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IEVref:731-03-43ID:
Language:enStatus: Standard
Term: phase coefficient
Synonym1: phase constant (term deprecated) (US)
[Preferred]
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Symbol: β
Definition: the imaginary part of the propagation coefficient

NOTE – The phase coefficient of an optical waveguide is the limit of the phase change of a field quantity between two points on the axis of the guide divided by the distance between the points when this distance tends to zero.


Publication date:1991-10
Source:702-02-15
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