Yintoni i-“cyclic fiber ring”?Wazi kangakanani ngayo?
Ingcaciso: Iringi yefiber optical apho ukukhanya kunokujikeleza amaxesha amaninzi
Iringi yefiber cyclic yiisixhobo sefiber opticapho ukukhanya kunokujikeleza ukubuya naphambili amaxesha amaninzi.Isetyenziswa kakhulu kwinkqubo yonxibelelwano lwefiber yomgama omde.Nokuba ngobude obunomda wei-fiber optical, ukukhanya komqondiso kunokudluliselwa kumgama omde ngokujija amaxesha amaninzi.Oku kunceda ukufunda imiphumo eyingozi kunye ne-optical nonlinearity echaphazela umgangatho wokukhanya wesignali.
Kwitekhnoloji ye-laser, i-cyclic fiber loops ingasetyenziselwa ukulinganisa ububanzi bomgca we-alaser, ngakumbi xa ububanzi bomgca buncinci kakhulu (<1kHz).Oku kukwandiswa kwendlela yokulinganisa umgca we-self-heterodyne, engadingi i-laser yereferensi eyongezelelweyo ukufumana isignali yereferensi evela kuyo, efuna ukusetyenziswa kweefayili ezide ze-single-mode.Ingxaki ngeteknoloji yokufumanisa i-self-heterodyne kukuba ukulibaziseka kwexesha elifunekayo kulandelelwano olufanayo kunye nokuphindaphinda kobubanzi bomgca, ukwenzela ukuba ububanzi bomgca bube yi-kHz embalwa, kwaye nangaphantsi kwe-1kHz ifuna ubude obukhulu kakhulu befiber.
Umzobo 1: I-Schematic diagram ye-cyclic fiber ring.
Isizathu esisisiseko sokusebenzisa i-fiber loops kukuba umsinga wobude obuphakathi unokubonelela ukulibaziseka kwexesha elide kuba ukukhanya kuhamba ngeendlela ezininzi kwifiber.Ukuze ukwahlula ukukhanya okugqithiswe kwii-loops ezahlukeneyo, imodyuli ye-acousto-optic ingasetyenziselwa kwi-loop ukuvelisa i-frequency shift ethile (umzekelo, i-100MHz).Ngenxa yokuba olu tshintsho lwefrikhwensi lukhulu kunobubanzi bomgca, ukukhanya okuhambe inani elahlukileyo lokujika kwiluphu kunokwahlulwa kwisizinda samaza.Kwiisixhobo sokufota, eyokuqalaukukhanya laserkunye nokubetha kokukhanya emva kokutshintsha okuphindaphindiweyo kungasetyenziselwa ukulinganisa ububanzi bomgca.
Ukuba akukho sixhobo sokukhulisa kwiluphu, ilahleko kwimodyuli ye-acousto-optic kunye nefayibha inkulu kakhulu, kwaye ukukhanya kokukhanya kuya kubola ngokunzulu emva kweelophu ezininzi.Oku kunciphisa kanobom inani leerhiphu xa umlinganiselo womgca ulinganiswa.I-Fiber amplifiers inokongezwa kwi-loop ukuphelisa lo mda.
Nangona kunjalo, oku kudala ingxaki entsha: nangona ukukhanya okudlula ngeendlela ezahlukeneyo kuhluke ngokupheleleyo, isibonakaliso sokubetha sivela kwizibini ezahlukeneyo zeefotoni, ezitshintsha i-spectrum yokubetha ngokupheleleyo.Umsesane wefiber optical ungalungiswa ngokufanelekileyo ukuthintela ezi ziphumo.Ekugqibeleni, uvakalelo lwe-cyclic fiber loop lukhawulelwe yingxolo yeiamplifier ifayibha.Kwakhona kuyimfuneko ukuqwalasela ukungahambi kakuhle kwefiber kunye nemigca engeyiyo iLorentz ekuqhutyweni kwedatha
Ixesha lokuposa: Dec-12-2023