Chii chinonzi "cyclic fiber ring"?Zvakawanda sei zvaunoziva nezvazvo?
Tsanangudzo: Mhete yefiber optical iyo chiedza chinogona kutenderera kakawanda
A cyclic fiber ring is afiber optic mudziyoumo chiedza chinogona kutenderera nekudzoka nguva zhinji.Iyo inonyanya kushandiswa mune refu kure optical fiber kutaurirana system.Kunyangwe nehurefu hunogumira hweoptical fiber, chiedza chechiratidzo chinogona kufambiswa madaro marefu zvikuru nekumonereka kakawanda.Izvi zvinobatsira kudzidza zvinokuvadza uye optical nonlinearity inokanganisa kunaka kwechiedza chechiratidzo.
Mune laser tekinoroji, cyclic fiber loops inogona kushandiswa kuyera mutsara wemutsara welaser, kunyanya kana mutsara uri mudiki kwazvo (<1kHz).Uku ndiko kuwedzera kwe-self-heterodyne linewidth measurement method, iyo isingadi imwe yereferensi ye laser kuti iwane chiratidzo chechiratidzo kubva pachayo, iyo inoda kushandiswa kwenguva refu single-mode fibers.Dambudziko ne-self-heterodyne yekuongorora teknolojia ndeyokuti nguva inodiwa inononoka ndeyekurongeka kwakafanana nekudzoka kwehupamhi hwemutsara, kuitira kuti mutsara wakafara unongova kHz shomanana, uye kunyange pasi pe1kHz inoda kureba kwakakura kwazvo.
Mufananidzo 1: Schematic diagram ye cyclic fiber ring.
Chikonzero chikuru chekushandisa fiber loops ndechekuti yepakati kureba faibha inogona kupa kunonoka kwenguva refu nekuti mwenje unofamba akawanda anotenderera mufayibha.Kuti upatsanure mwenje unofambiswa muzvishwe zvakasiyana, acousto-optic modulator inogona kushandiswa muchiuno kugadzira imwe frequency shift (semuenzaniso, 100MHz).Nekuda kwekuti iyi frequency shift yakakura kudarika upamhi hwemutsara, mwenje wafamba nhamba yakasiyana yekutendeuka mulop unogona kupatsanurwa mu frequency domain.Muphotodetector, yepakutangalaser chiedzauye kurohwa kwechiedza mushure mekuchinja kwehuwandu kunogona kushandiswa kuyera upamhi hwemutsara.
Kana pasina mudziyo wekusimudzira muchiuno, kurasikirwa muacousto-optic modulator uye fiber yakakura kwazvo, uye kusimba kwechiedza kunoora zvakakomba mushure mezvishwe zvakati wandei.Izvi zvinoganhura zvakanyanya kuwanda kwezvishwe kana mutsara wemutsara ukayerwa.Fiber amplifiers inogona kuwedzerwa kune loop kubvisa ichi chinogumira.
Zvisinei, izvi zvinogadzira dambudziko idzva: kunyange zvazvo chiedza chinopfuura nenzira dzakasiyana-siyana chakaparadzana zvachose, chiratidzo chekurohwa chinobva kune zvakasiyana-siyana zvephotons, izvo zvinoshandura beat spectrum yose.Iyo optical fiber mhete inogona kugadzirwa zvine hungwaru kuti inyatso kuvharisa izvi mhedzisiro.Pakupedzisira, kunzwa kweiyo cyclic fiber loop kunogumira neruzha rwefiber amplifier.Izvo zvinodiwawo kufunga nezvekusawirirana kwefiber uye iyo isiri-Lorentz mitsetse mukugadzirisa data
Nguva yekutumira: Zvita-12-2023