Fibre isanzwe igera kumurongo wisi yose, ikarenza traffic traffic yose

Itsinda ry’ubushakashatsi ryaturutse mu kigo cy’ubushakashatsi cy’urusobe rw’Ubuyapani Ikigo cy’igihugu gishinzwe amakuru n’itumanaho (NICT) cyageze ku ntera nshya y’umurongo wa 1.53 Pbit / s kuri fibre isanzwe ya fibre optique. Ibi bivuze ko umurongo wa interineti wisi yose ushobora kuyijyamo.
Iterambere nk'iryo ryatangajwe mu gice cy'ukwezi gushize: umurongo wa 1.84 Pbit / s wagezweho hamwe na laser imwe hamwe na chip imwe ya optique, agaciro karenze ayo kugerwaho na NICTs, ariko ikibazo cyayo nuko ikiri ubushakashatsi. Chiponike ya Photonic murwego rwo gushushanya, kubwubu bushakashatsi bwa NTIC burashobora gushyirwa mubikorwa mbere.

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Tekinoroji ya Multiplexing: igera kumurongo wagutse wa 1.53 Pbit / s
Abashakashatsi bageze ku ntera igera kuri 1.53 Pbit / s bakoresheje amakuru kuri 55 zitandukanye za optique (tekinike izwi nka multiplexing). Ibyo ni umurongo uhagije wo gutwara abantu bose kuri interineti ku isi (ugereranije munsi ya 1 Pbit / s) hejuru y'umugozi umwe wa fibre optique: inshuro miriyoni ikora neza kuruta guhuza Gbit (nibyiza) abantu basanzwe bafite.
Tekinoroji ikora yifashisha imirongo itandukanye yumucyo murwego rwo hejuru. Kubera ko buri "ibara" murwego (rugaragara kandi rutagaragara) rufite inshuro yaryo: bitandukanye nizindi mirongo zose, irashobora gutwara amakuru yigenga yamakuru. Abashakashatsi bashoboye gufungura imikorere ya 332 bits / s / Hz (bits ku isegonda kuri Hertz); ibi byikubye inshuro eshatu kurenza uko byagerageje mbere muri 2019 - ibyanyuma bigera kumikorere ya 105 bit / s / Hz.

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Ubushakashatsi bwakorewe: C-band amakuru yohereza kuri 184 zitandukanye
Abashakashatsi bashoboye kohereza amakuru ya C-band mu burebure bwa 184 butandukanye: iyi miyoboro yigenga, idahuzagurika ikoreshwa mu kohereza amakuru icyarimwe muri fibre optique. Itara ryahinduwe kugirango ryohereze imigezi 55 itandukanye (imiterere) yamakuru mbere yo koherezwa kumurongo wa fibre optique. Iyo bimaze guhindurwa (nkibikoresho byinshi bya fibre optique yoherejwe ubu), bisaba intoki yikirahure kugirango itware amakuru yose. Nkuko amakuru yoherejwe (akubiyemo uburebure bwa 184 hamwe nuburyo 55), uwakiriye yanga uburebure butandukanye nuburyo bwo gukusanya amakuru. Mu igeragezwa, intera iri hagati yuwohereje niyakira yashyizwe kuri kilometero 25.9.

SourceIbikoresho bifatika biva mu mahanga: 184 bitwara bikomoka mu isoko ya optique. Mod Guhindura ibimenyetso. Umwikorezi yahinduwe hamwe na 16 QAM hamwe nibimenyetso byinshi. Signal Ikimenyetso kibangikanye. Ibimenyetso kuri buri buryo byashizwemo kandi gutinda kwinzira gukoreshwa kugirango bigereranye amakuru yigenga. ④ uburyo bwo kugwiza. Buri kimenyetso gihindurwa muburyo butandukanye kandi bwoherejwe kuri fibre-moderi 55. ⑤ 55 fibre yuburyo. Ikimenyetso gikwirakwiza muri kilometero 25.9 z'uburebure 55 fibre. Mode Uburyo bwa Demultiplexer. Kubakira, ibimenyetso biva kuri buri mwanya utandukanijwe kandi bihinduka muburyo bwibanze. Speed ​​Umuvuduko mwinshi ugereranije. Uburyo bwa demultiplexed signal ni uburebure bwumurongo-demultiplexed ukoresheje akayunguruzo hanyuma igahinduka ikimenyetso cyamashanyarazi hamwe na parallel coherent yakira. Gutunganya ibimenyetso bya interineti. MIMO gutunganya kugirango ikureho ibimenyetso mugihe cyo gukwirakwiza fibre.

Ibisubizo byubushakashatsi byerekana ko nubwo igipimo cyamakuru kigabanukaho gato kumurongo muremure wa C-band (hafi 1565 nm), igipimo gihamye kandi hafi kimwe kiboneka mubindi bice by’uburebure, bigera kuri 1.53 Pbit / s nyuma ikosa. gukosorwa