Optical Wireless Communication (OWC) yog ib hom kev sib txuas lus kho qhov muag uas cov teeb liab kis tau los siv tsis pom kev, infrared (IR), lossis ultraviolet (UV) lub teeb.
OWC systems ua hauj lwm ntawm pom wavelengths (390 - 750 nm) feem ntau hu ua pom lub teeb kev sib txuas lus (VLC).VLC systems coj kom zoo dua ntawm lub teeb-emitting diodes (leds) thiab tuaj yeem ua rau lub plawv dhia ceev heev yam tsis muaj kev cuam tshuam rau cov teeb pom kev zoo thiab tib neeg lub qhov muag.VLC tuaj yeem siv rau ntau yam kev siv xws li wireless LAN, wireless tus kheej LAN thiab tsheb sib txuas.Ntawm qhov tod tes, hauv av-raws li point-to-point OWC systems, tseem hu ua dawb qhov chaw optics (FSO), ua haujlwm ntawm ze-infrared zaus (750 - 1600 nm).Cov tshuab no feem ntau siv laser emitters thiab muab cov txiaj ntsig zoo raws tu qauv pob tshab txuas nrog cov ntaub ntawv siab (piv txwv li 10 Gbit / s ib lub wavelength) thiab muab cov kev daws teeb meem rau backhaul bottlenecks.Kev txaus siab rau kev sib txuas lus ultraviolet (UVC) kuj tseem nce ntxiv vim qhov kev nce qib tsis ntev los no hauv cov khoom siv hauv lub xeev lub teeb pom kev / cov khoom siv hauv lub hnub-dig muag UV spectrum (200 - 280 nm).Nyob rau hauv qhov no hu ua sib sib zog nqus ultraviolet band, hnub ci hluav taws xob yog negligible nyob rau hauv pem teb, ua tau tsim ib tug photon-count detector nrog ib tug wide-field receiver uas ua rau kom lub zog tau txais yam tsis muaj ntxiv suab nrov tom qab.
Tau ntau xyoo lawm, kev txaus siab hauv kev sib txuas lus kho qhov muag wireless tau txwv feem ntau rau cov ntawv thov tub rog tsis txaus ntseeg thiab cov ntawv thov hauv chaw suav nrog kev sib txuas ntawm lub satellite thiab qhov sib sib zog nqus.Txog rau tam sim no, OWC qhov kev nkag mus rau kev lag luam loj tau raug txwv, tab sis IrDA yog qhov ua tau zoo ntawm kev sib txuas lus luv luv wireless.
Los ntawm optical interconnection nyob rau hauv integrated circuits mus rau sab nraum zoov interbuilding txuas mus rau satellite kev sib txuas lus, variants ntawm optical wireless kev sib txuas lus muaj peev xwm yuav siv tau nyob rau hauv ntau yam kev sib txuas lus daim ntaub ntawv.
Optical wireless kev sib txuas lus tuaj yeem muab faib ua tsib pawg raws li kev sib kis:
1. Super luv nrug
Interchip kev sib txuas lus nyob rau hauv stacked thiab nruj packed multi-chip pob.
2. Kev ncua deb
Hauv tus qauv IEEE 802.15.7, kev sib txuas lus hauv qab dej hauv qab wireless Lub Cev Hauv Cheeb Tsam Network (WBAN) thiab wireless Personal Local Area Network (WPAN).
3. Qhov nruab nrab
Sab hauv IR thiab pom lub teeb sib txuas lus (VLC) rau wireless hauv cheeb tsam network (WLans) nrog rau kev sib txuas lus tsheb-rau-tsheb thiab tsheb-rau-tsim kev sib txuas lus.
Kauj Ruam 4: Chaw taws teeb
Interbuilding kev sib txuas, tseem hu ua qhov chaw dawb qhov chaw sib txuas lus (FSO).
5. Ntxiv nrug
Laser kev sib txuas lus hauv qhov chaw, tshwj xeeb tshaj yog rau kev sib txuas ntawm satellites thiab tsim cov hnub qub satellites.
Post lub sij hawm: Jun-01-2023