Agilent 81594A is a 2×2 modular optical switch module designed for integration into Agilent’s Lightwave Solution Platform. It enables automated bi-directional optical signal routing for characterization and testing of optical components, amplifiers, line cards, and transmission systems across a broad wavelength spectrum. The module supports single-mode fiber with multiple connector options and delivers low insertion loss, exceptional crosstalk rejection, and high switching repeatability—making it ideal for BER testing, DWDM component validation, and transceiver characterization in automated test environments.
Technical Specifications
• Switch Configuration: 2×2 optical switch
• Wavelength Range: 1270 nm to 1650 nm
• Fiber Type: 9/125 µm single-mode fiber (SMF28)
• Insertion Loss: <0.8 dB (excluding connectors); <1.4 dB (including connectors)
• Polarization Dependent Loss (PDL): 10 million cycles
• Maximum Input Power: 300 mW
– Key Features
• Bi-directional signal paths
• Available connector options: FC/PC, FC/APC, SC/PC, SC/APC
• Compact form factor: 75 mm (H) × 32 mm (W) × 335 mm (D); 0.5 kg
• Operating temperature: 10 °C to 45 °C
• Warm-up time: 30 minutes
• Environmental rating: 95% humidity non-condensing
– Typical Applications
• Optical signal routing in automated test systems
• Bit error rate (BER) testing
• Optical amplifier characterization
• Transmission system validation
• DWDM component testing
• Active and passive optical component testing
• Transceiver and receiver validation
– Compatibility & Integration
Designed as a plug-in module for Agilent Lightwave Solution Platform mainframes: 8163A/B, 8164A/B, and 8166A/B. Compatible with standard single-mode optical fibers.











