Duk-fiber-mita guda ɗaya DFB Laser

Duk-fiber-mita guda ɗayaFarashin DFB

Tsarin hanyar gani

Matsakaicin tsayin daka na Laser fiber na DFB na al'ada shine 1550.16nm, kuma rabon kin amincewar gefe-da-gefe ya fi 40dB. Ganin cewa 20dB layi na aDFB fiber Lasershine 69.8kHz, ana iya sanin cewa layinsa na 3dB shine 3.49kHz.

Bayanin hanyar gani

1. Single-mita Laser tsarin

Hanyar gani tana kunshe da abubuwan da aka gyara na gani kamar 976 nm da aka yi famfoLaser, π-lokaci matsawa grating, erbium-doped fiber, da rabe tsawon mahara Multixer. Ka'idar aiki ita ce hasken famfo da aka samar ta hanyar 976 nm mai famfo Laser yana fitowa ta hanyar kariyar famfo kuma ya kasu kashi biyu. 20% na hasken famfo yana wucewa ta ƙarshen 980nm na 1550/980nm raƙuman raƙuman raƙuman raƙuman raƙuman ruwa kuma ya shiga π -phase motsi grating. Ana haɗa Laser tushen iri na fitarwa zuwa ƙarshen 1550 nm na 1550/980nm WDM bayan wucewa ta hanyar keɓaɓɓiyar fiber. 80% na hasken famfo yana haɗe ta hanyar 1550/980 nm raƙuman raƙuman raƙuman raƙuman raƙuman ruwa zuwa 2 m erbium-doped riba fiber EDF don musayar makamashi, cimma ƙarfin ƙarfin laser.

A ƙarshe, ana samun fitowar laser ta hanyar ISO. Ana haɗa Laser ɗin fitarwa bi da bi zuwa spectrometer (OSA) da na'urar wutar lantarki ta gani (PM) don sa ido kan bakan fitarwar Laser da ikon laser. Duk abubuwan da ke cikin tsarin gaba dayan hanyar gani na tsarin suna haɗe ta hanyar fiber optic fusion splicer, suna samun cikakkiyar tsarin tsarin fiber na gani tare da rami mai tsayi kusan mita 10. Madaidaicin tsarin ma'aunin layin yana kunshe da na'urori masu zuwa: 3 dB fiber optic fiber couplers, 50 km SM-28e layin jinkirin fiber na gani guda ɗaya, 40 MHzacouste-optic modulator, haka kuma amai daukar hotoda na'urar tantancewa.

2. Sigar na'ura:

EDF: Tsawon tsayin aiki yana cikin rukunin C, buɗaɗɗen lamba shine 0.23, ƙimar ɗaukar nauyi shine 1532 nm, ƙimar da aka saba shine 33 dB/m, kuma asarar walda shine 0.2 dB.

Mai kare famfo: Yana iya ba da kariya ta famfo a cikin 800 zuwa 2000 nm band, tare da tsakiyar zangon 976 nm da ikon sarrafa ikon 1 W.

Optical fiber coupler: Yana gane rarraba ko haɗin ikon siginar gani. 1 * 2 na gani fiber coupler, tare da tsaga rabo na 20:80%, wani aiki kalaman na 976nm, da kuma guda-yanayin.

Multixer Rarraba Tsawon Wavelength: Yana gane haɗuwa da rarraba sigina na gani guda biyu na tsawon zango daban-daban, 980/1550 nm WDM. Fiber a ƙarshen famfo shine Hi1060, kuma fiber a ƙarshen gama gari da ƙarshen siginar shine SMF-28e.

Keɓantaccen fiber na gani: Yana hana tushen hasken yin mummunar tasiri ta hasken baya-baya, tare da tsawon aiki na 1550nm, mai keɓewar bipolar, da matsakaicin ƙarfin gani na 1W.