Title :
A calorimeter for μW level optical power transfer standard
Author :
Suzuki, Yasuyuki ; Chida, Naomichi ; Komiyama, Makoto
Author_Institution :
Yokogawa Electr. Corp., Yamanashi, Japan
fDate :
2/1/1992 12:00:00 AM
Abstract :
A calorimeter which can measure microwatt-level optical power has been developed for an optical power transfer standard. It can measure the optical power of a light beam and can be used with optical fiber simply by attaching an adapter. This calorimeter sensor uses a compensative absorber to reduce the influence of pressure fluctuation and temperature variation in the measurement room and an ultra-low-noise preamplifier. With this calorimeter, the standard deviation of the measured value is in the range of 0.02-0.4% in 20-mW to 10-μW optical power measurements. An error evaluation for an optical power level of 10 μW yielded a two-sigma (two standard deviation) total uncertainty of 0.9%
Keywords :
calorimeters; measurement standards; optical variables measurement; power measurement; 20 mW to 10 muW; calorimeter; compensative absorber; error; light beam; optical fibre parameters measurement; optical power transfer standard; pressure fluctuation; standard deviation; temperature variation; Fluctuations; Joining processes; Measurement standards; Optical fibers; Optical sensors; Power measurement; Preamplifiers; Pressure measurement; Standards development; Temperature sensors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
