Kwemakore mazhinji ikozvino, hwaro hwekufambiswa kwedata hwave huri hwemagetsi. Zvakaoma kufungidzira muverengi wehabra uyo asina kujairana neaya matekinoroji, asi hazvigoneke kuita pasina kanenge katsananguro kapfupi mune yangu yakatevedzana yezvinyorwa.
Zviri mukati mechikamu chechinyorwa
- Chikamu 9: Musoro
- Chikamu 10: Troubleshooting pamusoro tambo TV network
Kuti upedze mufananidzo, ini ndichakuudza muchidimbu uye nenzira yakareruka nezve akati wandei ezvinhu zvebhanari (usakandire slippers kwandiri, izvi ndezveavo vasingazive zvachose): optical fiber igirazi rakatambanudzirwa mukati. shinda nhete kupfuura bvudzi. Danda rakagadzirwa nelaser rinopararira kuburikidza naro, iro (sese electromagnetic wave) rine rayo chaiyo frequency. Kuti zvive nyore uye zviri nyore, kana uchitaura nezve optics, panzvimbo ye frequency mu hertz, shandisa inverse wavelength, iyo iri mu optical range inoyerwa muma nanometers. Yekufambisa tambo yeterevhizheni chiratidzo, Ξ»=1550nm inowanzo shandiswa.
Zvikamu zvemutsetse zvakabatana kune mumwe nemumwe ne welding kana zvibatanidza. Unogona kuverenga zvakawanda pamusoro peizvi mu . Rega ndingotaura kuti CATV network inenge inogara inoshandisa APC oblique polishing.
Mufananidzo kubva kune fiber-optic-solutions.com
Inosuma kuderera zvishoma pane iyo yakananga chiratidzo, asi ine yakakosha pfuma: chiratidzo chinoratidzwa pajunction hachiparadziri pamwe chete neaxis yakafanana neyechiratidzo chikuru, nekuda kweiyo ine simba shoma pairi. Kune madhijitari ekufambisa masisitimu ane akavakirwa-mukati redundancy uye kudzoreredza algorithms, izvi zvinoita sezvisina kukosha, asi chiratidzo cheterevhizheni chakatanga rwendo rwayo sechiratidzo cheanalogi (mune fiber optics zvakare), uye kwairi izvi zvakanyanya kukosha: munhu wese anorangarira ghosting kana mufananidzo. nyura pamaTV ekare asina kugamuchirwa. Same wave phenomena inoitika pamhepo uye mumatambo. Chiratidzo cheTV yedhijitari, kunyangwe yakawedzera kusadzivirirwa kweruzha, zvisinei haina akawanda mabhenefiti epaketi data kutapurirana uye inogona zvakare kutambura padanho refizikisi, asi haigone kudzoserwa kuburikidza nekukumbirazve.
Kuti chiratidzo chifambiswe pachinhambwe chakakosha, padanho repamusoro rinodiwa, saka amplifiers anodiwa mucheni. Chiratidzo chemaziso muCATV masisitimu inowedzerwa neerbium amplifiers (EDFA). Kushanda kwechishandiso ichi muenzaniso wakanakisa wekuti chero tekinoroji yemhando yepamusoro isingazivikanwe nemashiripiti. Muchidimbu: kana danda richipfuura nepakati pefiber ine erbium, mamiriro anogadzirwa pasi peiyo imwe neimwe fotoni yemwaranzi yepakutanga inogadzira maviri clones ayo pachayo. Midziyo yakadaro inoshandiswa mumasisitimu ese ekufambisa data pamadaro marefu. Zvirokwazvo hadzina kudhura. Nokudaro, mumamiriro ezvinhu apo kukwidziridzwa kwechiratidzo nehuwandu husingadikanwi uye pasina zvidikanwi zvakasimba zvehuwandu hwemheremhere, masigner regenerator anoshandiswa:
Chishandiso ichi, sezvinoonekwa kubva padhizaini yebhuroka, inoita kaviri chiratidzo chekushandura pakati pe optical uye magetsi media. Iyi dhizaini inobvumidza iwe kuti uchinje chiratidzo wavelength kana zvichidikanwa.
Manipulations akadai sekukwidziridzwa kwechiratidzo uye kuvandudzwa anodiwa kwete kungotsiva makiromita-refu tambo attenuation. Kurasikirwa kukuru kunoitika kana chiratidzo chakakamurwa pakati pematavi emambure. Iyo kupatsanurwa kunoitwa uchishandisa passive midziyo, iyo, zvichienderana nezvinodiwa, inogona kuva nenhamba yakasiyana yematepi, uye zvakare inogona kupatsanura chiratidzo kana symmetrically kana kwete.
Mukati, muparadzi angave mafiibha akabatana nemativi ekumusoro, kana akatemerwa, semakwara ari padhinda redunhu board. Kuti ndiende zvakadzika, ndinokurudzira zvinyorwa pamusoro ΠΈ divisor saizvozvo. Iyo yakawanda matepi iyo divider ine, iyo yakawanda attenuation yainosuma muchiratidzo.
Kana isu tikawedzera mafirita kune splitter kuti aparadzanise matanda ane akasiyana wavelengths, saka tinogona kutumira masaini maviri kamwechete mune imwe fiber.
Iyi ndiyo yakapusa vhezheni yeOptical multiplexing - FWDM. Nekubatanidza CATV nemidziyo yeInternet kuTV neExpress inputs, zvichiteerana, isu tinogashira chiratidzo chakasanganiswa mune yakajairwa COM pini, iyo inogona kufambiswa pane imwe faibha, uye kune rimwe divi inogona zvakare kukamurwa pakati peanogamuchira anogamuchira uye. chinja, semuenzaniso. Izvi zvinoitika nenzira yakangofanana nekuonekwa kwemurarabungu kubva kuchiedza chichena mugirazi prism.
Nechinangwa chekuchengetedza chiratidzo chemaziso, kuwedzera kune vanogamuchira optical vane maviri ekuisa, izvo zvandakanyora nezvazvo electromechanical relay inogona kushandiswa, iyo inogona kushandura kubva kune imwe sosi kuenda kune imwe zvinoenderana neyakatsanangurwa chiratidzo paramita.
Kana imwe faibha ikashatisa, mudziyo unozochinja woenda kune imwe. Nguva yekuchinja iri pasi pesekondi, saka kune munyoreri inotarisa zvakanyanya senge chitsama chezvigadzirwa pamufananidzo weTV wedhijitari, izvo zvinongonyangarika nefuremu inotevera.
Source: www.habr.com