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High-power and high-accuracy integrating sphere radiometer: design, characterization, and calibration
Ana Carrasco-Sanz1, Sonia Martín-López, Pedro Corredera
1Instituto de Física Aplicada, Consejo Superior de Investigaciones Científicas, Madrid, Spain.
Applied Optics
|February 9, 2006
Summary
A new high-power fiber optic power meter was developed for accurate measurements. This transfer standard achieves less than 0.8% uncertainty across a wide dynamic range and spectral band.
Area of Science:
- Optical Engineering
- Metrology
- Fiber Optics
Background:
- Accurate optical power measurements are critical for fiber optic systems.
- Existing transfer standards may have limitations in power range or accuracy.
- High-power measurements require specialized instrumentation.
Purpose of the Study:
- To design, characterize, and calibrate a novel high-power transfer standard for optical power.
- To establish a reliable instrument for accurate fiber optic power measurements.
- To achieve high accuracy across a broad power and spectral range.
Main Methods:
- Development of an integrating sphere radiometer.
- Calibration using an electrically calibrated pyroelectric radiometer.
- Utilized four tunable laser diodes for spectral calibration.
- Characterization across a -50 to +30 dBm power range.
Main Results:
- The integrating sphere radiometer demonstrated high accuracy.
- Calibration was performed in the 1250-1650 nm spectral range.
- Achieved a total uncertainty of less than +/-0.8%.
Conclusions:
- The developed transfer standard meets the requirements for high-power, high-accuracy optical measurements.
- The instrument is suitable for demanding fiber optic applications.
- The calibration methodology ensures reliable performance.
