Byose bya fibre imwe-ya DFB laser

Byose-fibre imwe-inshuroLaser

Igishushanyo mbonera

Uburebure bwo hagati bwa fibre isanzwe ya DFB ni 1550.16nm, naho igipimo cyo kwangwa kuruhande kirenze 40dB. Urebye ko umurongo wa 20dB wa aDFB fibre laserni 69.8kHz, birashobora kumenyekana ko umurongo wa 3dB ari 3.49kHz.

Inzira nziza ibisobanuro

1. Sisitemu imwe ya laser ya sisitemu

Inzira ya optique igizwe nibice bya optique nka 976 nm yavomwelaser. Ihame ryakazi nuko urumuri rwa pompe rwakozwe na 976 nm pompe ya laser isohoka binyuze mumurinzi wa pompe kandi igabanijwemo inzira ebyiri. 20% by'urumuri rwa pompe runyura kuri 980nm iherezo rya 1550 / 980nm igabanya umurongo wa multiplexer hanyuma ikinjira π -ibice bya shitingi. Ibisohoka imbuto yimbuto laser ihujwe na 1550 nm iherezo rya 1550 / 980nm WDM nyuma yo kunyura mumashanyarazi. 80% yumucyo wa pompe ihujwe binyuze muri 1550/980 nm igabanya uburebure bwumurongo wa m2 muri m 2 ya erbium-dope yunguka fibre EDF yo guhana ingufu, kugera kumashanyarazi ya laser.

Hanyuma, laser isohoka igerwaho binyuze muri ISO. Ibisohoka bisohoka byahujwe na spekrometero (OSA) hamwe na metero ya optique (PM) kugirango ikurikirane laser isohoka hamwe nimbaraga za laser. Ibigize byose bigize inzira ya optique ya sisitemu ihuzwa na fibre optique fusion splicer, igera kumurongo wuzuye wa fibre optique ifite uburebure bwa metero 10. Umuzenguruko wa sisitemu yo gupima ubugari bugizwe nibikoresho bikurikira: bibiri bya 3 dB optique ya fibre fibre, 50 km SM-28e umurongo umwe wa optique fibre itinda, 40 MHzmoderi ya acouste-optique, kimwe na agufotoranisesengura.

2. Ibipimo byibikoresho:

EDF: Uburebure bwimikorere iri mumurongo wa C, ubwinshi bwumubare ni 0.23, impinga yo kwinjiza ni 1532 nm, agaciro gasanzwe ni 33 dB / m, naho igihombo cyo gusudira ni 0.2 dB.

Kurinda pompe: Irashobora gutanga pompe kurinda pompe ya 800 kugeza 2000 nm, hamwe nuburebure bwo hagati bwa 976 nm nubushobozi bwo gukoresha ingufu za 1 W.

Optical fibre coupler: Itahura ikwirakwizwa cyangwa guhuza imbaraga za signal optique. 1 * 2 optique ya fibre optique, ifite igabana rya 20: 80%, uburebure bwumurongo wa 976nm, nuburyo bumwe.

Igabana rya Wavelength multiplexer: Itahura guhuza no kugabana ibimenyetso bibiri bya optique yuburebure butandukanye, 980/1550 nm WDM. Fibre kumpera ya pompe ni Hi1060, naho fibre kumpera rusange nibimenyetso byerekana ni SMF-28e.

Optical fibre isolator: Irinda isoko yumucyo kutagira ingaruka mbi kumucyo ugaragara inyuma, hamwe nuburebure bwumurongo wa 1550nm, bipolar isolator, hamwe nimbaraga nini ya optique ya 1W.