Title :
New technique for measuring low fiber-optic attenuation using double square-law detection
Author :
Singh, Ranjit ; Kawakami, Tomoteru
Author_Institution :
Electrotech. Lab., Tsukuba, Japan
fDate :
2/1/2000 12:00:00 AM
Abstract :
A new technique for precision measurement of low fiber-optic attenuation has been developed using double square-law characteristics in a subcarrier lightwave detection system. It magnifies the effect of a small attenuation four times and a 0.01 dB change in optical attenuation produces a 0.04 dB change in electrical attenuation. The present system is capable of measuring attenuation changes less than 0.01 dB with system resolution 0.001 dB
Keywords :
attenuation measurement; calibration; intensity modulation; optical fibre losses; optical fibre testing; optical loss measurement; optical signal detection; calibration; double square-law characteristics; electrical attenuation; inductive voltage divider; low fiber-optic attenuation; optical attenuation; optical fiber losses; optical frequency conversion; precision measurement technique; small attenuation effect; subcarrier lightwave detection system; Attenuation measurement; Calibration; Frequency conversion; Frequency measurement; Loss measurement; Optical attenuators; Optical fibers; Optical modulation; RF signals; Radio frequency;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
