Iyini i-“cyclic fiber ring”?Kungakanani okwaziyo ngakho?
Incazelo: Iringi ye-fiber optical lapho ukukhanya kungajikeleza izikhathi eziningi
Indandatho ye-cyclic fiber iyi-aidivayisi ye-fiber opticlapho ukukhanya kungajikeleza ukuya emuva naphambili izikhathi eziningi.Isetshenziswa kakhulu ohlelweni olude lokuxhumana lwefiber optical.Ngisho nobude obulinganiselwe bei-fiber optical, ukukhanya kwesignali kungadluliswa ebangeni elide kakhulu ngokujika izikhathi eziningi.Lokhu kusiza ukufunda imiphumela eyingozi kanye nokungaqondile kwe-optical okuthinta ikhwalithi yokukhanya yesiginali.
Kubuchwepheshe be-laser, amaluphu e-cyclic fiber angasetshenziswa ukukala ububanzi bomugqa alaser, ikakhulukazi uma ububanzi bomugqa buncane kakhulu (<1kHz).Lesi isandiso sendlela yokulinganisa yobubanzi bomugqa we-self-heterodyne, engadingi i-laser yereferensi eyengeziwe ukuze ithole isignali yereferensi kuyo ngokwayo, edinga ukusetshenziswa kwemicu ende yemodi eyodwa.Inkinga ngobuchwepheshe bokuthola i-self-heterodyne ukuthi ukubambezeleka kwesikhathi esidingekayo kuwuhlelo olufanayo njengokuphindaphinda kobubanzi bomugqa, ukuze ububanzi bomugqa bube yi-kHz embalwa kuphela, futhi nangaphansi kuka-1kHz budinga ubude befayibha obukhulu kakhulu.
Umfanekiso 1: Umdwebo wohlelo lwendandatho ye-fiber cyclic.
Isizathu esiyisisekelo sokusebenzisa i-fiber loops ukuthi ifayibha enobude obumaphakathi inganikeza ukulibaziseka kwesikhathi eside ngoba ukukhanya kuhamba amajika amaningi kufiber.Ukuze kuhlukaniswe ukukhanya okudluliselwe kumaluphu ahlukene, imoduli ye-acousto-optic ingasetshenziswa ku-loop ukukhiqiza ukushintsha kwefrikhwensi ethile (isibonelo, 100MHz).Ngenxa yokuthi lokhu kushintsha kwefrikhwensi kukhulu kakhulu kunobubanzi bomugqa, ukukhanya okuhambe inombolo ehlukile yokujika kuluphu kungahlukaniswa kusizinda sefrikhwensi.Kwei-photodetector, owokuqalaukukhanya kwe-laserkanye nokushaya kokukhanya ngemva kokushintsha imvamisa kungasetshenziswa ukukala ububanzi bomugqa.
Uma ingekho idivayisi yokukhulisa iluphu, ukulahlekelwa kumoduli ye-acousto-optic kanye nefayibha kukhulu kakhulu, futhi amandla okukhanya azobola kakhulu ngemva kwezihibe ezimbalwa.Lokhu kunciphisa kakhulu inani lamaluphu lapho kukalwa ububanzi bomugqa.Ama-amplifiers e-Fiber angangezwa ku-loop ukuze kuqedwe lo mkhawulo.
Nokho, lokhu kudala inkinga entsha: nakuba ukukhanya okudlula emajikeni ahlukene kuhluke ngokuphelele, isiginali yebhithi ivela kumapheya ahlukene ama-photon, ashintsha i-spectrum yebhithi iyonke.Iringi ye-fiber optical ingaklanywa ngokunengqondo ukuvimbela le miphumela.Okokugcina, ukuzwela kwe-cyclic fiber loop kunqunyelwe umsindo we-i-fiber amplifier.Kuyadingeka futhi ukucabangela ukungahambisani kwefayibha kanye nemigqa engeyona eye-Lorentz ekucutshungulweni kwedatha
Isikhathi sokuthumela: Dec-12-2023