Chii chinonzi fiber polarization controller?

Chii chinonzi fiber polarization controller?
Tsanangudzo: Chishandiso chinogona kudzora polarization mamiriro echiedza mune optical fibers. Vazhinjifiber optic zvishandiso, yakadai se interferometers, inoda kukwanisa kudzora mamiriro epolarization yechiedza mufiber. Naizvozvo, mhando dzakasiyana dzefiber polarization controllers dzakagadzirwa.
Bat ear controller mune bent optical fiber
A commonpolarization controllerinowanikwa nekukotama (kana mhepo) optical fibers kuwana birefringence. Kunonoka kwese (birefringence size) inoenzanirana nehurefu hwefiber uye inversely proportional kune inobhenda radius. Izvo zvakare zvine chekuita nerudzi rwe optical fiber. Mune zvimwe zviitiko, iyo optical fiber inogona kukuvadzwa kakawanda neyakakombama radius kuwana kunonoka kwe λ/2 kana λ/4.

Mufananidzo 1: Bat ear polarization controller, ine matatu fiber optic coils inogona kutenderera neaxis yechiitiko fiber.
Kazhinji, makoiri matatu anoshandiswa kugadzira mbiru, nepakati coil sehafu wave ndiro uye mativi maviri se quarter wave mahwendefa. Imwe neimwe coil inogona kutenderera ichitevedza axis yechiitiko uye inobuda optical fibers. Nekugadzirisa kutaridzika kwemakoiri matatu, iyo polarization mamiriro eiyo wavelength yechiitiko inogona kushandurwa kuita chero inobuda polarization state. Nekudaro, iko kukanganisa kwepolarization kunoenderanawo newavelength. Pamusoro pesimba repamusoro (kazhinji rinoitika mune ekupedzisira mapfupi pulses), nonlinear polarization kutenderera kunoitika. Iyo dhayamita yefiber optic coil haigone kuve idiki zvakanyanya, zvikasadaro kukotama kunounza kumwe kurasikirwa kwekukotama. Imwe yakawedzera compact mhando, uye isinganyanyi kutarisisa kune nonlinearity, inoshandisa iyo yakasimba birefringence (polarization kuchengetedza) ye optical fibers pane faibha coils.
CompressedFiber Polarization Controller
Iko kune mudziyo unogona kuwana akasiyana waveplates, ayo anogona kudzvanya kureba kweoptical fibers kune imwe nhanho pasi pekumanikidzwa kwakasiyana. Nekutenderera zvishoma nezvishoma uye nekudzvanya iyo optical fiber yakatenderedza axis yayo, uye nekuisungirira pane imwe chinhambwe kubva kuchikamu chekumanikidza, chero inobuda polarization state inogona kuwanikwa. Muchokwadi, kuita kwakafanana seBabinet Soleil compensator (rudzi rwehuwanduoptical deviceine maviri birefringent wedges) inogona kuwanikwa, kunyangwe maitiro avo ekushanda akasiyana. Multiple compression zvinzvimbo zvinogona zvakare kushandiswa, uko chete kumanikidza, kwete kutenderera kona, kunoshanduka. Kuchinja kwekumanikidza kunowanzo kuwanikwa uchishandisa piezoelectric transducers. Ichi chishandiso chinogona zvakare kushanda sepolarizer, uko piezoelectric inofambiswa nema frequency akasiyana kana masaini asina kujairika.