Laser ya DFB ifite fibre imwe ifite frequency imwe

Ingano imwe y'umugozi woseLazeri ya DFB

Igishushanyo mbonera cy'inzira y'urumuri

Uburebure bw'uburebure bwa laser isanzwe ya DFB ni 1550.16nm, kandi igipimo cyo kwanga uruhande n'urundi kiruta 40dB. Bitewe n'uko ubugari bwa 20dB bwaLaser ya DFBni 69.8kHz, bizwi ko ubugari bw'umurongo wayo wa 3dB ari 3.49kHz.

Ibisobanuro by'inzira y'urumuri

1. Sisitemu ya laser ifite umurongo umwe

Inzira y'urumuri igizwe n'ibice by'urumuri bidakora nka pompe ya 976 nmlaser, π -phase shift grating, fibre ikozwe na erbium, na multiplexer yo kugabanya ubunini bw'umuraba. Ihame ry'imikorere ni uko urumuri rwa pompe rukorwa na laser ya 976 nm isohoka inyuze mu cyuma kirinda pompe kandi igagabanywamo inzira ebyiri. 20% by'urumuri rwa pompe runyura mu mpera ya 980nm ya multiplexer yo kugabanya ubunini bw'umuraba ya 1550/980nm maze rukinjira mu cyuma gitanga ubunini bw'umuraba cya π -phase shift grating. Laser yo kugabanya imbuto ihuzwa n'inyuma ya 1550 nm ya 1550/980nm WDM nyuma yo kunyura mu cyuma gitandukanya fibre. 80% by'urumuri rwa pompe ruhuzwa binyuze muri multiplexer yo kugabanya ubunini bw'umuraba ya 1550/980 nm muri EDF ya 2 m erbium-doped gain fiber yo guhanahana ingufu, bigatuma ingufu za laser zongerwa.

Amaherezo, umusaruro wa laser ugerwaho binyuze muri ISO. Laser isohoka ihuzwa na spectrometer (OSA) na optique power meter (PM) kugira ngo ikurikirane spectrum isohoka ya laser n'imbaraga za laser. Ibice byose by'inzira y'urumuri ya sisitemu yose bihuzwa na splicer ya fiber optic fusion, bigatuma habaho imiterere ya fiber optique yuzuye ifite uburebure bwa metero 10. Uruziga rw'uburyo bwo gupima ubugari bw'umurongo rugizwe n'ibikoresho bikurikira: ibihuza bibiri bya fiber optique bya 3 dB, umurongo wa SM-28e single-mode fibre delay wa 50 km, 40 MHzmodulator ya acouste-optic, kimwe naicyuma gipima foton'icyuma gisesengura imiterere y'umubiri.

2. Ibipimo by'igikoresho:

EDF: Uburebure bw'uburebure buri muri C band, aho uburebure bw'umubare bugarukira ni 0.23, aho uburebure bw'umuvuduko bugera ni 1532 nm, agaciro gasanzwe ni 33 dB/m, naho igihombo cyo gusudira ni 0.2 dB.

Irinda pompe: Ishobora gutanga uburinzi ku pompe mu gice cya 800 kugeza 2000 nm, ifite uburebure bw'umurambararo bwa 976 nm n'ubushobozi bwo gucunga ingufu bwa 1 W.

Ihuza fibre optique: Ikora ku buryo imbaraga z'amajwi zikwirakwira cyangwa zihuzwa. Ihuza fibre optique 1 * 2, ifite igipimo cyo gucikamo ibice cya 20:80%, uburebure bw'umurambararo bukora bwa 976nm, na mode imwe.

Umuvuduko wo kugabanya uburebure bw'umuraba: Utuma ibimenyetso bibiri by'urumuri bihurira kandi bigabanywa, 980/1550 nm WDM. Fibre iri ku mpera ya pompe ni Hi1060, naho fibre iri ku mpera rusange n'inyuma y'ikimenyetso ni SMF-28e.

Isolateri y'urumuri: Irinda ko isoko y'urumuri yangizwa nabi n'urumuri rugaruka inyuma, rufite uburebure bw'umurambararo wa 1550nm, isolateri y'ibicurane, n'imbaraga ntarengwa z'urumuri za 1W.