ILX Lightwave OMH-6780B – Power/Wavehead

The ILX Lightwave OMH-6780B is a silicon-based power and wavelength measurement head designed for integration with the OMM-6810B Optical Power and Wavelength Meter. It delivers simultaneous optical power and wavelength measurement across the 830 nm to 1100 nm spectral band, making it ideal for characterizing pump laser diodes and other optical sources. The wavehead employs integrating sphere technology to ensure measurement accuracy independent of beam profile, detector saturation, alignment, and back reflection.

Temperature-controlled detectors maintain repeatable performance across ambient conditions while maximizing signal-to-noise ratio. A fiber exit port enables direct connection to an Optical Spectrum Analyzer (OSA) for extended spectral analysis. Wavelength accuracy of ±0.2 nm and power measurement accuracy of ±5.0% are maintained through NIST-traceable calibration performed in ILX's laboratory.

The compact 69 mm diameter × 28 mm height form factor accommodates diverse optical test benches.

Technical Specifications

• Spectral Range: 830 nm to 1100 nm


• Power Range: −40 dBm to +30 dBm (100 nW to 1 W)


• Wavelength Accuracy: ±0.2 nm


• Power Measurement Accuracy: ±5.0%


• Detector Type: Silicon


• Input Port Size: 5 mm


• Operating Temperature: +10°C to +40°C


• Storage Temperature: −20°C to +60°C


• Humidity: <85% RH, non-condensing


• Dimensions: 69 mm (diameter) × 28 mm (height)


• Weight: 0.38 kg

Key Features

• Integrating sphere design eliminates measurement errors from beam profile and back reflection


• Temperature-controlled detector maintains accuracy independent of ambient conditions


• Fiber exit port supports connection to OSA and complementary measurement instruments


• NIST-traceable calibration evaluated per NIST Technical Note #1297


• Calibrated at 21°C ±3°C at 10 nm intervals


• Interchangeable fiber optic adapters: FC, SC, LC, bare FC ferrule, bare fiber


• Compatible with 9/125 µm to 110/140 µm fiber (NA = 0.3)

Typical Applications

• Pump laser diode characterization


• Optical source power and wavelength verification


• High-accuracy spectral measurement requiring low polarization dependent response

Compatibility & Integration Designed for the OMM-6810B Optical Power and Wavelength Meter. Also compatible with the LPA-9080 series parameter analyzer.