Raadinta awoodda sare iyo fogaanta gudbinta dheer ee hababka isgaarsiinta casriga ah ee casriga ah, qaylada, sida xaddidaadda aasaasiga ah ee jirka, ayaa had iyo jeer xaddiday horumarinta waxqabadka.
In caadi ahEDFANidaamka erbium-doped fiber amplifier, mid kasta oo gudbinta indhaha ah wuxuu soo saaraa qiyaastii 0.1dB ee qaylada qiiqa iska-soo-baxa ee urursan (ASE), kaas oo ku qotoma dabeecadda quantum-ka ee isdhexgalka iftiinka / elektiroonigga inta lagu jiro habka xoojinta.
Guuxa noocaan ah waxa uu u muuqdaa sida heerka picosecond-ka ee wakhtiga goobta. Marka loo eego saadaasha moodeelka jitter-ka, iyadoo la eegayo xaaladda isku dhafka kala firdhisan ee 30ps/(nm · km), jitterku wuxuu kordhiyaa 12ps marka la gudbinayo 1000km. Qaybta soo noqnoqda, waxay u horseedaa hoos u dhac ku yimaadda saamiga isha-ilaa-bulshada (OSNR), taasoo keentay luminta dareenka 3.2dB (@ BER=1e-9) ee nidaamka 40Gbps NRZ.
Caqabadda aadka u daran waxay ka timaadaa isku-xidhka firfircoon ee saamaynta fibre-ga ee aan tooska ahayn iyo kala firdhinta - isku-dhafka fidinta fibre-gaaban ee caadiga ah (G.652) ee daaqadda 1550nm waa 17ps/(nm · km), oo ay weheliso isbeddelka wejiga aan tooska ahayn ee ay keento is-beddelka is-beddelka (SPM). Marka awoodda wax-gelinta ahi ay dhaafto 6dBm, saamaynta SPM waxay si weyn u qalloocin doontaa qaab-dhismeedka garaaca wadnaha.
Nidaamka 960Gbps PDM-16QAM ee lagu muujiyey jaantuska kore, furitaanka isha ka dib gudbinta 200km waa 82% qiimaha bilowga ah, iyo qodobka Q ayaa lagu hayaa 14dB (oo u dhiganta BER ≈ 3e-5); Marka masaafada la dheereeyo ilaa 400km, saameynta isku dhafan ee iskudhafka marxaladda isdhaafka ah (XPM) iyo afar mawjadaha isku dhafka ah (FWM) waxay keenaysaa in heerka furitaanka indhaha uu hoos ugu dhaco 63%, iyo heerka qaladka nidaamka wuxuu ka sarreeyaa go'aanka adag ee saxitaanka qaladka FEC ee 10 ^ -12.
Waxaa mudan in la ogaado in saameynta soo noqnoqda ee laser modulation toos ah (DML) ay ka sii dari doonto - qiyaasta alfa (linewidth factor factor) qiimaha laser DFB ee caadiga ah waa inta u dhaxaysa 3-6, iyo isbeddelka soo noqnoqda ee degdega ah wuxuu gaari karaa ± 2.5GHz (oo u dhiganta cabbirka C = 2.5GHz / mA, natiijada korodhka 1mA) 38%.
Kanaalka isdhaafsiga nidaamka isku dhufashada mawjada dhererka dhererka (WDM) ayaa ka kooban caqabado qoto dheer. Qaadashada fogeynta kanaalka 50GHz tusaale ahaan, awoodda faragelinta ee ay keento isku dhafka afarta mawjadaha (FWM) waxay leedahay dherer wax ku ool ah oo Leff ah oo qiyaastii 22km ah fiilooyinka indhaha ee caadiga ah.
Kanaalka isdhaafsiga nidaamka isku dhufashada mawjada dhererka dhererka (WDM) ayaa ka kooban caqabado qoto dheer. Qaadashada fogaynta kanaalka 50GHz tusaale ahaan, dhererka waxtarka leh ee awoodda faragelinta ee ay dhaliso afar mowjadaha isku dhafan (FWM) waa Leff=22km (oo u dhiganta isugeynta attenuation fiber α=0.22 dB/km).
Marka awoodda wax gelinta la kordhiyo ilaa +15dBm, heerka isdhaafsiga ee u dhexeeya kanaalada ku xiga wuxuu kordhiyaa 7dB (marka loo eego gunta -30dB), taasoo ku qasbeysa nidaamka inuu kordhiyo saxitaanka qaladka hore (FEC) ka 7% ilaa 20%. Saamaynta wareejinta korantada ee ay keentay kicinta kala firdhinta Raman (SRS) waxay keentaa lumitaanka ku dhawaad 0.02dB kiiloomitir kiiloomitir ee mawjadaha dhererka dheer, taasoo horseedaysa hoos u dhac ilaa 3.5dB ee nidaamka band C + L (1530-1625nm). Magdhawga jiirada wakhtiga dhabta ah ayaa loo baahan yahay iyada oo loo marayo barbardhiga faa'iidada firfircoon (DGE).
Xadka waxqabadka nidaamka ee saamaynta jireed ee la isku daray waxaa lagu qiyaasi karaa badeecada fogaanta bandwidth (B · L): B · L ee nidaamka habaynta NRZ ee caadiga ah ee G.655 fiber (fiber magdhow la bixiyay) waa qiyaastii 18000 (Gb/s) · km, iyadoo la adeegsanayo modulation PDM-QPSK iyo tignoolajiyada ogaanshaha isku xidhan, tusahan waa la hagaajin karaa ilaa 2800EC 9.5dB).
Qaybta goynta 7-core x 3-mode space division multiplexing fiber (SDM) ayaa gaadhay awoodda gudbinta ee 15.6Pb/s · km (awoodda hal fiber ee 1.53Pb/sx masaafada gudbinta ee 10.2km) ee deegaanka shaybaadhka iyada oo loo marayo isku xidhka daciifka ah isku xidhka inter core crosstalk control (<-40dB/km).
Si loo wajaho xadka Shannon, nidaamyada casriga ahi waxay u baahan yihiin inay si wada jir ah u qaataan jaangooyada jaangooyooyinka (PS-256QAM, gaaritaanka 0.8dB faa'iidada qaabaynta), sinnaanta shabakada neerfaha (waxtarka magdhowga NL oo la hagaajiyay 37%), iyo qaybinta Raman amplification (DRA, helitaanka saxnaanta ± 0.5dB) teknoolojiyadda gudbinta Q-600 ee Q-600 2dB (laga bilaabo 12dB ilaa 14dB), oo ku deji dulqaadka OSNR ilaa 17.5dB/0.1nm (@ BER=2e-2).
Waqtiga boostada: Jun-12-2025