1, modem ye optical ndiyo chiratidzo che optical chinopinda mu Ethernet electrical signal tool, modem ye optical inonzi modem pakutanga, rudzi rwe computer hardware, iri mu terminal yekutuma kuburikidza ne modulation yema digital signals kuita analog signals, uye pa terminal yekugashira kuburikidza ne demodulation ma analog signals kuita digital signals mudziyo.
Optical Network Unit (ONU) iyuniti ye optical network. ONU yakakamurwa kuita active optical network units uye passive optical network units. ONU inonyanya kushandiswa kugamuchira data rinotumirwa neOLTs. Kuwedzera pabasa re light cat, ONU inewo basa re switch.
2, onu yakakamurwa kuita a, b, c kirasi, ese matatu i optical access, asi kuti vashandisi vawane huwandu hwema ports, mhando dzema ports dzakasiyana, optical modem ikirasi onu.
Modem yeOptical, inozivikanwawo seOptical Cat, chishandiso chenetwork chinotumira masaini eOptical kune mamwe masaini eprotocol kuburikidza neOptical fiber media. Ichi chishandiso chekutumira masaini eOptical kune network hombe yeLocal Area Network (LAN), Metropolitan Area Network (MAN), uye Wide Area Network (WAN). Chishandiso ichi chine kutumira, kugamuchira, kudzora, interface, uye magetsi. Chinoshandisa large-scale integrated chip, simple circuit, low power consumption, high reliability, complete alarm status indicator, uye perfect network management function.
Kutaurirana nefiber yemaziso kwakakurumidza kukura kuva nzira huru yekutumira ruzivo nekuda kwezvakanaka zvayo zvakaita seband yakafara uye kugona kukuru. Kuti kutaurirana kwemaziso kuvepo, optical modulation uye demodulation zvinofanirwa kuitwa. Saka, sechishandiso chakakosha che optical fiber communication system, optical modem iri kugamuchira kutariswa kwakawanda. Kune mhando mbiri dze optical modulators: direct modulator ne external modulator, uye optical demodulator yakakamurwa kuita mhando mbiri: ine uye isina built-in front amplifier. Direct modulator ne demodulator ine built-in front amplifier ndizvo zvinonyanya kutariswa pachirongwa ichi. Direct modulation ine zvakanakira zvekureruka, kuchengetedza mari uye nyore kushandisa, nepo demodulator ine built-in front amplifier ine hunhu hwekubatanidzwa kwakanyanya uye saizi diki.
Modem ye optical mudziyo wekutumira unogona kubatanidzwa kuInternet nekubatanidza tambo ye network, zvakafanana neInternet light cat yedu, asi chikamu chepamusoro chekati chakabatana ne circuit, uye chikamu chepamusoro che optical modemis chakabatana ne light path, saka chinonzi light cat. Katsi yakabatana ne light path. Chikamu chepazasi che onu mu epon/GPON chakabatana nemushandisi.
1, modem ye optical rudzi rwe onu, ndeyemushandisi mumwe chete, modem ye optical inogonawo kunzi desktop onu.
2, onu huru ndeyevashandisi vakawanda, kureva kuti, chiteshi chemagetsi chine maponi masere kusvika makumi maviri nemana. Modem ye optical ine maponi emagetsi 1-4 chete.
Musiyano uripo pakati pemodem ye optical neONU:
Modem ye optical inowanzo shandiswa kana paine vatengi vakawanda, kunyanya pakuwana data rakakosha.
Optical modem card type uye desktop card, card type inowanzoisa muchina room.
Desktop inowanzoiswa pamutengi. ONU inoshandiswa pakuwana network yekugara yebroadband. Musiyano mukuru uri kubva ku integrated room card optical cat kusvika ku client desktop optical cat, peya ye optical cats ine ma fiber maviri, uye kubva ku integrated room OLT kusvika kumutengi ma ONU akawanda anongogarawo ma fiber maviri chete, uye pakati pacho panopinda nekupatsanurana. Musiyano uripo pakati pe optical modem ne ONU ndewekuti ONU inochengetedza fiber core resources, uye optical modem yakachipa, uye peya ye light cats ine mazana akati wandei ezvidimbu. Rudzi rwekushandisa, ongororo yakazara yemutengo, zvichienderana nemamiriro ezvinhu.
Nguva yekutumira: Zvita-14-2023