Nheyo uye mashandisirwo eamplifier yefiber yakasanganiswa ne erbium yeEDFA
Maumbirwo ekutanga eEDFAamplifier ye erbium-doped fiber, iyo inonyanya kuumbwa nechinhu chinoshanda (fiber ye quartz ine hurefu hwemamita gumi nemaviri, dhayamita yepakati 3-5 microns, doping concentration (25-1000)x10-6), pombi yechiedza (990 kana 1480nm LD), optical coupler uye optical isolator. Chiedza chechiratidzo nechiedza chepombi zvinogona kupararira nenzira imwechete (co-pomping), divi rakapesana (reverse pumping), kana mativi ese (bidirectional pumping) muErbium fiber. Kana mwenje wechiratidzo nechiedza chepombi zvikapinzwa mu erbium fiber panguva imwe chete, erbium ion inoshamiswa kusvika padanho resimba rakakwirira (system yematanho matatu) pasi pekushanda kwechiedza chepombi, uye nekukurumidza inoora kusvika padanho remetastable. Painodzokera pasi pasi pekushanda kwechiedza chechiratidzo chechiitiko, photon inoenderana nechiedza chechiratidzo inoburitswa, kuitira kuti chiratidzo chiwedzere. Iyo amplified spontaneous emission (ASE) spectrum ine bandwidth yakakura (inosvika 20-40nm) uye ine peaks mbiri dzinoenderana ne1530nm uye 1550nm zvakateerana.
Zvakanakira zvikuru zveEDFA amplifierkuwedzera kwakanyanya, bandwidth yakakura, simba guru rekuburitsa, kushanda zvakanaka kwekupomba, kurasikirwa kwakaderera kwekupinza, uye kusanzwa mamiriro epolarization.
Nheyo yekushanda kwe amplifier ye fiber yakasanganiswa ne erbium
Iyo amplifier yefaibha yakadhonzwa neErbium（EDFA Optical amplifier） inonyanya kuumbwa nefiber ine erbium-doped (inenge 10-30m muhurefu) uye pombi yechiedza. Nheyo inoshanda ndeyekuti fiber ine erbium-doped inogadzira mwaranzi inosimudzirwa pasi pesimba rechiedza chinopombwa (wavelength 980nm kana 1480nm), uye chiedza chinopfuudzwa chinoshanduka nekuchinja kwechiratidzo chechiedza chinopinzwa, izvo zvakaenzana nekuwedzera chiratidzo chechiedza chinopinzwa. Mhedzisiro yacho inoratidza kuti kuwedzera kwe amplifier yefiber inopinzwa yeErbium-doped kazhinji kunenge kuri 15-40db, uye daro re relay rinogona kuwedzerwa neanopfuura 100km. Saka, vanhu havagoni kurega kubvunza: sei masayendisiti akafunga kushandisa erbium ine doped mu fiber amplifier kuwedzera simba remafungu echiedza? Tinoziva kuti erbium chinhu chisingawanzoitiki chenyika, uye zvinhu zvisingawanzoitiki zvenyika zvine hunhu hwazvo hwakakosha. Kushandisa zvinhu zvisingawanzoitiki zvenyika muzvishandiso zveoptical kwave kuchishandiswa kwenguva yakareba kuvandudza mashandiro ezvishandiso zveoptical, saka ichi hachisi chinhu chakaitika netsaona. Pamusoro pezvo, sei kureba kwechiedza chepombi kuchisarudzwa pa980nm kana 1480nm? Kutaura zvazviri, kureba kwechiedza chepombi kunogona kuva 520nm, 650nm, 980nm, uye 1480nm, asi tsika dzakaratidza kuti kureba kwechiedza chepombi che1480nm ndiko kwakanyanya, kuchiteverwa nekukwirira kwechiedza chepombi che980nm.
Maumbirwo emuviri
Chimiro chikuru che erbium-doped fiber amplifier （EDFA Optical Amplifier）. Pane chinobvisa magetsi pamucheto wekupinda nepamugumo wekubudisa, chinangwa ndechekuita kuti chiratidzo che optical chitumirwe nenzira imwe chete. Pombi inoburitsa magetsi ine urefu hwe 980nm kana 1480nm uye inoshandiswa kupa simba. Basa re coupler nderekubatanidza chiratidzo che input optical nechiedza che pombi mu erbium-doped fiber, uye kutamisa simba rechiedza che pombi kuenda kuchiratidzo che input optical kuburikidza nekushanda kwe erbium-doped fiber, kuitira kuti simba re input optical signal riwedzere. Kuti uwane simba re optical rinobuda uye index yeruzha yakaderera, Erbium-doped fiber amplifier inoshandiswa mukuita inoshandisa chimiro che pombi mbiri kana kupfuura dzine zvinobvisa magetsi pakati kuti dziparadzane. Kuti uwane gain curve yakakura uye yakapfava, firita ye gain flattening inowedzerwa.
EDFA ine zvikamu zvikuru zvishanu: Erbium-doped fiber (EDF), Optical coupler (WDM), optical isolator (ISO), Optical Filter, uye Pumping Supply. Mapombi anoshandiswa kazhinji anosanganisira 980nm ne1480nm, uye aya mapombi maviri ane pombi yepamusoro uye anoshandiswa zvakanyanya. 980nm pombi yechiedza ine ruzha yakaderera; 1480nm pombi yechiedza ine pombi yepamusoro uye inogona kuwana simba guru rekuburitsa (inenge 3dB yakakwira kupfuura 980nm pombi yechiedza).
mukana
1. Marefu ekushanda anoenderana nehwindo rekudzikamisa tambo shoma refiber yemodhi imwe chete.
2. Kushanda zvakanaka kwekubatanidza. Nekuti i-fiber amplifier, zviri nyore kubatanidza ne-transmission fiber.
3. Kushanda nesimba zvakanyanya pakushandura simba. Chikamu cheEDF chidiki pane chefiber yekutumira, uye chiedza chesignal nechiedza chepombi zvinotumirwa panguva imwe chete muEDF, saka kugona kwe optical kwakanyatsobatanidzwa. Izvi zvinoita kuti kudyidzana pakati pechiedza ne gain medium Er ion kuzare, pamwe nehurefu hwakakodzera hwefiber yakasanganiswa ne erbium, saka kushanda nesimba kwekushandura kwechiedza kwakakwira.
4. Kukwira kwepamusoro, ruzha rwakaderera, simba guru rekuburitsa, kutaura kwakaderera pakati pemachaneli.
5. Hunhu hwekuwana kwakagadzikana: EDFA haikanganisi tembiricha, uye kuwana hakunei nekubatana kwakanyanya ne polarization.
6. Chinhu chekuwana hachina chekuita nehurongwa hwebhiti uye fomati yedata.
kushaya simba
1. Kushanda kusiri kwemutsara: EDFA inowedzera simba remagetsi nekuwedzera simba remagetsi rinopinzwa mufiber, asi kana rakakura zviri nani. Kana simba remagetsi rikawedzerwa kusvika pamwero wakati, simba remagetsi remagetsi remagetsi rinogadzirwa. Saka, pakushandisa ma amplifiers emagetsi, kutarisirwa kunofanira kupihwa pakukosha kwekudzora simba remagetsi remagetsi remagetsi rinopinda mufiber rimwe chete.
2. Range ye wavelength yekuwedzera yakagadzika: range ye wavelength yekushanda yeC-band EDFA ndeye 1530nm ~ 1561nm; Range ye wavelength yekushanda yeL-band EDFA ndeye 1565nm ~ 1625nm.
3. Kusawirirana kwegain bandwidth: Kusawirirana kwegain bandwidth yeEDFA erbium-doped fiber amplifier kwakakura zvikuru, asi kutsanya kwegain spectrum yeEDF pachayo hakuna kutsetseka. Firita yegain flattening inofanira kushandiswa kuti isatsemuke muWDM system.
4. Dambudziko rekukwira kwechiedza: Kana nzira yechiedza yakajairika, maion eerbium anomutswa nechiedza chepombi anotakurwa nechiedza chechiratidzo, nokudaro achipedzisa kuwedzera kwechiedza chechiratidzo. Kana chiedza chekupinda chikapfupika, nekuti maion eerbium anogadzikana anoramba achiungana, kana chiedza chechiratidzo changodzoserwa, simba rinosvetuka, zvichikonzera kuwedzera kwechiedza.
5. Mhinduro yekubuda kwemagetsi ndeyekuita kuti magetsi adzimwe magetsi otomatiki (APR) kana kuti magetsi adzimwe magetsi otomatiki (APSD) muEDFA, kureva kuti, EDFA inoderedza magetsi otomatiki kana kudzima magetsi otomatiki kana pasina chiedza chekupinda, nokudaro ichidzivisa kuitika kwechiitiko chekubuda kwemagetsi.
Maitiro ekushandisa
1. Chinosimudzira simba chinoshandiswa kuwedzera simba remasaini akawanda ewavelength mushure mewave yekuwedzera simba, uye wozoatumira. Sezvo simba remasaini mushure mewave yekuwedzera simba richiwanzova guru, index yeruzha uye kuwedzera kwesimba rekuwedzera simba hazvina kunyanya kukwira. Chine simba guru rekuburitsa simba.
2. Line-amplifier, mushure mesimba reAmplifier, inoshandiswa nguva nenguva kutsiva kurasikirwa kweLine transmission, kazhinji inoda noise index diki uye simba guru re optical rinobuda.
3. Pre-Amplifier: Isati yapatsanurwa uye mushure me amplifier yemutsara, inoshandiswa kuwedzera chiratidzo uye kuvandudza kunzwa kwemugamuchiri (kana chiyero che optical signal-to-noise (OSNR) chichizadzisa zvinodiwa, simba guru rekupinda rinogona kudzvinyirira ruzha rwemugamuchiri pacharo uye kuvandudza kunzwa kwekugamuchira), uye index yeruzha idiki kwazvo. Hapana chinodiwa chikuru pasimba rekubuda.
Nguva yekutumira: Kurume-17-2025