New fiber-optic attenuator calibration technique using linear intensity modulation characteristics of a laser diode
R. Singh, T. Kawakami
Jun 25, 1999
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Journal
Review of Scientific Instruments
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Key Takeaway Key Takeaway: The new technique uses linear intensity modulation characteristics of a laser diode for fiber-optic attenuator calibration, achieving a resolution of 0.001 dB and a dynamic range of 25 dB in a single step.
Abstract
A new fiber-optic attenuator calibration technique has been developed using linear intensity modulation characteristics of a laser diode. It does not require detector linearity to be known. The uncertainty of attenuation calibration for a typical 10 dB attenuator is 0.020 dB at two standard deviation levels. The resolution of the system is 0.001 dB and the dynamic range is 25 dB in a single step.
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