Isidibanisi seFayibha optic

1. Imo yothumelo

Ibhekisa kwindlela yokuhambisa ukukhanya kwimicu ye-optical (ifom yokusasazwa kwe-electromagnetic field).Ifayibha yonxibelelwano eqhelekileyo

Iimowudi zahlulwe zaba yimowudi enye kunye ne-multimode, kunye nemowudi enye ilungele ukuhanjiswa komgama omde kunye ne-multimode efanelekileyo

usulelo olufutshane.I-G652D imicu ye-optical mode enye ine-core diameter ye-d1 ye-9 um kunye ne-cladding diameter d2 ye-125 um.Iimowudi ezininzi

iifiber optical zidla ngokwahlulwa zibe ziifom ezimbini: 62.5/125 okanye 50/125.

Ukukhethwa kwendlela yefiber optical kufuneka ihambelane nemodyuli ye-optical, kungenjalo iya kubangela ilahleko eyongezelelweyo ngenxa yokungalingani kwedayamitha engundoqo.

Ukudityaniswa phakathi kweefiber ze-optical kunye neentambo ezinobubanzi obuhlukeneyo obuphakathi akukhuthazwa.

2. Ilahleko yokufaka

Ubungakanani bokunciphisa amandla omqondiso we-optical, ngokuqhelekileyo ukubonakaliswa kwi-decibels, xa usebenzisa izihlanganisi ze-fiber optic zokudibanisa.Umzekelo,

xa ilahleko yokufaka iyi-3dB, ilahleko yamandla okukhanya imalunga nama-50%.Xa ilahleko yokufaka iyi-1dB, ilahleko yamandla imalunga

I-20%, kunye ne-IL = - 10lg (i-output optical power/input optical power).

3. Buyisela ilahleko

Ikwabizwa ngokuba yiReflection loss, ibhekisa kwiparameter yokusebenza kophawu.Ilahleko ye-Echo ichaza isixa esibuyiswe yi

uphawu lokukhanya xa ibuyela kwindlela yokuqala.Ngokubanzi, ixabiso elikhulu, lingcono.Umzekelo, xa igalelo 1mw amandla, 10% yayo

ibonakaliswe ngasemva, eyi-10dB, kunye ne-0.003% ibonakaliswe ngasemva, ibangele ilahleko ye-echo malunga ne-45dB.RL=- 10lg (amandla okukhanya abonakalisiweyo/

igalelo lokukhanya amandla)

4. Uhlobo lobuso

Iintlobo ze-Optical fiber surface zahlulwe kwi-PC (i-spherical surface grinding) kunye ne-APC (i-oblique spherical surface grinding).Emva kokugaya i-APC,

ukukhanya okubonakalisiweyo okubuyela kwindlela yokuqala kuncitshiswe kakhulu, oku kunceda ekuphuculeni ilahleko yokubuya kwesihlanganisi.