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High Power Linearity of the OMM-6810B and OMH-6780/90/95B Detector Heads

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High Power Linearity of the OMM-6810B and OMH-6780/90/95B Detector Heads

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Photodetectors are, by nature, very linear over a wide range of optical input powers, but the power meter electronics can affect the overall system linearity. The power meter linearity must be characterized and specified to know the measurement accuracy and linearity over the full dynamic range. The linearity specification for the OMM-6810B Optical Multimeter and OMH-6780B Power/WaveHead is ±0.05 dB. Tested with the power superposition method, the actual results for this particular power meter indicate the linearity over the full dynamic range is within ±0.012 dB. The linearity of the OMH-6790B/6795B Power/WaveHeads was verified using the same super position method.

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