Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Manuel d'utilisateur télécharger pdf (Page 527)

100

101

Optical Spectrum Analyzer 519

C Formulas Used with Your

Optical Spectrum Analyzer

The following formulas are used in the various tests available with your

OSA module.

EDFA Noise Figure Calculation

According to EDFA theory, this measurement is obtained using the

following equation:

Where

ASE

is the power of the spontaneous emission amplified by the EDFA,

SSE

is the power of the spontaneous emission of the source,

G is the gain at this channel’s wavelength,

h is Plank’s constant (6,6256 x 10

-34

ν is the frequency of the channel, and

B is the noise equivalent bandwidth, as calibrated at this channel’s

wavelength.

EDFA noise figure

ASE

SSE

–

GhνB

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Js⋅

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Exfo FTB -5240S/5240BP Optical Spectrum Analyzer for FT Manuel d'utilisateur Page 527

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