The Keysight 81000BA is a bare fiber interface adapter engineered to connect 125 µm cladding diameter optical fibers to Agilent and Keysight optical heads. Built with precision-machined components, it provides a secure, stable connection for optical measurement systems requiring direct fiber integration. The adapter features a threaded head interface compatible with the 815xxx and 816xxx series optical head families, enabling straightforward integration into laboratory and production test environments.
Technical Specifications
• Fiber Type: Bare optical fiber with 125 µm cladding diameter
• Optical Head Series Compatibility: 815xxx and 816xxx families
• Specific Head Compatibility: 8152x and 8162x optical heads
• Interface Type: Threaded head adapter
• Construction: Precision-machined components
• Shipping Weight: Approximately 1 lb
• Mounting: Desktop mountable
– Key Features
• Direct bare fiber coupling with controlled cladding diameter specification
• Threaded interface design ensures repeatable, secure connections
• Precision machining delivers alignment stability required for optical measurements
• Compact desktop form factor suitable for benchtop and integrated rack configurations
– Typical Applications
• Optical power and energy measurements
• Spectral analysis and wavelength characterization
• Fiber-coupled sensor integration
• Laboratory-scale optical testing
– Compatibility & Integration
The 81000BA works within the broader 81000xx adapter ecosystem. Optional accessories expand system capability: Option 001 addresses 816xx series requirements, while Option 002 supports 815xx series configurations. Additional optical components—including single-mode and multi-mode fiber lenses (81010BL, 81050BL), integrating sphere (81002FF), and filter holders—integrate with this adapter for specialized measurement tasks.

















