Choyamba, chidziwitso choyambirira cha module ya Optical
1.Tanthauzo:
Optical module: ndiye kuti, gawo la optical transceiver.
2.Mapangidwe:
Optical transceiver module imapangidwa ndi chipangizo cha optoelectronic, chigawo chogwira ntchito ndi mawonekedwe owoneka bwino, ndipo chipangizo cha optoelectronic chimaphatikizapo magawo awiri: kutumiza ndi kulandira.
Gawo lotumizira ndi: chizindikiro chamagetsi cholowetsa nambala inayake chimakonzedwa ndi chipangizo choyendetsa mkati kuti chiyendetse laser ya semiconductor (LD) kapena diode yowala (LED) kuti itulutse chizindikiro chowunikira cha mulingo wofananira, ndi kuwala. mphamvu zodziwikiratu kulamulira dera ndi mkati anapereka mmenemo. Mphamvu yamagetsi yotulutsa kuwala imakhalabe yokhazikika.
Gawo lolandirira ndi: gawo la optical signal input module of code code imasinthidwa kukhala chizindikiro chamagetsi ndi diode yojambula zithunzi. Pambuyo pa preamplifier, chizindikiro chamagetsi cha nambala yofananira chimatuluka, ndipo chizindikiro chotulutsa nthawi zambiri chimakhala mulingo wa PECL. Panthawi imodzimodziyo, chizindikiro cha alamu chimatuluka pambuyo poti mphamvu ya kuwala yolowetsayo ili yochepa kuposa mtengo wina.
3.zigawo ndi kufunikira kwa module ya kuwala
Ma module a Optical ali ndi zofunikira zambiri zaukadaulo wa optoelectronic. Komabe, pama module awiri otentha osinthika, GBIC ndi SFP, magawo atatu otsatirawa amakhudzidwa kwambiri posankha:
(1) Kutalika kwapakati
Mu nanometers (nm), pali mitundu itatu yayikulu:
850nm (MM, multimode, otsika mtengo koma lalifupi kufala mtunda, zambiri yekha 500M); 1310nm (SM, single mode, kutaya kwakukulu panthawi yopatsirana koma kubalalitsidwa kwakung'ono, komwe kumagwiritsidwa ntchito kufalitsa mkati mwa 40KM);
1550nm (SM, mode single, kutayika kochepa panthawi yopatsirana koma kubalalitsidwa kwakukulu, komwe kumagwiritsidwa ntchito kufalitsa mtunda wautali pamwamba pa 40KM, ndipo imatha kutumiza mwachindunji 120KM popanda kutumiza);
(2) Mtengo wotumizira
Chiwerengero cha ma bits (bits) a data yotumizidwa pamphindikati, mu bps.
Pano pali mitundu inayi yomwe imagwiritsidwa ntchito kwambiri: 155 Mbps, 1.25 Gbps, 2.5 Gbps, 10 Gbps, ndi zina zotero. Mlingo wa kufala nthawi zambiri umagwirizana m'mbuyo. Choncho, 155M optical module imatchedwanso FE (100 Mbps) optical module, ndipo 1.25G optical module imatchedwanso GE (Gigabit) optical module.
Iyi ndiye gawo lomwe limagwiritsidwa ntchito kwambiri pazida zamagetsi zamagetsi. Kuonjezera apo, mlingo wake wotumizira mu fiber storage systems (SAN) ndi 2Gbps, 4Gbps ndi 8Gbps.
(3) Mtunda wotumizira
Chizindikiro cha kuwala sichiyenera kutumizidwa kumtunda womwe ungathe kufalitsidwa mwachindunji, pamtunda wa makilomita (omwe amatchedwanso makilomita, km). Ma module a kuwala amakhala ndi izi: multimode 550m, single mode 15km, 40km, 80km, 120km, ndi zina zotero.