The Newport 918D is a universal fiber optic detector for optical power measurements spanning 410 nm to 1650 nm. Built with an integrating sphere design and dual-detector architecture (InGaAs and Silicon), it delivers accurate readings across diverse fiber types and operating conditions. The detector accommodates power levels from 1 nW to 350 mW (918D-IS-1) with ±0.5% linearity and ±2% uniformity. A DB15 connector pigtail integrates directly with Newport power meters, while interchangeable fiber adapters support bare fiber and standard connector types. Switchable attenuators (OD1, OD2, OD3) extend dynamic range to several watts in high-power configurations. Rise time of ≤3 µs enables pulse energy measurement up to 100 µJ. Calibration uncertainty ranges from 1.1% to 2.6% across the operating band, with temperature compensation ensuring stable performance across environmental variation.
Technical Specifications
• Detector Type: Integrating sphere with dual detector (InGaAs and Silicon)
• Spectral Range: 410 nm to 1650 nm (918D-IS-1); 800 nm to 1650 nm (918D-IS-IG); 400 nm to 1100 nm (918D-IS-SL)
• Sensor Size: 2.4 × 2.8 mm (Si), Ø1.5 mm (InGaAs) for 918D-IS-1; 10 × 10 mm for 918D-ST-UV/SL
• Power Measurement Range: 1 nW to 200 mW (918D-IS-1); -60 to 24 dBm
• Maximum Measurable Power: 350 mW (918D-IS-1)
• Maximum Power Density: 30 W/cm²; 0.2 W/cm² without attenuator
• Maximum Pulse Energy: 100 µJ (918D-IS-1); 0.5 nJ without attenuator
• Linearity: ±0.5%
• Uniformity: ±2%
• Rise Time: ≤3 µs
• Calibration Uncertainty: 1.1% (430–700 nm), 2.4% (700–1430 nm), 2.6% (1430–1600 nm)
– Key Features
• Dual InGaAs/Silicon detector reduces temperature sensitivity drift
• Switchable attenuators (OD1, OD2, OD3) available in select models
• DB15 connector pigtail for direct Newport power meter integration
• Interchangeable fiber adapter kit for multiple connector and bare fiber configurations
– Typical Applications
• Fiber optic system characterization
• Laser power and energy measurement
• Optical communication link validation
• Pulsed laser analysis
– Compatibility & Integration
DB15 connector pigtail provides plug-and-play integration with Newport power meter platforms. Modular adapter design accommodates standard single-mode, multimode, and bare fiber launch geometries.
