Momwe Fiber Optic Reflectors Amagwiritsidwira ntchito mu PON Network Link Monitoring

Mu ma network a PON (Passive Optical Network), makamaka mkati mwa zovuta za point-to-multipoint PON ODN (Optical Distribution Network) topologies, kuyang'anira mwachangu ndi kuzindikira zolakwika za fiber kumabweretsa zovuta zazikulu. Ngakhale ma optical time domain reflectometers (OTDRs) ndi zida zogwiritsidwa ntchito kwambiri, nthawi zina sakhala ndi mphamvu zokwanira zodziwira kutsika kwa siginecha mu ulusi wa nthambi ya ODN kapena kumapeto kwa fiber ya ONU. Kuyika chowunikira chotsika mtengo chawavelength-selective fiber ku mbali ya ONU ndichizoloŵezi chodziwika bwino chomwe chimathandizira kuyeza kolondola komaliza mpaka kumapeto kwa maulalo owoneka.

Fibre reflector imagwira ntchito pogwiritsa ntchito gitala ya kuwala kuti iwonetsere kuyeserera kwa OTDR komwe kumakhala ndi pafupifupi 100%. Pakadali pano, kutalika kwa magwiridwe antchito a passive optical network (PON) kumadutsa chowunikira ndikuchepetsa pang'ono chifukwa sikukhutiritsa chikhalidwe cha Bragg cha fiber grating. Ntchito yaikulu ya njirayi ndikuwerengera bwino mtengo wobwereranso wotayika wa chochitika chilichonse chakumapeto kwa nthambi ya ONU pozindikira kukhalapo ndi kulimba kwa chizindikiro cha mayeso a OTDR. Izi zimathandiza kudziwa ngati ulalo wa kuwala pakati pa OLT ndi ONU mbali ukugwira ntchito bwino. Chifukwa chake, imakwaniritsa kuyang'anira zenizeni zenizeni za zolakwika ndikuzindikira mwachangu, molondola.

Pogwiritsa ntchito zowunikira kuti zizindikire magawo osiyanasiyana a ODN, kuzindikira mwachangu, kukhazikika, komanso kusanthula kwazifukwa za zolakwika za ODN zitha kutheka, kuchepetsa nthawi yothetsa zolakwika ndikukulitsa luso loyesa komanso kukonza mizere. Muzochitika zogawanika, zowonetsera za fiber zomwe zimayikidwa kumbali ya ONU zimasonyeza zovuta pamene chowonetsera nthambi chikuwonetsa kutayika kwakukulu kobwerera poyerekeza ndi chiyambi chake chathanzi. Ngati nthambi zonse za ulusi zomwe zili ndi zowunikira nthawi imodzi zikuwonetsa kutayika kobwerera, zikuwonetsa cholakwika mu thunthu la thunthu.

Muzochitika zachiwiri zogawanitsa, kusiyana kwa kutayika kobwerera kungathenso kufananizidwa ndikuwonetsa molondola ngati zolakwika za attenuation zimachitika mu gawo la fiber kapena gawo la dontho la fiber. Kaya muzochitika zogawanika za pulayimale kapena zachiwiri, chifukwa cha kutsika kwadzidzidzi kwa nsonga zowonetsera kumapeto kwa mayendedwe a mayeso a OTDR, mtengo wobwereranso wotayika wa ulalo wautali kwambiri wanthambi mu netiweki ya ODN sungakhale woyezeka ndendende. Chifukwa chake, kusintha kwa chiwonetsero cha chiwonetsero kuyenera kuyesedwa ngati maziko a kuyeza zolakwika ndi kuzindikira.

Optical fiber reflectors amathanso kutumizidwa pamalo ofunikira. Mwachitsanzo, kukhazikitsa FBG pamaso pa Fiber-to-the-Home (FTTH) kapena Fiber-to-the-Building (FTTB), ndiyeno kuyesa ndi OTDR, kumapangitsa kufananitsa deta yoyesera motsutsana ndi deta yoyambira kuti mudziwe zolakwika zamkati / kunja kapena nyumba mkati / kunja.

Fiber optic reflectors akhoza mosavuta anaika mndandanda kumapeto kwa wosuta. Kutalika kwawo kwautali, kudalirika kokhazikika, mawonekedwe a kutentha pang'ono, ndi mawonekedwe osavuta olumikizira adaputala ndi zina mwazifukwa zomwe ali njira yabwino yowonera ulalo wa FTTx network. Yiyuantong imapereka zowunikira za FBG za fiber optic mumitundu yosiyanasiyana yamapaketi, kuphatikiza manja a chimango cha pulasitiki, manja azitsulo zachitsulo, ndi mitundu ya pigtail yokhala ndi zolumikizira za SC kapena LC.