Dab tsi yog Optical Fiber Coupler? Dab tsi yog Txoj Cai thiab Kev Siv Optical Fiber Coupler?

Raws li peb txhua tus paub, optical network systems kuj xav tau ob peb, ceg, thiab faib cov teeb liab kho qhov muag, yog li qhov no yuav tsum muaj fiber ntau txuas kom ua tiav. Yog li, dab tsi yog qhov fiber ntau txuas, thiab dab tsi yog lub hauv paus ntsiab lus thiab kev siv ntawmfiber ntau coupler?

Dab tsi yog qhov optical fiber ntau txuas?

1. Alias: Optical fiber coupler, tseem hu ua optical fiber adapter, kuj hu ua optical fiber flange.

2. Lub ntsiab lus: Ib qho kev sib txuas (movable) kev sib txuas ntawm cov khoom siv kho qhov muag thiab cov khoom siv kho qhov muag, uas txuas ob lub ntsej muag kawg ntawm cov khoom siv kho qhov muag kom lub teeb hluav taws xob tso tawm ntawm cov xaim fiber ntau tuaj yeem txuas rau qhov tau txais fiber ntau rau hauv qhov siab tshaj plaws, thiab nws txoj kev koom tes hauv kev sib txuas kho qhov muag kom txo tau qhov cuam tshuam ntawm qhov system.

3. Kev faib tawm: cais raws li cov khoom siv kho qhov muag

SC fiber ntau txuas: Siv rau SC fiber ntau interface, yog 8 nyias tooj liab sib cuag daim hlau, nws yog RJ-45 connector, yog ib qho tooj liab, nws yog SC fiber ntau interface.

LC fiber ntau txuas: siv rau LC fiber ntau interface, txuas txuas txuas SFP module, feem ntau siv hauv routers.

FC fiber ntau txuas: Siv rau FC fiber ntau interface, feem ntau siv rau sab ODF.

ST Fiber coupler: Siv rau ST fiber ntau interface, feem ntau siv nyob rau hauv fiber ntau faib ntas.

Dab tsi yog lub hauv paus ntsiab lus thiab kev siv ntawm optical fiber coupler?

Optical network systems kuj xav tau ob peb, ceg, thiab faib cov teeb liab kho qhov muag, uas yuav tsum muaj fiber ntau txuas kom ua tiav. Optical fiber ntau txuas, tseem hu ua optical splitter, splitter, yog ib qho tseem ceeb tshaj plaws passive li hauv optical fiber links, yog ib tug fiber optic junction ntaus ntawv nrog ntau yam inputs thiab ntau outputs, feem ntau siv M × N los qhia tias ib tug splitter. muaj M inputs thiab N outputs.

Optical splitters siv nyob rau hauv optical fiber CATV systems feem ntau yog 1 × 2, 1 × 3, thiab 1 × N optical splitters muaj li ntawm lawv.

1. Cov ntsiab lus

Nws tuaj yeem muab faib ua ob hom: fused taper type thiab planar waveguide type. Lub fused taper hom yog tsim los ntawm sab vuam ntawm ob lossis ntau dua qhov muag fibers. Planar waveguide yog micro-optical tivthaiv khoom, uas siv lithography technology los tsim ib tug kho qhov muag waveguide ntawm ib tug nruab nrab los yog semiconductor substrate kom paub txog ceg faib muaj nuj nqi.

Ob hom optical splitting cov hauv paus ntsiab lus zoo sib xws, lawv hloov qhov extinction teb ntawm optical fiber coupling (coupling degree, coupling length) thiab hloov lub optical fiber radius kom ua tiav qhov sib txawv qhov ntau thiab tsawg ntawm cov ceg, thiab conversely, koj tuaj yeem ua ke. ntau lub teeb liab optical rau hauv ib lub teeb liab hu ua synthesizer. Lub fused cone fiber ntau txuas tau dhau los ua cov thev naus laus zis tseem ceeb hauv kev ua lag luam vim nws txoj kev tsim khoom yooj yim, tus nqi pheej yig, yooj yim ntawm kev sib txuas nrog cov fiber ntau sab nraud tag nrho, thiab tuaj yeem tiv taus kev vibration thiab kub hloov.

Txoj kev fusion tapering yog cuam tshuam ob (lossis ntau dua) fibers optical uas tshem tawm cov txheej txheej hauv ib txoj kev, yaj hauv qhov kub thiab txias, ncab mus rau ob sab tib lub sijhawm, thiab thaum kawg tsim cov qauv waveguide tshwj xeeb hauv daim ntawv. ntawm ob lub khob hliav qab hauv cheeb tsam cua sov, los ntawm kev tswj lub kaum sab xis ntawm cov fiber ntau torsion thiab qhov ntev ntawm qhov ncab, qhov sib txawv spectral proportions tuaj yeem tau txais.

Thaum kawg, thaj tsam taper yog solidified ntawm quartz substrate nrog solidifying kua nplaum thiab muab tso rau hauv lub stainless tooj liab raj, uas yog lub optical splitter. Cov txheej txheem tsim khoom no tsis sib haum nrog cov thermal expansion coefficient ntawm solidified nplaum thiab quartz substrate thiab stainless hlau raj, thiab cov degree ntawm thermal expansion thiab contraction yog inconsistent thaum lub ambient kub hloov, uas yog ib qho yooj yim ua rau kev puas tsuaj rau lub optical splitter, tshwj xeeb tshaj yog thaum lub optical splitter muab tso rau hauv lub tshav pob, uas kuj yog lub ntsiab yog vim li cas rau lub optical splitter yuav puas. Splitter ntau lawm rau ntau txoj kev tuaj yeem tsim los ntawm ntau qhov sib cais.

2. Cov cim qhia kev qhia

(1) Insertion poob.

Qhov kev poob qis ntawm qhov kho qhov muag splitter yog hais txog dB tus lej ntawm txhua qhov tso zis ntsig txog qhov poob lub teeb pom kev, thiab nws cov lus qhia lej yog: Ai=-10lg Pouti/Pin, qhov twg Ai yog hais txog qhov poob ntawm I input qhov hluav taws xob. ; Pouti yog lub zog kho qhov muag ntawm I-th tso zis chaw nres nkoj; Pin yog tus nqi hluav taws xob kho qhov muag ntawm qhov kawg input.

(2) Kev poob ntxiv.

Kev poob ntxiv yog txhais tau tias yog tag nrho cov khoom siv kho qhov muag ntawm txhua qhov chaw tso zis tawm txheeb ze rau tus naj npawb ntawm DB ntawm input optical fais fab tuag. Nws yog tsim nyog hais tias rau qhov kho qhov muag fiber ntau txuas, qhov poob ntxiv yog qhov qhia txog qhov zoo ntawm cov txheej txheem tsim khoom, uas qhia txog qhov poob ntawm cov txheej txheem tsim khoom, qhov tsawg dua qhov poob, qhov zoo dua, yog qhov ntsuas qhov ntsuas ntawm cov khoom siv. kev tsim khoom zoo.

Qhov kev poob qis tsuas yog sawv cev rau qhov tso zis hluav taws xob ntawm txhua qhov chaw tso zis, uas tsis yog tsuas yog muaj qhov tsis zoo xwb tab sis kuj suav txog qhov cuam tshuam ntawm qhov sib piv spectral. Yog li ntawd, qhov sib txawv ntawm qhov poob ntawm qhov sib txawv fiber ntau txuas tsis cuam tshuam qhov zoo ntawm cov cuab yeej. Qhov poob ntxiv ntawm 1 * N ib hom qauv kho qhov muag splitter yog qhia hauv cov lus hauv qab no:

Tus lej ntawm cov ceg ntoo {{0}} Kev poob ntxiv DB 0. }} 6 0 7 0 8 0 9 1 0 1.2

(3) Spectral piv.

Lub spectral ratio yog txhais raws li qhov tso zis zog piv ntawm txhua qhov chaw tso zis ntawm lub optical splitter. Hauv kev siv lub cev, qhov sib piv spectral yog qhov tseeb txiav txim siab raws li tus nqi ntawm lub zog kho qhov muag xav tau los ntawm qhov tseeb qhov system optical node (tshwj tsis yog qhov nruab nrab faib). Lub spectral ratio ntawm optical splitter muaj feem xyuam rau lub wavelength ntawm lub teeb kis tau tus mob. Piv txwv li, thaum ib ceg kho qhov muag xa 1.31 microns ntawm lub teeb, spectral piv ntawm ob qhov tso zis terminals yog 50:50; Thaum xa tawm 1.5μm ntawm lub teeb, nws dhau los ua 70: 30 (qhov no yog qhov xwm txheej vim hais tias lub optical splitter muaj qee qhov bandwidth, uas yog, bandwidth ntawm cov teeb liab kis tau tus mob thaum lub spectral ratio yog qhov pib tsis hloov). Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tau qhia lub wavelength thaum xaj lub optical splitter.

(4) Isolation degree.

Kev rho tawm yog hais txog lub peev xwm ntawm ib qho kev kho qhov muag ntawm ib qho optical splitter kom cais cov teeb liab kho qhov muag hauv lwm txoj kev kho qhov muag. Ntawm cov kev ntsuas saum toj no, qhov kev cais tawm yog qhov tseem ceeb dua rau qhov kho qhov muag splitter, thiab cov khoom siv nrog qhov kev sib cais ntawm ntau dua 40dB feem ntau yuav tsum tau siv rau hauv kev siv lub cev, txwv tsis pub, kev ua haujlwm ntawm tag nrho cov kab ke yuav raug cuam tshuam.

Tsis tas li ntawd, kev ruaj ntseg ntawm optical splitter kuj yog ib qho tseem ceeb qhia, qhov kev ruaj ntseg yog txhais tau hais tias thaum lub sab nraud kub hloov, lub xeev kev ua hauj lwm ntawm lwm yam cuab yeej hloov, lub optical splitter lub spectral ratio thiab lwm yam kev ua tau zoo qhia yuav tsum yeej tsis hloov, Qhov tseeb, kev ruaj ntseg ntawm optical splitter kiag li nyob ntawm cov txheej txheem ntawm cov chaw tsim khoom, cov khoom ntawm cov tuam txhab sib txawv, qhov zoo sib xws yog qhov loj heev.

Hauv kev siv tswv yim, kuv tau ntsib ntau qhov tsis zoo ntawm cov khoom siv kho qhov muag tsis zoo, tsis yog tsuas yog ua cov ntsuas kev ua tau zoo sai, tab sis kuj muaj qhov kev puas tsuaj loj heev, raws li cov cuab yeej tseem ceeb hauv lub cev fiber ntau, kev yuav khoom yuav tsum tau them sai sai rau, tsis tuaj yeem saib tus nqi, tus nqi kho qhov muag splitter ntawm cov txheej txheem qis yog qhov tsawg.

Tsis tas li ntawd, kev sib luag, kev poob rov qab, kev coj ncaj ncees, thiab PDL txhua tus nyob hauv txoj haujlwm tseem ceeb hauv qhov kev ua tau zoo ntawm cov khoom siv kho qhov muag.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.