Ngokwemigangatho ye-ITU-T, i-fiber optical yonxibelelwano ihlukaniswe kwiindidi ezi-7: G.651 ukuya kwi-G.657. Yintoni umahluko phakathi kwazo?
1, G.651 ifayibha
I-G.651 yi-Multi-mode fibers, kunye ne-G.652 ukuya kwi-G.657 yonke imicu yendlela enye.
I-fiber optical iqulunqwe ngundoqo, i-cladding kunye ne-coating, njengoko kuboniswe kuMzobo 1.
Ngokuqhelekileyo ububanzi be-cladding yi-125um, umaleko wokugquma (emva kokufakwa kombala) yi-250um; kunye nedayamitha engundoqo ayikho inexabiso elimiselweyo, kuba umahluko wedayamitha engundoqo iya kutshintsha ukusebenza kothumelo lwefiber ebonakalayo enkulu.
Umzobo 1. Isakhiwo seFiber
Ngokuqhelekileyo i-diameter engundoqo ye-multimode fiber ukusuka kwi-50um ukuya kwi-100um. Ukusebenza kokudluliselwa kwefiber kuphuculwe kakhulu xa i-diameter engundoqo iba yincinci. Njengoko kubonisiwe kuMfanekiso 2.
Umzobo 2. Ukuhanjiswa kwemowudi ezininzi
Imowudi yokuhambisa enye kuphela xa i-diameter engundoqo yefiber incinci kunexabiso elithile, njengoko kuboniswe kuMzobo 3, oba yi-fiber yemodi enye.
Umzobo 3. Ukuhanjiswa kwemodi enye
2, G.652 IFayibha
I-G.652 i-fiber optical fiber iyona nto isetyenziswa kakhulu kwi-fiber optical. Okwangoku, ngaphezu kwe-fiber kwikhaya (FTTH) intambo ye-optical yasekhaya, i-fiber optical esetyenziswe kumgama omde kunye nommandla we-metropolitan phantse yonke i-G.652 i-fiber optical. abathengi odola olu hlobo kakhulu ukusuka Honwy.
Ukuthotyelwa yenye yezona zinto zibalulekileyo ezichaphazela umgama wokuhanjiswa kwefiber optical. I-coefficient yokunciphisa i-fiber optical inxulumene ne-wavelength. Njengoko kuboniswe kuMzobo 4. Inokubonwa kumfanekiso ukuba ukunyanzeliswa kwefiber kwi-1310nm kunye ne-1550nm kuncinci, ngoko ke i-1310nm kunye ne-1550nm ziye zaba zezona zisetyenziswa ngokuqhelekileyo iifestile ze-wavelength kwiifiber zemodi enye.
Umzobo 4. I-coefficient yokunciphisa i-fiber mode enye
3, G.653 IFayibha
Emva kokuba isantya seenkqubo zonxibelelwano lwe-optical yandiswe ngakumbi, ukuhanjiswa komqondiso kuqala ukuchatshazelwa yi-fiber dispersion. I-Dispersion ibhekiselele kwisiphazamiso somqondiso (ukwandiswa kwe-pulse) okubangelwa ngamacandelo ahlukeneyo aphindaphindiweyo okanye amacandelo emowudi eyahlukeneyo yomqondiso (i-pulse) esasazeka ngezantya ezahlukeneyo kunye nokufikelela kumgama othile, njengoko kubonisiwe kuMfanekiso 5.
Umzobo 5. Ukusasazwa kweFayibha
I-coefficient ye-dispersion ye-fiber optical nayo ihambelana nobude be-wavelength, njengoko kuboniswe kwi-Figure 6. I-fiber ye-mode eyodwa ine-coefficient encinci yokunciphisa i-1550 nm, kodwa i-coefficient ye-dispersion kule wavelength inkulu. Ke abantu baphuhlise i-fiber yendlela enye ene-dispersion coefficient ye-0 kwi-1550nm. Le fiber ibonakala igqibelele yi-G.653.
Umzobo 6. I-coefficient yokusasazwa kwe-G.652 kunye ne-G.653
Nangona kunjalo, ukusabalalisa kwe-fiber optical yi-0 kodwa ayifanelekanga ukusetyenziswa kweenkqubo ze-wavelength division (WDM), ngoko i-G.653 i-fiber optical yapheliswa ngokukhawuleza.
4, G.654 IFayibha
I-G.654 i-fiber optical isetyenziswa ikakhulu kwiinkqubo zonxibelelwano ngeentambo zangaphantsi kwamanzi. Ukuze kuhlangatyezwane neemfuno zomgama omde kunye nomthamo omkhulu wonxibelelwano lwentambo yangaphantsi kwamanzi.
5, G.655 IFayibha
I-G.653 fiber ine-zero dispersion kwi-1550nm wavelength kwaye ayisebenzisi inkqubo ye-WDM, ngoko ke i-fiber ene-dispersion encinci kodwa ingekho i-zero kwi-1550nm ye-wavelength yaphuhliswa. Le yi-G.655 fiber. I-G.655 i-fiber ene-attenuation encinci kufuphi ne-1550nm wavelength, i-dispersion encinci kunye ne-zero, kwaye ingasetyenziselwa kwiinkqubo ze-WDM; Ngoko ke, i-G.655 i-fiber ibe yinto yokuqala yokukhetha imigca ye-trunk emide iminyaka engaphezu kwe-20 malunga ne-2000. I-coefficient yokunciphisa kunye ne-dispersion coefficient ye-G.655 fiber iboniswe kwi-Figure 7.
Umzobo 7. I-coefficient yokusasazwa kwe-G.652/G.653/G.655
Nangona kunjalo, i-fiber optical enjalo ijongene nosuku lokupheliswa. Ngokukhula kobuchwepheshe bembuyekezo ye-dispersion, i-G.655 fiber ithathelwe indawo yi-G.652 fiber. Ukuqala malunga ne-2005, imigca ye-trunk emide yaqala ukusebenzisa i-G.652 fiber optical kwizinga elikhulu. Okwangoku, i-G.655 i-fiber optical iphantse isetyenziselwa ukugcinwa komgca wokuqala womgama omde.
Kukho esinye isizathu esibalulekileyo sokuba i-G.655 fiber isuswe:
Umgangatho wedayamitha yentsimi ye-G.655 ifayibha yi-8～11μm (1550nm). I-mode ye-fiber ye-diameter ye-fiber eveliswa ngabavelisi befayibha abahlukeneyo inokuba nomehluko omkhulu, kodwa akukho mahluko kuhlobo lwefayibha, kwaye ifayibha enomahluko omkhulu kwimodi yobubanzi bentsimi idityanisiwe Ngamanye amaxesha kukho ukuthotywa okukhulu, okuzisa okukhulu. ukuphazamiseka kulondolozo; Ngoko ke, kwinkqubo ye-trunk, abasebenzisi baya kukhetha i-G.652 fiber kunokuba i-G.655, nokuba ifuna iindleko ezinkulu zembuyekezo yokusasazwa.
6, G.656 IFayibha
Ngaphambi kokwazisa i-G.656 i-fiber optical, makhe sibuyele kwixesha apho i-G.655 yayilawula imigca ye-trunk emide.
Ukususela kumbono weempawu zokunciphisa, i-G.655 fiber ingasetyenziselwa unxibelelwano kwi-wavelength range ukusuka kwi-1460nm ukuya kwi-1625nm (i-S + C + L band), kodwa ngenxa yokuba i-coefficient ye-dispersion yefiber engaphantsi kwe-1530nm incinci kakhulu, ayikho. ifanelekile kwi-wavelength division (WDM). ) inkqubo esetyenzisiweyo, ngoko ke uluhlu lwe-wavelength olusebenzisekayo lwe-G.655 ifayibha yi-1530nm～1525nm (i-C + L band).
Ukuze wenze i-1460nm-1530nm ububanzi be-wavelength (S-band) ye-fiber optical nayo ingasetyenziselwa ukunxibelelana, zama ukunciphisa i-dispersion slope ye-G.655 fiber optical, eba yi-G.656 fiber optical. I-coefficient yokunciphisa kunye ne-dispersion coefficient ye-G.656 fiber iboniswe kuMfanekiso 8.
Umzobo 8
Ngenxa yemiphumo engabonakaliyo ye-fiber optical, inani lamashaneli kwiinkqubo ze-WDM ezide aziyi kunyuka kakhulu, ngelixa iindleko zokwakhiwa kwee-metropolitan area optical fibers zincinci. Akunantsingiselo ukwandisa inani lamajelo kwiinkqubo zeWDM. Ngoko ke, i-dense wavelength division yangoku (DWDM) ) Ngokuyininzi isekho i-80 / 160 wave, i-C + L ye-wave band ye-fiber optical yanele ukuhlangabezana nemfuno. Ngaphandle kokuba iinkqubo zesantya esiphezulu zineemfuno ezinkulu zesithuba sesiteshi, i-G.656 ifayibha ayinakuze ibe nosetyenziso olukhulu.
6, G.657 IFayibha
I-G.657 i-fiber optical fiber isetyenziswa kakhulu ngaphandle kwe-G.652. Intambo yokubona esetyenziswa kwikhaya le-FTTH ebhitye ngakumbi kunomgca wefowuni, ine-G.657 ifayibha ngaphakathi.Ukuba ufuna iinkcukacha ezithe vetshe ngayo, pls fumana https://www.gl-fiber.com/bare-optical-fiber / okanye imeyile ku [i-imeyile ekhuselweyo], Enkosi!