Taolo ea polarization ea fiber ke eng?

Taolo ea polarization ea fiber ke eng?
Tlhaloso: Sesebelisoa se ka laolang boemo ba polarization ba leseli likhoeleng tsa optical. Tse ngatalisebelisoa tsa fiber optic, joalo ka li-interferometer, li hloka bokhoni ba ho laola boemo ba polarization ea leseli ka har'a faeba. Ka hona, ho ntlafalitsoe mefuta e fapaneng ea balaoli ba polarization ea faeba.
Taolo ea litsebe tsa matata ka faeba ea optical e kobehileng
E tloaelehilengmolaoli oa polarizatione fihlellwa ka ho koba (kapa ho phethola) difaeba tsa optical ho fumana birefringence. Tieho yohle (boholo ba birefringence) e lekana le bolelele ba faeba mme e lekana ka tsela e fapaneng le radius e kobehileng. E boetse e amana le mofuta wa faeba ya optical. Maemong a mang, faeba ya optical e ka kobeha ka makgetlo a mmalwa ka radius e itseng e kobehileng ho fumana tieho ya λ/2 kapa λ/4.

Setšoantšo sa 1: Taolo ea polarization ea litsebe tsa makhoaba, e nang le likhoele tse tharo tsa fiber optic tse ka potolohang ho latela axis ea fiber ea ketsahalo.
Hangata, dikhoele tse tharo di sebediswa ho etsa kholomo, moo khoele e bohareng e leng poleiti ya leqhubu la halofo mme mahlakore a mabedi e le dikhoele tsa leqhubu la kotara. Khoele ka nngwe e ka potoloha ho latela axis ya ketsahalo le dikhoele tsa optical tse tswang. Ka ho fetola tsela eo dikhoele tse tharo di shebaneng ka yona, boemo ba polarization ba bolelele bo itseng ba incidence bo ka fetolwa ho ba boemo bofe kapa bofe ba polarization ya tlhahiso. Leha ho le jwalo, tshusumetso ho polarization e boetse e amana le bolelele ba leqhubu. Matla a phahameng a tlhoro (hangata a hlahang ka di-pulse tse kgutshwane haholo), ho potoloha ha polarization e seng ya mola ho a etsahala. Bophara ba khoele ya optic ya fiber e ke ke ya ba nyane haholo, ho seng jwalo ho kobeha ho tla hlahisa tahlehelo e eketsehileng ya ho kobeha. Mofuta o mong o monyane haholo, mme o sa ameheng haholo ho se be le mola, o sebedisa birefringence e matla (poloko ya polarization) ya dikhoele tsa optic ho ena le dikhoele tsa faeba.
E hatelitsoeFaeba karohanyo molaoli
Ho na le sesebelisoa se ka fumanang li-waveplate tse feto-fetohang, tse ka hatellang bolelele ba likhoele tsa optical ho isa bohōleng bo itseng tlas'a likhatello tse fapaneng. Ka ho potoloha butle-butle le ho hatella khoele ea optical ho potoloha axis ea eona, le ho e tiisa sebakeng se itseng ho tloha karolong ea khatello, boemo bofe kapa bofe ba polarization ea tlhahiso bo ka fumanoa. Ha e le hantle, ts'ebetso e tšoanang le ea Babinet Soleil compensator (mofuta oa bongata).sesebelisoa sa opticale nang le di-wedge tse pedi tsa birefringent) e ka fumanwa, leha melaomotheo ya yona ya tshebetso e fapane. Maemo a mangata a kgatello a ka boela a sebediswa, moo kgatello feela, eseng sekhutlo sa ho potoloha, e fetohang. Diphetoho tsa kgatello hangata di fihlellwa ho sebediswa di-transducer tsa piezoelectric. Sesebediswa sena se ka boela sa sebetsa e le polarizer, moo piezoelectric e tsamaiswang ke maqhubu a fapaneng kapa matshwao a sa reroang.