Eo Modulator Series: cyclic fiber malupu muukadaulo wa laser

Kodi mphete ya cyclic fiber ndi chiyani?Kodi mumadziwa bwanji za izo?

Tanthauzo: Mphete ya kuwala komwe kuwala kumazungulira nthawi zambiri

Mphete ya cyclic fiber ndichipangizo cha fiber opticmomwe kuwala kumatha kuzungulira uku ndi uku nthawi zambiri.Amagwiritsidwa ntchito kwambiri pamakina akutali optical fiber communication system.Ngakhale ndi kutalika kwa malirekuwala CHIKWANGWANI, kuwala kwa chizindikiro kumatha kufalikira pa mtunda wautali kwambiri pomazungulira nthawi zambiri.Izi zimathandiza kuphunzira zovulaza ndi mawonekedwe osawoneka bwino omwe amakhudza kuwala kwa chizindikiro.

Muukadaulo wa laser, malupu a cyclic fiber angagwiritsidwe ntchito kuyeza kutalika kwa mzere wa alaser, makamaka pamene kukula kwa mzere kuli kochepa kwambiri (<1kHz).Izi ndizowonjezereka kwa njira yoyezera mizere yodziyimira yokha ya heterodyne, yomwe sikutanthauza laser yowonjezera yowonjezera kuti ipeze chizindikiro cholozera kuchokera pachokha, chomwe chimafuna kugwiritsa ntchito ulusi wautali wamtundu umodzi.Vuto laukadaulo wodzizindikiritsa wa heterodyne ndikuti kuchedwa kwanthawi kofunikira kumakhala kofanana ndi kubwereza kwa mzere wa mzere, kotero kuti m'lifupi mwake ndi kHz pang'ono, ndipo ngakhale kuchepera kwa 1kHz kumafuna utali waukulu kwambiri wa ulusi.

Chithunzi 1: Chithunzi chojambula cha mphete ya cyclic fiber.

Chifukwa chachikulu chogwiritsira ntchito ma loops a ulusi ndikuti ulusi wamtali wapakati umatha kuchedwetsa nthawi yayitali chifukwa kuwala kumayenda mokhotakhota kambirimbiri.Kuti mulekanitse kuwala komwe kumafalikira mu malupu osiyanasiyana, moduli ya acousto-optic ingagwiritsidwe ntchito mu lupu kuti ipangitse kusinthana pafupipafupi (mwachitsanzo, 100MHz).Chifukwa kusintha kwafupipafupi kumeneku kumakhala kokulirapo kuposa kukula kwa mzere, kuwala komwe kwayenda mosiyanasiyana mozungulira muluko kumatha kulekanitsidwa mumtundu wanthawi zonse.MuPhotodetector, choyambirirakuwala kwa laserndi kugunda kwa kuwala pambuyo pa kusintha kwafupipafupi kungagwiritsidwe ntchito kuyeza kukula kwa mzere.

Ngati palibe chipangizo chokulirapo mu lupu, kutayika kwa ma acousto-optic modulator ndi ulusi ndi waukulu kwambiri, ndipo kuwalako kumawola kwambiri pambuyo pa malupu angapo.Izi zimachepetsa kwambiri chiwerengero cha malupu pamene mzere wa mzere ukuyesedwa.Ma fiber amplifiers amatha kuwonjezeredwa ku loop kuti athetse izi.

Komabe, izi zimabweretsa vuto latsopano: ngakhale kuwala komwe kumadutsa mosiyanasiyana kumakhala kosiyana kotheratu, chizindikiro cha kugunda chimachokera kumagulu osiyanasiyana a photon, omwe amasintha kugunda kwamtundu wonse.Mphete ya optical fiber imatha kupangidwa bwino kuti iletse izi.Pomaliza, kukhudzika kwa cyclic fiber loop kumachepetsedwa ndi phokoso lafiber amplifier.M'pofunikanso kuganizira kusagwirizana kwa fiber ndi mizere yopanda Lorentz pakupanga deta