ILX Lightwave FPM-8210H – Fiber Optic Power Meter

The ILX Lightwave FPM-8210H is a fiber optic power meter designed for production test environments requiring accurate optical power measurements across broad wavelength ranges. It delivers repeatable results with minimal polarization dependence and supports both connectorized and bare fiber inputs through a single port. The instrument measures power from +33 dBm down to -40 dBm (wavelengths <1000 nm) with ±2.5% accuracy under reference conditions and ±5.0% across operating conditions.

Its InGaAs detector exhibits exceptional linearity (±0.02 dB, ±100 pW) and low polarization dependent response (±0.001 dB typical), making it ideal for component and subsystem characterization.

Technical Specifications

• Wavelength Range: 800 nm to 1650 nm


• Power Measurement Range: +33 dBm to -40 dBm (wavelengths +40 dBm


• Measurement Units: dB, dBm, Watt


• Accuracy: ±2.5% (reference conditions), ±5.0% (operating conditions)


• Polarization Dependent Response: ±0.001 dB typical


• Measurement Repeatability: ±0.003 dB typical


• Linearity: ±0.02 dB, ±100 pW (-60 dBm to +20 dBm)


• Noise Level: <700 pW at 980 nm typical


• Detector Type: InGaAs


• Analog Output: 0 to 10 V, 1000 Ω impedance typical, 0 to 10 Hz bandwidth typical


• Operating Temperature: 0 °C to 40 °C


• Storage/Transport Temperature: -40 °C to 70 °C


• Maximum Altitude: 3000 m

Key Features

• Single input port accommodates connectorized and bare fiber measurements


• Bare fiber measurement zone: 1–5 mm from holder with minimal result variation


• GPIB/IEEE interface standard for automated test integration


• Broad wavelength coverage (800 nm to 1650 nm) across telecommunications and industrial bands

Compatibility & Integration

• Compatible with ILX Lightwave BF-820 or Agilent 81000BA bare fiber holders (125 µm fiber diameter, 250 µm or 900 µm buffer)


• Adapter availability for FC, SC, LC and other common fiber optic connectors


• GPIB data transfer faster than measurement sample rate