Cov txheej txheem:
- Leej twg nrhiav tau photonic crystals?
- Vim li cas photonic siv lead ua fiber ntau tsis zoo li optical fiber?
- Thaum twg optical fibers tawm?
- Photonic siv lead ua fiber ntau ua li cas?
Video: Thaum twg photonic siv lead ua fibers tsim?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
A photonic siv lead ua fiber ntau ua los ntawm 2D photonic siv lead ua nrog cov tub ntxhais huab cua tau tsim los ntawm P. Russell hauv 1992 thiab thawj PCF tau tshaj tawm ntawm Optical Fiber Conference (OFC) xyoo 1996 [2].
Leej twg nrhiav tau photonic crystals?
Prof Eli Yablonovitch ntawm University of California, Berkeley, tau npaj thiab tsim cov muaju hauv xyoo 1980s. Tam sim no lawv tau siv rau hauv cov ntaub ntawv ua thiab hauv yoj taw qhia rau kev phais laser; Lawv kuj tau pom nyob rau hauv noog plaub thiab daim tawv nqaij ntawm chameleons.
Vim li cas photonic siv lead ua fiber ntau tsis zoo li optical fiber?
Vim nws lub peev xwm los kaw lub teeb hauv hollow cores lossis nrog cov yam ntxwv kaw tsis tau hauv cov khoom siv kho qhov muag, PCF tam sim no nrhiav kev siv hauv kev sib txuas lus fiber ntau, fiber ntau lasers, cov khoom siv uas tsis yog-linear, kev xa xov hluav taws xob siab, cov pa roj rhiab heev, thiab lwm qhov chaw.
Thaum twg optical fibers tawm?
Optical fiber ntau tau ua tiav hauv 1970 los ntawm Corning Glass Works, nrog attenuation qis txaus rau kev sib txuas lus (kwv yees 20 dB / km) thiab tib lub sijhawm GaAs semiconductor lasers tau tsim kom muaj kev sib cog lus thiab yog li tsim nyog rau kev xa lub teeb los ntawm fiber ntau optic cables kom ntev mus.
Photonic siv lead ua fiber ntau ua li cas?
Cov nyhuv bandgap - qis qhov taw qhia fibers
Photonic bandgap fibers yog raws li lub cev mechanisms fundamentally txawv ntawm M-TIR guiding fibers. … Hauv PBG fiber ntau, cov tub ntxhais yog tsim los ntawm kev qhia txog qhov tsis xws luag hauv PBG qauv (xws li lub qhov cua ntxiv), yog li tsim kom muaj thaj chaw uas lub teeb tuaj yeem nthuav tawm.
Pom zoo:
Kuv yuav tsum siv roj av lead lossis tsis muaj lead?
Tsheb tsim rau cov roj txhuas tsis ua haujlwm zoo nrog cov hloov pauv niaj hnub no. Cov hlau lead yog xav tau los tiv thaiv cov tebchaw hauv cov roj li qub thiab tsis muaj nws, cov cav qub tuaj yeem raug kev puas tsuaj loj thiab hnav . Qhov twg yog qhov zoo tshaj plaws tsis muaj txhuas lossis cov roj txhuas?
Qhov twg siv iodine siv lead ua?
Iodine crystals muaj dav thiab muaj kev siv raws cai hauv qab no: Raws li cov khoom siv los ua cov tshuaj thiab polymers, kev huv thiab ntxuav cov tebchaw, tshuaj, nylon fibers, dyes thiab number case, thiab cov duab thaij duab . Puas yog iodine crystals txhaum cai?
Cov khoom siv photonic yog dab tsi?
Cov khoom siv yees duab yog cov khoom tsim, tswj lossis ntes lub teeb. Qhov no tuaj yeem suav nrog laser diodes, lub teeb-emitting diodes, hnub ci thiab photovoltaic hlwb, cov lus qhia thiab cov khoom siv kho qhov muag . Lub tshuab hluav taws xob ua haujlwm li cas?
Thaum twg yog qhov tsaus ntuj siv lead ua lub caij 2?
Yuav tsis muaj Lub Caij 2 rau Lub Tsaus Ntuj Tsaus Ntuj: Hnub Nyoog Tawm Tsam. Netflix tau lees paub qhov kev tshem tawm hnub Monday ntawm Jim Henson's epic fantasy taug txuj kev nyuaj series - prequel rau thawj 1982 zaj duab xis - tsuas yog ob peb teev tom qab cov yeeb yaj kiab yeej lub asthiv no ntawm Creative Arts Emmys rau Cov Menyuam Zoo Tshaj Plaws .
Nematic kua siv lead ua siv nyob qhov twg?
Vim tias lawv lub teeb kis tau tus mob tuaj yeem txhob txwm hloov pauv raws li kev ua haujlwm ntawm kev siv hluav taws xob sab nraud, cov kua dej nematic yog siv nyob rau hauv alphanumeric kua-crystal displays (LCD s), xws li cov pom hauv digital wristwatches thiab ntau tus neeg siv khoom siv hluav taws xob Vim li cas thiaj siv nematic kua siv lead ua?
