Katoa-muka kotahi-auauDFB taiaho
Te hoahoa ara whatu
Ko te roangaru pokapū o te taiaho muka DFB tikanga ko 1550.16nm, a ko te taha-ki-te-te-taha te nui atu i te 40dB. I te mea ko te whanui raina 20dB o teDFB muka taiahoKo te 69.8kHz, ka taea te mohio ko tana whanui raina 3dB ko 3.49kHz.
Whakaahuatanga ara whatu
1. Pūnaha laser auau kotahi
Ko te ara whatu kei te tito i nga waahanga whatu hāngū penei i te 976 nm kua maemaataiaho, π -waahanga whakaneke pae kupenga, muka erbium-doped, me te roangaru wehewehe whakarearua. Ko te maataapono mahi ko te rama papu i hangaia e te 976 nm te taiaho pupuhi ka puta mai i roto i te parepare papu ka wehea kia rua nga huarahi. Ko te 20% o te rama papu e haere ana i te mutunga 980nm o te 1550/980nm roangaru wehenga maha ka uru atu ki te kupenga π -waahanga nekehanga. Ko te laser puna uri whakaputa e hono ana ki te 1550 nm te mutunga o te 1550/980nm WDM i muri i te paahitanga i roto i te wehenga muka. Ko te 80% o te rama papu e honoa ana ma te 1550/980 nm te roangaru wehewehe maha ki roto i te 2 m erbium-doped muka EDF mo te whakawhiti hiko, te whakatutuki i te whakakaha hiko taiaho.
Ka mutu, ka tutuki te putanga laser ma te ISO. Ko te laser putanga e hono ana ki te spectrometer (OSA) me te mita hiko whatu (PM) mo te aro turuki i te hihinga whakaputa laser me te mana laser. Ko nga wahanga katoa o te ara whatu katoa o te punaha e hono ana e te whakahiato whakakotahitanga muka whatu, ka tutuki he hanganga punaha muka whatu me te roa o te kohao tata ki te 10 mita. Ko te kowiri o te punaha ine whanui raina kei roto i nga taputapu e whai ake nei: e rua nga taarua 3 dB muka whatu, he 50 km SM-28e raina whakaroa muka whatu aratau kotahi, he 40 MHzmodulator acouste-optic, me te akaitirotiro whakaahuame te tātari hihinga.
2. Tawhā Pūrere:
EDF: Ko te roangaru mahi kei roto i te roopu C, ko te 0.23 te aperture tau, ko te tihi absorption ko 1532 nm, ko te uara angamaheni ko 33 dB/m, a ko te mate fehokotaki he 0.2 dB.
Kaitiaki Pump: Ka taea e ia te whakarato whakamarumaru papu i roto i te roopu 800 ki te 2000 nm, me te roangaru o waenganui o te 976 nm me te kaha whakahaere mana o te 1 W.
Kaihono muka whatu: Ka mohio ki te tohatoha me te whakakotahitanga o te mana tohu whatu. 1*2 whatu whatu coupler, me te wehenga wehenga o 20:80%, he roangaru mahi o 976nm, me te kotahi-aratau.
Wavelength division multiplexer: Ka mohio ki te huinga me te wehewehe o nga tohu whatu e rua o nga roangaru rereke, 980/1550 nm WDM. Ko te muka i te pito papu ko Hi1060, ko te muka i te pito noa me te mutunga tohu ko SMF-28e.
Kaiwehe muka whatu: Aukati i te puna marama kia kore e pangia e te rama whakamuri-whakaata, me te roangaru mahi o 1550nm, bipolar wehe, me te mana whatu teitei o te 1W.
Te wa tuku: Sep-08-2025