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Kana iyo yekufambisa chiteshi chechani chemuviri chakakwira kupfuura kudiwa kwechiratidzo chimwe, chiteshi chinogona kugovaniswa nemasaini akawanda. Semuenzaniso, trunk line yenharembozha kazhinji ine zviuru zvezviratidzo zvinofambiswa pane imwe optical fiber. Multiplexing ndiyo tekinoroji inogadzirisa ...

1) Iyo AMI kodhi Zita rakazara reiyo AMI (Alternative Mark Inversion) kodhi ndiyo alternate mark inversion kodhi. blank) inoramba isina kuchinjwa. Eg: Kodhi yemeseji: 0 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1… AMI kodhi: 0 -1 +1 0 0 0 0 0 0 0 0 -1 +1 0 0 -1 +1… The waveform inoenderana neiyo AMI kodhi ndeye ...

Apo patinotumira chiratidzo, kana chiri chiratidzo chemaziso, chiratidzo chemagetsi, kana chikwangwani chisina wire, kana chikatumirwa zvakananga, chiratidzo chinovhiringidzwa nyore nyore neruzha, uye zvakaoma kuwana ruzivo rwakarurama pamagumo ekugamuchira. Kuti uvandudze anti-kupindira abilit ...

Nzira dzekutanga dzebhinari yedhijitari modulation ndeiyi: Binary amplitude keying (2ASK) -kushanduka kweamplitude yechiratidzo chekutakura; Binary frequency shift keying (2FSK) - frequency shanduko yechiratidzo chekutakura; Binary phase shift keying (2PSK)—chikamu chekuchinja kwechiratidzo chekutakura. Differential phase shift keyin...

Iyo PON system inotora nguva-division multiplexing tekinoroji mune iyo uplink direction, uye ONU inotumira datagraphs kune iyo uplink direction zvinoenderana nenguva yechitambi yakagoverwa neOLT. Kana ONU ikaburitsa mwenje isina kupa chitambi chenguva, inopokana nemasaini ekuburitsa eimwe pa...

Nekuvandudzwa kwemaoptical communication systems ane chinhambwe chakareba, hukuru hukuru, uye kukurumidza kukurumidza, kunyanya kana imwe wave wave ichishanduka kubva pa40g kusvika 100g kana kunyange super 100g, chromatic dispersion, nonlinear effects, polarization mode dispersion, uye mamwe maitiro ekutapurirana mukati. ..