Chii chinonzi fiber polarization controller?

Chii chinonzi fiber polarization controller?
Tsanangudzo: Mudziyo unogona kudzora mamiriro e polarization yechiedza mu optical fibers. Mazhinjizvishandiso zve fiber optic, sema interferometer, anoda kugona kudzora mamiriro e polarization yechiedza mu fiber. Nokudaro, mhando dzakasiyana dze fiber polarization controllers dzakagadzirwa.
Chinodzora nzeve dzemabat mufiber ye optical yakakombama
Chinhu chakajairikamutongi wepolarizationKunogadzirwa nekukombamisa (kana kumonera) mafiber e optical kuti uwane birefringence. Kunonoka kwese (birefringence size) kunoenderana nehurefu hwefiber uye kunoenderana ne radius yekumonera. Zvine chekuitawo nerudzi rwe fiber ye optical. Mune zvimwe zviitiko, fiber ye optical inogona kuputirwa kakawanda ne radius chaiyo yekumonera kuti iwane kunonoka kwe λ/2 kana λ/4.

Mufananidzo 1: Chinodzora hunyanzvi hwenzeve dzebat, chine ma fiber optic coil matatu anogona kutenderera achitevedza axis ye incident fiber.
Kazhinji, ma coil matatu anoshandiswa kugadzira column, ne coil yepakati sehafu yewave plate uye mativi maviri se quarter wave plates. Coil yega yega inogona kutenderera pamwe chete ne incident ne outgoing optical fibers. Nekugadzirisa mafambiro ema coil matatu, polarization state ye specific wavelength of incidence inogona kushandurwa kuita chero output polarization state. Zvisinei, kukanganisa pa polarization kunewo hukama ne wavelength. Pa high peak power (kazhinji inoitika muma ultra short pulses), nonlinear polarization rotation inoitika. Dhayamita ye fiber optic coil haigone kuve diki zvakanyanya, zvikasadaro kukotama kuchaunza mamwe ma bend loss. Imwe mhando yakamanikana, uye isinganyanyi kunzwa nonlinearity, inoshandisa birefringence yakasimba (polarization preservation) ye optical fibers pane fiber coils.
YakadzvinyirirwaMutongi weFiber Polarization
Pane mudziyo unogona kuwana mawaveplate anoshanduka-shanduka, anogona kudzvanya urefu hwemafiber e optical kusvika pamwero wakati pasi pekumanikidzwa kwakasiyana-siyana. Nekutenderera zvishoma nezvishoma nekudzvanya optical fiber yakatenderedza axis yayo, uye kuisunga padaro rakati kubva kuchikamu chekudzvanya, chero mamiriro ekuburitsa polarization anogona kuwanikwa. Kutaura zvazviri, mashandiro akafanana neBabinet Soleil compensator (rudzi rwehuwandu hwehuwandu).mudziyo wemazisoine ma wedge maviri e birefringent) anogona kuwanikwa, kunyangwe misimboti yavo yekushanda yakasiyana. Nzvimbo dzakawanda dzekudzvanya dzinogona kushandiswawo, uko kudzvanya chete, kwete kona yekutenderera, kunochinja. Kuchinja kwekudzvanya kunowanzoitwa uchishandisa ma transducer e piezoelectric. Mudziyo uyu unogona zvakare kushanda se polarizer, uko piezoelectric inofambiswa nema frequency akasiyana kana masaini asina kurongeka.