Menene "zoben fiber na cyclic"?Nawa kuka sani game da shi?
Ma'anar: Zoben fiber na gani wanda hasken zai iya zagayawa sau da yawa
Zoben fiber na cyclic shine ana'urar fiber opticwanda haske zai iya zagayawa baya da baya sau da yawa.Ana amfani da shi ne a tsarin sadarwar fiber na gani mai nisa.Ko da tare da iyakacin tsayifiber na gani, Ana iya watsa hasken sigina ta nisa mai nisa ta hanyar iska da yawa.Wannan yana taimakawa wajen nazarin illolin cutarwa da rashin daidaituwa na gani wanda ke shafar ingancin siginar.
A cikin fasahar Laser, ana iya amfani da madaukai na fiber na cyclic don auna layin aLaser, musamman lokacin da layin layi ya yi ƙanƙanta (<1kHz).Wannan ƙari ne na hanyar ma'aunin layi na kai-heterodyne, wanda baya buƙatar ƙarin laser tunani don samun siginar tunani daga kanta, wanda ke buƙatar amfani da filaye masu tsayi guda ɗaya.Matsalar fasahar gano kai-heterodyne ita ce, jinkirin lokacin da ake buƙata ya kasance daidai da tsari ɗaya da madaidaicin faɗin layin, ta yadda faɗin layin ya kasance ƴan kHz kaɗan, kuma ko da ƙasa da 1kHz yana buƙatar manyan tsayin fiber.
Hoto 1: Tsarin tsari na zoben fiber na cyclic.
Babban dalilin yin amfani da madaukai na fiber shine cewa matsakaicin tsawon fiber na iya ba da jinkiri na dogon lokaci saboda haske yana tafiya da yawa a cikin fiber.Domin raba hasken da ake watsawa cikin madaukai daban-daban, ana iya amfani da na'urar motsa jiki ta acousto-optic a cikin madauki don samar da wani ƙayyadaddun motsi (misali, 100MHz).Saboda wannan canjin mitar ya fi faɗin layin girma, hasken da ya yi tafiya daban-daban na juyi a madauki zai iya rabuwa a cikin yankin mitar.A cikinmai daukar hoto, asalihasken laserkuma ana iya amfani da bugun hasken bayan canjin mitar don auna fadin layin.
Idan babu na'urar haɓakawa a cikin madauki, asarar acousto-optic modulator da fiber yana da girma sosai, kuma ƙarfin hasken zai lalace sosai bayan madaukai da yawa.Wannan yana iyakance adadin madaukai sosai lokacin da aka auna faɗin layi.Za a iya ƙara amplifiers na fiber zuwa madauki don kawar da wannan iyakancewa.
Duk da haka, wannan yana haifar da sabuwar matsala: ko da yake hasken da ke wucewa ta hanyoyi daban-daban ya bambanta gaba daya, siginar bugun yana fitowa daga nau'i-nau'i na photon, wanda ke canza nau'in bugun gaba ɗaya.Za a iya tsara zoben fiber na gani da kyau don hana waɗannan tasirin yadda ya kamata.A ƙarshe, ƙwarewar madauki na fiber cyclic yana iyakance ta amo nafiber amplifier.Har ila yau, wajibi ne a yi la'akari da rashin daidaituwa na fiber da kuma layin Lorentz a cikin sarrafa bayanai
Lokacin aikawa: Dec-12-2023