Uyini umehluko phakathi kwezintambo ze-OM ne-OS2 fibre optic?

Izintambo ze-fiber optic zidlala indima ebalulekile ekwakhiweni kwamanethiwekhi ezokuxhumana, kunezinhlobo ezimbili zezintambo ezijwayelekile ze-fiber optic emakethe. Enye iyimodi eyodwa kanti enye iyintambo ye-fiber optic enemodi eminingi. Ngokuvamile imodi eminingi iqalwa ngokuthi “OM(Optical multi-mode fiber)” futhi imodi eyodwa iqalwa ngokuthi “OS(Optical single-mode fiber)”.

Kunezinhlobo ezine zamamodi amaningi: OM1, OM2, OM3 kanye ne-OM4 futhi Imodi Eyodwa inezinhlobo ezimbili ze-OS1 ne-OS2 kumazinga e-ISO/IEC 11801. Uyini umehluko phakathi kwezintambo ze-OM ne-OS2 fibre optic? Ngokulandelayo, sizokwethula umehluko phakathi kwezinhlobo ezimbili zezintambo.

1.Umehluko kububanzi obuyingqikithikanye nezinhlobo ze-fiber

Izintambo ze-OM ne-OS zinomehluko omkhulu kububanzi obuyingqikithi. I-multi-mode fiber core diameter ingu-50 µm kanye no-62.5 µm ngokuvamile, kodwa i-OS2 yemodi eyodwa yobubanzi obujwayelekile obungu-9 µm.

I-Optical Fiber Core Diameters

Izinhlobo ze-Fiber

    

 

2.Umehluko ekuncipheni

Ukuncishiswa kwekhebula le-OM kuphakeme kunekhebula ye-OS, ngenxa yobubanzi obuyingqikithi enkulu. Ikhebula le-OS linobubanzi bomgogodla obuncane, ngakho-ke isignali yokukhanya ingadlula ku-fiber ngaphandle kokuboniswa izikhathi eziningi futhi igcine ukuncipha kube kuncane. Kodwa ikhebula le-OM linobubanzi obukhulu be-fiber core okusho ukuthi izolahlekelwa amandla amaningi okukhanya ngesikhathi sokudlulisa isignali yokukhanya.

 

3. Umehluko ebangeni

Ibanga lokudlulisela le-fiber yemodi eyodwa alikho ngaphansi kuka-5km, elivame ukusetshenziselwa ulayini wokuxhumana webanga elide; kuyilapho i-multi-mode fiber ingafinyelela cishe ku-2km kuphela, futhi ifanele ukuxhumana nebanga elifushane ezakhiweni noma emakhempasi.

Uhlobo lwefiber		Ibanga
		100BASE-FX	1000BASE-SX	1000BASE-LX	1000BASE-SR	40GBASE-SR4	100GBASE-SR10
Imodi eyodwa	OS2	200M	5KM	5KM	10KM	-	-
Imodi eminingi	I-OM1	200M	275M	550M (Idinga intambo yesichibi sokulungisa isimo)	-	-	-
	OM2	200M	550M		-	-	-
	OM3	200M	550M		300M	100M	100M
	OM4	200M	550M		400M	150M	150M

 

4. Umehluko kubude beza nomthombo wokukhanya

Qhathanisa nekhebuli ye-OS, ikhebula le-OM linomthamo ongcono "wokuqoqa ukukhanya". I-fiber core kasayizi omkhulu ivumela ukusetshenziswa kwemithombo yokukhanya enezindleko eziphansi, njengama-LED nama-VCSEL asebenza ku-850nm kanye no-1300 nm wavelengths. Ngenkathi ikhebuli ye-OS isebenza ikakhulukazi ku-1310 noma 1550 nm wavelengths edinga imithombo ye-laser ebiza kakhulu.

5. Umehluko kumkhawulokudonsa

Ikhebula le-OS lisekela imithombo yokukhanya yamandla agqamile nangokwengeziwe enokuncipha okuphansi okuphansi, inikeza umkhawulokudonsa ongenamkhawulo ngokombono. Ngenkathi ikhebula le-OM lithembele ekudluliselweni kwamamodi amaningi okukhanya anokukhanya okuncane kanye nokuncishiswa okuphezulu okunikeza umkhawulo kumkhawulokudonsa.

6. Umehluko emgodleni wombala wekhebula

Bheka incazelo evamile ye-TIA-598C , ikhebula ye-OS yemodi eyodwa ngokuvamile embozwa ngejazi langaphandle eliphuzi, kuyilapho ikhebuli enamamodi amaningi embozwe ngombala we-oragen noma we-aqua.