сюRю

\aPsV(r)rdr jacoreV4(r>dr \aslO2¥4(r)rdr

а рэл ——+—

(12)

IV rdrj V rdrj V rdr

000

— acore < V >core +a SiO2 < V > clad ,

где R - радиус сердцевины, а < V >core и < Vi>clad определяются как:

R

jV4(r )rdr

<V >core —Ю-,(13)

core ю

,4

jV4(r )rdr

jV4(r )rdr

<V >clad —i-.(14)

00

jV4(r )rdr

Откуда несложно получить величину рэлеевского рассеяния в однородно легированной сердцевине световода:

4

а — а рэл ~aSiO 2 < V >clad(15)

<V > core

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0

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