Nguwuphi umahluko phakathi kweemodyuli ze-optical mode enye kunye neemodyuli ze-optical mode ezininzi kunye nendlela yokukhetha?

Ngophuhliso olukhawulezayo lwamaziko edatha kunye nezicelo ze-5G, iimodyuli ze-optical ziyaziwa ngokuthe ngcembe ngabantu abaninzi kwaye zisetyenziswe ngokubanzi. Njengoko sonke sisazi, iimodyuli ze-optical ziyakwazi ukwahlula ngokweentlobo zeparameter, njengemodyuli ye-optical mode enye kunye nemodyuli ye-optical mode ehlala siyikhankanya. Ngaba uyazi ukuba imodyuli enye kunye neendlela ezininzi zithetha ntoni kwiimodyuli zendlela enye kunye neemodyuli zemodyuli ezininzi? Nguwuphi umahluko phakathi kweemodyuli zemodyuli enye kunye neemodyuli zemodyuli ezininzi? Indlela yokukhetha phakathi kweemeko ezahlukeneyo zesicelo? Eli nqaku liza kukuxelela umahluko phakathi kwezi zibini ngokweenkcukacha kunye nendlela yokukhetha umbuzo, unokufunda ngemibuzo.

1.Ziziphi iimodyuli ze-optical mode enye kunye neemodyuli ze-optical mode ezininzi?

Iimodyuli ze-Optical zihlulwe kwiimodyuli ze-optical mode enye kunye neemodyuli ze-optical mode ezininzi ngokweentlobo zefiber optical ezisebenzayo. I-fiber optical wavelength yeemodyuli zemodyuli enye yi-1310nm, 1550nm kunye ne-WDM wavelength, ngelixa i-fiber optical wavelength yeemodyuli ze-multi-mode optical modules yi-850nm okanye i-1310nm. Okwangoku, ubude be-fiber optical ubukhulu buyi-850nm. Imodyuli ye-optical mode enye kunye ne-multi-mode optical module Imodyuli ye-optical mode enye kunye nemodyuli ye-multi-mode optical ibhekisela kwindlela yokuhanjiswa kweefibers kwimodyuli ye-optical module. Ke ngoko, kufuneka zisetyenziswe kunye ne-fiber optical-mode enye kunye ne-multi-mode optical fibers. Ububanzi bomgca wemicu ye-optical ye-single-mode yi-9 / 125μm, kunye ne-diameter ye-multi-mode optical fibers yi-50 / 125μm okanye i-62.5 / 125μm.

2.Ukwahlukana phakathi kwemodyuli ye-optical mode enye kunye nemodyuli ye-multi-mode optical

Enyanisweni, imodyuli ye-optical mode enye kunye nemodyuli ye-optical ye-multi-mode ayifani kuphela kuhlobo lwefiber esetyenzisiweyo, kodwa ihluke kwezinye iinkalo, njengoko kuboniswe ngezantsi:

① Umgama wothumelo

Iimodyuli ze-optical mode enye zihlala zisetyenziselwa ukuhanjiswa komgama omde, kwaye umgama wokuhanjiswa kweemodyuli ze-optical mode enye iyahluka ngeendlela ezahlukeneyo ze-fiber optical wavelengths. Imodyuli ye-optical mode enye kunye ne-fiber optical wavelength ye-1310nm inelahleko enkulu kodwa i-dispersion encinci ngexesha lenkqubo yokuhambisa, kwaye umgama wokuhambisa uphakathi kwe-40km, ngelixa imodyuli ye-optical mode enye kunye ne-fiber optical wavelength ye-1550nm ine ilahleko encinci kodwa ukusasazwa okukhulu ngexesha lenkqubo yothumelo, kwaye umgama wothumelo ungaphezulu kwe-40km, kwaye eyona ikude kakhulu inokuhanjiswa ngokuthe ngqo ngaphandle kwe-relay 120km. Iimodyuli ze-Multi-mode optical zisoloko zisetyenziselwa ukuhanjiswa kwexesha elifutshane, kwaye umgama wokuhambisa uphakathi kwe-300 ukuya kwi-500m.

②Ubungakanani besicelo

Ukususela kwintshayelelo engentla, kunokubonwa ukuba iimodyuli ze-optical mode enye zihlala zisetyenziswa kuthungelwano olunemigama emide yothumelo kunye namazinga aphezulu othumelo, njengothungelwano lwengingqi yemetropolitan kunye nothungelwano lwefiber optical passive, ngelixa iimodyuli ze-optical mode ezininzi zihlala zisetyenziswa uthungelwano olunemigama emifutshane yothumelo kunye namazinga aphantsi othumelo, njengamagumbi ezixhobo zeziko ledatha kunye nothungelwano lwendawo yendawo.

③Ikhanyisa

Umthombo wokukhanya osetyenziswa yimodyuli ye-optical mode enye kunye nemodyuli ye-optical ye-multi-mode iyahluka, umthombo wokukhanya osetyenziswa yimodyuli ye-single-mode optical imodyuli yokukhanya okanye i-laser, kunye nomthombo wokukhanya osetyenziswa yi-multi-mode. Imodyuli yokubona i-LD okanye i-LED.

④Ukuchithwa kwamandla

Ukusetyenziswa kwamandla emodyuli ye-single-mode optical ngokuqhelekileyo inkulu kuneemodyuli ezininzi ze-optical modes, kodwa ukusetyenziswa kwamandla kwiimodyuli ze-optical kugxininiswa ikakhulu ngezinto ezifana neeparameters, imodeli kunye nophawu lwemodyuli ye-optical, ngoko ukusetyenziswa kwamandla. yeemodyuli zemodyuli enye eneparameters ezahlukeneyo, iimodeli kunye neempawu nazo ziya kuba zifana.

⑤Ixabiso

Xa kuthelekiswa neemodyuli ze-optical mode ezininzi, iimodyuli ze-optical mode eyodwa zisebenzisa inani elikhulu lezixhobo, ukusetyenziswa komthombo wokukhanya we-laser kuyabiza kakhulu, ngoko ke ixabiso leemodyuli ze-single-mode optical liphezulu kunexabiso lemodyuli ye-multi-mode optical. .

3.Indlela yokukhetha imodyuli ye-optical mode enye kunye nemodyuli ye-optical mode-mode?

Njengoko kukhankanyiwe ngasentla, iimodyuli ze-optical mode enye kunye ne-multi-mode optical modules zihluke ngokubhekiselele kumgama wokuhambisa, uluhlu lwesicelo, ukusetyenziswa komthombo wokukhanya, ukusetyenziswa kwamandla kunye nexabiso, ngoko ke ukhetho kufuneka lusekelwe kwindawo yesicelo sangempela. Ngokomzekelo, inethiwekhi yendawo ye-metropolitan kunye nomgama omde wokudlulisa kufuneka ukhethe imodyuli ye-optical mode enye, kunye nenethiwekhi yendawo yendawo kunye nomgama omfutshane wokuhambisa kufuneka ukhethe imodyuli ye-multi-mode optical. Ngamagama alula, iimodyuli ze-multi-mode optical kufuneka zikhethwe kwindawo yenethiwekhi kunye neendawo ezininzi, iziqhagamshelo ezininzi, ezininzi zokugoba kunye nezixa ezinkulu zokudibanisa kunye ne-couplers, kunye neemodyuli ze-optical mode enye kufuneka zikhethwe kwimigca ye-trunk emide.

4. Shwankathela

Ngentshayelelo engentla, ndiyakholelwa ukuba kufuneka ube nokuqonda okucacileyo kweemodyuli zemodyuli enye kunye neemodyuli zemodyuli ezininzi. Ukunqanda ukungaphumeleli kwekhonkco, kuyacetyiswa ukuba ukhethe imodyuli yendlela enye okanye imodyuli ye-optical yemodyuli eninzi ngokwemeko yakho yesicelo. Okubaluleke ngakumbi, kungcono ukuba ungaxubi i-fiber optical mode enye kunye nemodyuli ye-optical mode enye.