I-FTTH Optical Receiver(CT-2001C)
Uhlolojikelele
Lo mkhiqizo uyisamukeli sokubona se-FTTH. Isebenzisa ubuchwepheshe be-AGC obunamandla obuncane bokwamukela nokulawula ukubona ukuze kuhlangatshezwane nezidingo ze-fiber-to-the-home. Sebenzisa okokufaka kokubuka kathathu kokudlala, lawula ukuzinza kwesignali nge-AGC, nge-WDM, 1100-1620nm CATV isignali yokuguqulwa kwesithombe sikagesi kanye nohlelo lwe-TV yekhebula ephumayo ye-RF.
Umkhiqizo unezici zesakhiwo esihlangene, ukufakwa okulula kanye nezindleko eziphansi. Kungumkhiqizo okahle wokwakha inethiwekhi ye-cable TV FTTH.
Isici
> Igobolondo lepulasitiki lekhwalithi ephezulu elinesilinganiso esihle somlilo.
> Isiteshi se-RF esigcwele isekethe ye-GaAs yomsindo ophansi. Ukwamukela okuncane kwamasignali edijithali ngu-18dBm, futhi ukwamukelwa okuncane kwamasignali e-analog ngu -15dBm.
> Ibanga lokulawula i-AGC lingu-2~ -14dBm, futhi okukhiphayo empeleni akushintshile. (Ibanga le-AGC lingenziwa ngokwezifiso ngokusho komsebenzisi).
> Idizayini yokusetshenziswa kwamandla okuphansi, kusetshenziswa amandla aphezulu okushintsha amandla ukuze kuqinisekiswe ukwethembeka okuphezulu nokuzinza okuphezulu kokunikezwa kwamandla. Amandla asetshenziswa umshini wonke angaphansi kuka-3W, nesifunda sokuthola ukukhanya.
> I-WDM eyakhelwe ngaphakathi, qaphela uhlelo lokusebenza lokungena kwefayibha eyodwa (1100-1620nm).
> I-SC/APC ne-SC/UPC noma i-FC/APC isixhumi esibonakalayo, i-metric noma intshi yesixhumi esibonakalayo se-RF ngokuzithandela.
> Imodi yokunikeza amandla yembobo yokufaka engu-12V DC.
Izinkomba zobuchwepheshe
| Inombolo yomkhiqizo | iphrojekthi | Amapharamitha wokusebenza | ||
| Imingcele ye-Optical | ||||
| 1 | Uhlobo lwe-laser | I-Photodiode | ||
| 2 | Imodeli Yesikhulisamandla |
| I-MMIC | |
| 3 | i-wavelength yokukhanya yokufakwayo(nm) | 1100-1620nm | ||
| 4 | amandla okubona okokufaka(dBm) | -18 ~ +2dB | ||
| 5 | I-Optical reflection loss (dB) | ＞55 | ||
| 6 | Ifomu lesixhumi esibonakalayo | SC/APC | ||
| Imingcele ye-RF | ||||
| 1 | Ibanga lefrikhwensi ye-RF (MHz) | 45-1002MHz | ||
| 2 | izinga lokuphumayo(dBmV) | ＞20 Imbobo ngayinye yokuphumayo (okokufaka kokubonayo: -12 ~ -2 dBm) | ||
| 3 | flatness (dB) | ≤ ± 0.75 | ||
| 4 | Ukubuyisela Ukulahlekelwa (dB) | ≥14dB | ||
| 5 | I-impedance yokukhishwa kwe-RF | awu 75Ω | ||
| 6 | Inombolo yezimbobo zokuphuma | 1; 2 | ||
| ukusebenza kwesixhumanisi | ||||
| 1 |
77 NTSC / 59 PAL iziteshi ze-analog | I-CNR≥50 dB (0 dBm ukukhanya okokufaka) | ||
| 2 |
| I-CNR≥49Db (-1 dBm okokufaka kokukhanya) | ||
| 3 |
| I-CNR≥48dB (-2 dBm okokufaka kokukhanya) | ||
| 4 |
| I-CSO ≥ 60 dB, CTB ≥ 60 dB | ||
| Izici ze-TV yedijithali | ||||
| 1 | I-MER (dB) | ≥31 | -15dBm amandla okubona okokufaka | |
| 2 | I-OMI (%) | 4.3 | ||
| 3 | I-BER (dB) | <1.0E-9 | ||
| okunye | ||||
| 1 | i-voltage (AC/V) | 100～240 (Okokufaka kwe-adaptha) | ||
| 2 | I-voltage yokufaka (DC/V) | +5V (okokufaka kwe-FTTH, ukuphuma kwe-adaptha) | ||
| 3 | Izinga lokushisa lokusebenza | -0℃~+40℃ | ||
Umdwebo wohlelo
Isithombe somkhiqizo
FAQ
Q1. Yini i-FTTH optical receiver?
A: I-FTTH optical receiver iyidivayisi esetshenziswa kunethiwekhi ye-fiber-to-the-home (FTTH) ukuze yamukele amasignali okubona athunyelwa ngamakhebuli okubona futhi awaguqulele kudatha esebenzisekayo noma amasignali.
Q2. Sisebenza kanjani isamukeli se-FTTH esibonakalayo?
A: Isamukeli sokubona se-FTTH sisebenzisa ukwamukela okubonakalayo okunamandla aphansi kanye nobuchwepheshe be-optical automatic gain control (AGC). Yamukela okokufaka kwe-optical play kathathu futhi igcina ukuqina kwesignali nge-AGC. Iguqula isignali ye-CATV engu-1100-1620nm ibe okokukhiphayo kwe-RF kagesi ngohlelo lwekhebula.
Q3. Yiziphi izinzuzo zokusebenzisa i-FTTH optical receiver?
A: Izinzuzo zokusebenzisa izamukeli ze-FTTH optical zihlanganisa ikhono lokusekela ukuthunyelwa kwe-fiber-to-the-home, okungahlinzeka nge-inthanethi enesivinini esikhulu, i-TV nezinsizakalo zocingo ngefayibha eyodwa. Ihlinzeka ngokusetshenziswa kwamandla okuphansi, ukwamukela isignali okuzinzile kanye nokuguqulwa kwe-photoelectric esebenza kahle kakhulu kumasiginali we-CATV.
Q4. Ingabe isamukeli esibonakalayo se-FTTH singakwazi ukuphatha ubude obuhlukahlukene bamaza?
A: Yebo, abamukeli be-FTTH optical abanekhono le-WDM (Wavelength Division Multiplexing) bangakwazi ukuphatha amaza amaza ahlukahlukene, ngokuvamile phakathi kuka-1100-1620nm, okubenza bakwazi ukuphatha amasignali ahlukahlukene e-CATV adluliswa phezu kwezintambo ze-fiber optic.
Q5. Yini ukubaluleka kobuchwepheshe be-AGC kumamukeli obonakalayo we-FTTH?
A: Ubuchwepheshe be-Automatic Gain Control (AGC) kumazamukeli obonakalayo we-FTTH buqinisekisa ukuzinza kwesignali ngokulungisa amandla okufaka okubonayo ukuze kugcinwe ileveli yesiginali engaguquki. Lokhu kuvumela ukudluliswa okuthembekile, okungaphazanyiswa kwamasignali e-CATV, kuqinisekisa ukusebenza kahle kwezinhlelo zokusebenza ze-fiber-to-the-home.
