Nyob rau hauv multimode fiber v-number yog?

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Nyob rau hauv multimode fiber v-number yog?
Nyob rau hauv multimode fiber v-number yog?

Video: Nyob rau hauv multimode fiber v-number yog?

Video: Nyob rau hauv multimode fiber v-number yog?
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Tus V-tus lej txhais tau tias: qhov twg V yog qhov nquag nquag (V-tus lej), a yog lub vojvoog fiber ntau, thiab λ yog qhov chaw dawb. Multimode fibers muaj V-tus lej loj heev; Piv txwv li, Ø50 µm core, 0.39 NA multimode fiber ntau ntawm lub wavelength ntawm 1.5 µm muaj V-tus naj npawb ntawm 40.8

V tus lej ntawm fiber ntau yog dab tsi?

V tus lej yog a qhov tsis muaj qhov ntsuas uasfeem ntau siv rau hauv cov ntsiab lus ntawm cov kauj ruam-index fibers. Nws yog txhais raws li. qhov twg λ yog lub tshuab nqus tsev vacuum, a yog lub vojvoog ntawm cov tub ntxhais fiber ntau, thiab NA yog tus lej aperture.

Koj txhais tus lej V li cas?

V-Number lossis Normalized Frequency

V - tus lej txiav txim siab pes tsawg hom fiber ntau tuaj yeem txhawb nqa, Nws muab los ntawm, qhov twg d yog txoj kab uas hla ntawm core, l yog lub wavelength ntawm lub teeb siv thiab NA yog tus lej aperture ntawm fiber.

V tus lej rau ib hom fiber ntau yog dab tsi?

Ib hom fiber ntau muaj V tus lej uas yog tsawg dua 2.405, rau feem ntau qhov muag pom qhov wavelengths. Nws yuav nthuav tawm lub teeb nyob rau hauv ib qho kev coj ua hom. Ib hom fiber ntau muaj V tus naj npawb uas ntau dua 2.405, rau feem ntau qhov muag wavelength thiab yog li ntawd yuav nthuav tawm hauv ntau txoj hauv kev los ntawm fiber ntau.

V tus lej yog dab tsi los yog cov zaus ntawm fiber ntau?

Rau ib hom fiber ntau, nws yuav tsum tau ua kom lub cev muaj zog, txaus siab rau tus mob V < 2.4048 . Rau ib kauj ruam index fiber, hom ntim ntawm fiber ntau yog directionally proportional rau lub square ntawm normalized zaus, uas yog V2.

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