ʻO ka laser DFB alapine hoʻokahi a pau-fiber

Alapine hoʻokahi a pau o ka fiberKukuna DFB

Hoʻolālā ala optical

ʻO ka nalu waena o kahi laser fiber DFB maʻamau he 1550.16nm, a ʻoi aku ka nui o ka lakio hōʻole ʻaoʻao-a-ʻaoʻao ma mua o 40dB. Hāʻawi ʻia ʻo ka laulā laina 20dB o kahiKukuna olonā DFBʻo 69.8kHz, hiki ke ʻike ʻia ʻo kona laulā laina 3dB he 3.49kHz.

Ka wehewehe ʻana i ke ala ʻōniʻoniʻo

1. ʻŌnaehana laser alapine hoʻokahi

Ua haku ʻia ke ala optical me nā ʻāpana optical passive e like me ka 976 nm pumpedlaser, π-phase shift grating, erbium-doped fiber, a me ka wavelength division multiplexer. ʻO ke kumu hana, ʻo ke kukui pamu i hana ʻia e ka laser pumped 976 nm e hoʻopuka ʻia ma o ka pale pamu a māhele ʻia i ʻelua ala. 20% o ke kukui pamu e hele ana ma ka hopena 980nm o ka 1550/980nm wavelength division multiplexer a komo i ka π-phase shift grating. Hoʻopili ʻia ka laser kumu hua hoʻopuka i ka hopena 1550 nm o ka 1550/980nm WDM ma hope o ka hala ʻana ma o kahi fiber isolator. 80% o ke kukui pamu e hoʻopili ʻia ma o kahi 1550/980 nm wavelength division multiplexer i loko o kahi 2 m erbium-doped gain fiber EDF no ka hoʻololi ikehu, e hoʻokō ana i ka hoʻonui mana laser.

ʻO ka mea hope loa, ua hoʻokō ʻia ka hopena laser ma o kahi ISO. Hoʻopili ʻia ka laser puka i ka spectrometer (OSA) a me ka mika mana optical (PM) no ka nānā ʻana i ka spectrum puka laser a me ka mana laser. Hoʻopili ʻia nā ʻāpana āpau o ke ala optical o ka ʻōnaehana holoʻokoʻa e kahi splicer fusion fiber optic, e hoʻokō ana i kahi ʻōnaehana fiber optical piha me ka lōʻihi o ka lua ma kahi o 10 mika. ʻO ka loop o ka ʻōnaehana ana laulā laina ua haku ʻia me kēia mau mea hana: ʻelua mau couplers fiber optical 3 dB, kahi laina lohi fiber optical hoʻokahi SM-28e 50 km, kahi 40 MHz.mea hoʻololi optic acouste, a me kahimea ʻike kiʻia me kahi mea kālailai spectrum.

2. Nā palena o ka hāmeʻa:

EDF: Aia ka nalu hana ma ka hui C, ʻo ka puka helu he 0.23, ʻo ka piko omo he 1532 nm, ʻo ka waiwai maʻamau he 33 dB/m, a ʻo ka pohō kuʻihao he 0.2 dB.

Mea pale pamu: Hiki iā ia ke hāʻawi i ka pale pamu ma ka hui 800 a 2000 nm, me kahi nalu waena o 976 nm a me ka mana lawelawe mana o 1 W.

ʻO ka mea hoʻohui fiber optical: Hoʻomaopopo ia i ka hoʻolaha a i ʻole ka hui pū ʻana o ka mana hōʻailona optical. 1 * 2 optical fiber coupler, me ka lakio māhele o 20:80%, kahi nalu hana o 976nm, a me ke ʻano hoʻokahi.

ʻO ka multiplexer mahele nalu: Hoʻomaopopo ia i ka hui pū ʻana a me ka mahele ʻana o ʻelua mau hōʻailona optical o nā nalu like ʻole, 980/1550 nm WDM. ʻO Hi1060 ka fiber ma ka hopena pamu, a ʻo SMF-28e ka fiber ma ka hopena maʻamau a me ka hopena hōʻailona.

Mea hoʻokaʻawale fiber optical: Pale i ke kumu mālamalama mai ka hoʻopilikia maikaʻi ʻole ʻia e ka mālamalama i hoʻohuli ʻia i hope, me ka nalu hana o 1550nm, ka mea hoʻokaʻawale bipolar, a me ka mana optical kiʻekiʻe loa o 1W.