State Primary Standard of Units of Average Power in a Pulse of Radiation, Power of Continuous Radiation in a Fiber and Time of Distribution of Radiation in a Fiber

Reproduction and maintenance of units of average power in a pulse of radiation (Watt) in the wavelength range from 0,4 μm to 1,6 μm; pulse duration range – from 5⋅10-8 s to 2⋅10-7 s, pass frequency range – from 100 Hz to 5 MHz; power of continuous radiation in a fiber (Watt) and time of distribution of radiation in a fiber (second) at fixed wavelengths in the wavelength range from 0,8 μm to 1,7 μm.

 

Transferring of the size of units:

  • average power in a pulse of radiation by the method of direct measurements;
  • power of continuous radiation in a fiber by the method of direct verification;
  • time of distribution of radiation in a fiber by the method of indirect measurements

to working standards and directly to the working devices used for monitoring and control of fiber-optic data transmission systems.

 

 

Metrological characteristics

Range

from 1⋅10-9 W to 1⋅10-2 W

(for continuous radiation)

from 1⋅10-6 W to 1⋅10-2 W

(for the radiation pulse)

from 1,5⋅10-8 s to 1,5⋅10-3 s

(for the time of distribution in the fiber)

Uncertainty by type A (uA)

1⋅10-2

2⋅10-2

(1⋅10-11+0,5⋅10-6⋅T) s

Uncertainty by type B (uB)

0,5⋅10-2

2⋅10-2

(0,8⋅10-11+0,8⋅10-6⋅T) s

Total standard uncertainty (uC)

1,1⋅10-2

2,8⋅10-2

(1,3⋅10-11+0,95⋅10-6⋅T) s

Extended uncertainty (U)

2,2⋅10-2

5,7⋅10-2

(2,6⋅10-11+1,9⋅10-6⋅T) s