Ihame n'ikoreshwa rya amplifier ya fibre ya EDFA erbium

Ihame n'ishyirwa mu bikorwa ryaamplifier ya fibre ya EDFA erbium

Imiterere y'ibanze yaEDFAamplifier ya fibre ya erbium, igizwe ahanini n'icyuma gikora (fibre ya quartz ifite uburebure bwa metero nyinshi, umurambararo w'ibanze wa mikoroni 3-5, urugero rwa doping (25-1000)x10-6), isoko ry'urumuri rwa pompe (990 cyangwa 1480nm LD), coupler y'amajwi n'iy'amajwi itandukanya. Urumuri rw'ibimenyetso n'urumuri rwa pompe bishobora gukwirakwira mu cyerekezo kimwe (co-pomping), mu cyerekezo gitandukanye (reverse pumping), cyangwa mu byerekezo byombi (bidirectional pumping) muri fibre ya Erbium. Iyo urumuri rw'ibimenyetso n'urumuri rwa pompe bishyizwe muri fibre ya erbium icyarimwe, iyoni ya erbium irashishikazwa n'urwego rw'ingufu nyinshi (systeme y'urwego rutatu) munsi y'igikorwa cy'urumuri rwa pompe, kandi vuba irabora kugeza ku rwego rwa metastable. Iyo igarutse ku butaka munsi y'igikorwa cy'urumuri rw'ibimenyetso, fotoni ijyanye n'urumuri rw'ibimenyetso irasohoka, ku buryo ikimenyetso cyongerwa. Interuro yayo ya ASE ifite umuvuduko munini (kugeza kuri 20-40nm) kandi ifite uburebure bubiri bungana na 1530nm na 1550nm.

Ibyiza by'ingenzi byaamplifier ya EDFAni ukwiyongera cyane, bandwidth nini, imbaraga nyinshi zo gusohora, ubushobozi bwinshi bwo gupompa, igihombo gito cyo kwinjira, no kutiyumva neza kwa polarisation states.

Ihame ry'imikorere ya amplifier ya fibre ya erbium

Amplifier ya fibre ya Erbium-dopedEDFA Optical Amplifier） Igizwe ahanini na fibre ifite erbium (uburebure bwa metero 10-30) n'urumuri rwa pompe. Ihame ry'imikorere ni uko fibre ifite erbium ikora imirasire ishyushye ikoresheje imbaraga z'urumuri rwa pompe (uburebure bwa wavelength 980nm cyangwa 1480nm), kandi urumuri rwa radiation ruhinduka iyo ikimenyetso cy'urumuri cyinjijwe gihindutse, bingana no kongera ikimenyetso cy'urumuri cyinjijwe. Ibisubizo bigaragaza ko inyungu ya amplifier ya fibre ifite erbium akenshi ari 15-40db, kandi intera yo kujyana ishobora kwiyongeraho kilometero zirenga 100. Rero, abantu ntibashobora kwirinda kwibaza bati: kuki abahanga mu bya siyansi batekereje gukoresha erbium ifite erbium muri amplifier ya fibre kugira ngo bongere ubukana bw'imiraba y'urumuri? Tuzi ko erbium ari ikintu cy'isi idakunze kuboneka, kandi ibintu by'isi idakunze kuboneka bifite imiterere yihariye. Gukoresha ibintu by'isi idakunze kuboneka mu bikoresho by'urumuri byakoreshejwe igihe kirekire kugira ngo binoze imikorere y'ibikoresho by'urumuri, bityo iki si ikintu cy'impanuka. Byongeye kandi, kuki uburebure bw'urumuri rw'ipompe butoranywa kuri 980nm cyangwa 1480nm? Mu by'ukuri, uburebure bw'urumuri rw'ipompe bushobora kuba 520nm, 650nm, 980nm, na 1480nm, ariko imyitozo yagaragaje ko uburebure bw'urumuri rw'ipompe rwa 1480nm ari bwo bwo hejuru, bugakurikirwa n'uburebure bw'urumuri rw'ipompe rwa 980nm.

Imiterere y'umubiri

Imiterere y'ibanze ya amplifier ya fibre ya erbium-doped fibre （EDFA Optical Amplifier）. Hari agakoresho kayitandukanya ku mpera y'injira n'isohoka, intego ni ugutuma ikimenyetso cya optique gikwirakwira mu buryo bumwe. Pompe exciter ifite uburebure bwa 980nm cyangwa 1480nm kandi ikoreshwa mu gutanga ingufu. Inshingano ya coupler ni uguhuza ikimenyetso cya optique cyinjiye n'urumuri rwa pompe muri fibre ya erbium-doped, no kohereza ingufu z'urumuri rwa pompe ku kimenyetso cya optique cyinjiye binyuze mu bikorwa bya fibre ya erbium-doped, kugira ngo ikimenyetso cya optique cyinjiye girusheho kwiyongera. Kugira ngo ubone imbaraga nyinshi z'urumuri n'urusaku ruke, amplifier ya fibre ya Erbium ikoreshwa mu bikorwa ikoresha imiterere y'amasoko abiri cyangwa menshi ya pompe afite itandukanya hagati kugira ngo itandukane. Kugira ngo haboneke umuyoboro munini kandi ugororotse, hongeweho agace kayigabanya.

EDFA igizwe n'ibice bitanu by'ingenzi: fibre ya Erbium-doped (EDF), Optical coupler (WDM), optical isolator (ISO), Optical Filter, na Pomping Supply. Isoko zikoreshwa cyane za pompe zirimo 980nm na 1480nm, kandi izi pompe ebyiri zifite imikorere myiza yo kupompa kandi zikoreshwa cyane. Ingano y'urusaku rw'urumuri rwa pompe ya 980nm ni ntoya; Isoko y'urumuri rwa pompe ya 1480nm ifite imikorere myiza yo kupompa kandi ishobora kubona imbaraga nyinshi zo gusohora (hafi 3dB hejuru y'urumuri rwa pompe ya 980nm).

inyungu

1. Uburebure bw'uburebure bw'umurambararo bujyanye n'idirishya rito cyane ry'uburemere bw'umuyoboro umwe.

2. Ubushobozi bwo guhuza ibintu neza cyane. Kubera ko ari fibre amplifier, biroroshye kuyihuza na fibre ikwirakwiza amakuru.

3. Guhindura ingufu neza cyane. Imbere ya EDF ni ntoya ugereranyije n’iya fibre yohereza, kandi urumuri rw’ikimenyetso n’urumuri rwa pompe byoherezwa icyarimwe muri EDF, bityo ubushobozi bw’urumuri buba bwinshi cyane. Ibi bituma imikoranire hagati y’urumuri n’uburyo bwo gukuramo ingufu (gain medium) Eriyoni yuzuye cyane, hamwe n’uburebure bukwiye bwa fibre ya erbium, bityo ubushobozi bwo guhindura ingufu z’urumuri buba buri hejuru.

4. Inyungu nyinshi, urusaku ruto, imbaraga nyinshi zo gusohora, kuvugana guke hagati y'imiyoboro.

5. Ibiranga kwiyongera guhamye: EDFA ntabwo ihangana n'ubushyuhe, kandi kwiyongera ntaho bihuriye cyane na polarization.

6. Uburyo bwo gushakisha ntibushingiye ku gipimo cya bit ya sisitemu n'imiterere y'amakuru.

ibura

1. Ingaruka zitari umurongo umwe: EDFA yongera imbaraga z'urumuri binyuze mu kongera imbaraga z'urumuri zishyirwa muri fibre, ariko uko zingana ni ko ziba nziza kurushaho. Iyo imbaraga z'urumuri ziyongerewe ku rugero runaka, ingaruka zitari umurongo umwe z'urumuri zizaba ziboneka. Kubwibyo, mu gihe cyo gukoresha amplifiers za fibre optique, hagomba kwitabwaho agaciro ko kugenzura imbaraga z'urumuri rumwe rw'urumuri.

2. Urugendo rw'uburebure bw'umurambararo rudahinduka: urugendo rw'uburebure bw'umurambararo rwa C-band EDFA ni 1530nm ~ 1561nm; Urugendo rw'uburebure bw'umurambararo rwa L-band EDFA ni 1565nm ~ 1625nm.

3. Uneven gain gain bandwidth: Uneven gain bandwidth ya EDFA erbium-doped fiber amplifier ni nini cyane, ariko spectrum ya gain ya EDF ubwayo ntabwo iringaniye. Agace ka gain flattening filter kagomba gukoreshwa kugira ngo gain gain irusheho kuba nziza muri sisitemu ya WDM.

4. Ikibazo cy’izamuka ry’urumuri: Iyo inzira y’urumuri isanzwe, iyoni za erbium zishyushywa n’urumuri rwa pompe zitwarwa n’urumuri rw’ikimenyetso, bityo bikarangira urumuri rw’ikimenyetso rukosoye. Iyo urumuri rwinjiye rugabanijwe, kubera ko iyoni za erbium zikomeza kwirundanya, iyo urumuri rw’ikimenyetso rumaze kugaruka, ingufu zizasimbuka, bigatuma urumuri ruzamuka.

5. Umuti wo kugabanya ingufu z'amashanyarazi ni ugukora akazi ko kugabanya ingufu z'amashanyarazi mu buryo bwikora (APR) cyangwa akazi ko kuzimya ingufu z'amashanyarazi mu buryo bwikora (APSD) muri EDFA, ni ukuvuga ko EDFA igabanya ingufu mu buryo bwikora cyangwa izimya umuriro mu buryo bwikora iyo nta rumuri rwinjiye, bityo bigahagarika kubaho kw'ingaruka z'amashanyarazi.

Uburyo bwo gukoresha porogaramu

1. Amplifier yo kongera imbaraga z'ibimenyetso byinshi by'uburebure nyuma y'umuraba wongera imbaraga, hanyuma ikabyohereza. Kubera ko imbaraga z'ibimenyetso nyuma y'umuraba wongera imbaraga muri rusange ari nini, igipimo cy'urusaku n'ubwiyongere bw'ingufu ntabwo biri hejuru cyane. Ifite imbaraga nyinshi zisohoka.

2. Amplifaya y'umurongo, nyuma ya Amplifier y'ingufu, ikoreshwa buri gihe mu kwishyura igihombo cya Line transmission, muri rusange isaba urusaku ruto cyane n'ingufu nyinshi z'urumuri.

3. Pre-Amplifier: Mbere yo kugabanya no nyuma ya amplifier y'umurongo, ikoreshwa mu kongera ikimenyetso no kunoza ubushobozi bwo kumva (mu gihe ikigereranyo cy'urusaku rw'ijwi (OSNR) cyujuje ibisabwa, imbaraga nini zo kwinjira zishobora guhagarika urusaku rw'akira ubwacyo no kunoza ubushobozi bwo kumva), kandi igipimo cy'urusaku ni gito cyane. Nta gisabwa kinini ku ngufu zo gutanga umusaruro.