Mukuvaka kwemetropolitan area network (kunyanya kureba OTN optical transmission networks), wavelength division multiplexing michina inonyanya kukosha. DWDM dense wavelength division multiplexing midziyo ine kureba, yakakwirira-bandwidth kutapurirana masimba; CWDM coarse wavelength division multiplexing michina ine mutengo wakaderera. Saka kana ukasarudza iyo chaiyo wavelength division multiplexing michina yekuvaka inodhura-inoshanda optical transmission system?

Chii chakasiyanaCWDM/DWDM Multiplexer?

Parizvino, nzira inobudirira yekugadzirisa kuwedzera kwekuwedzera kwemashoko ekufambisa bandwidth ndeyekushandisa CWDM wavelength division multiplexing midziyo uye DWDM wavelength division multiplexing michina, asi yakasiyana mune zvakawanda.

(1) Channel spacing pakati peCWDM wavelength division multiplexing midziyo uye DWDM wavelength division multiplexing midziyo

Channel spacing inotsanangurwa semusiyano wezita remutakuri frequency pakati pematanho maviri ari padyo optical chiteshi, uye anowanzo shandiswa kudzivirira inter-channel kupindira. CWDM wavelength division multiplexing midziyo ine nzvimbo yakafara kupfuura DWDM wavelength division multiplexing michina. Inogona kufambisa 18 wavelengths mune spectral grid kubva 1271 nm kusvika 1611 nm ine chiteshi spacing ye20 nm. Iyo DWDM wavelength division multiplexing midziyo inogona kufambisa 40, 80 kana 160 wavelengths, uye chiteshi chepakati chinogona kuita 0.8 nm.

(2) Kuendesa kureba pakati peCWDM wavelength division multiplexing midziyo uye DWDM wavelength division multiplexing midziyo

Nekuti kureba kwe dense wavelength division multiplexing equipment (DWDM) yakanyatsobatanidzwa mu optical fiber transmission process, DWDM wavelength division multiplexing midziyo inogona kutumira marefu marefu kupfuura CWDM wavelength division multiplexing equipment. CWDM wavelength division multiplexing midziyo parizvino haigone kuwana nhanho isingagumi yekufambisa, uye iyo yakanyanya kureba yekufambisa kureba ndeye 160 makiromita chete, nepo kutapurirana kureba kweDWDM wavelength division multiplexing michina inodarika iyo yeCWDM wavelength division multiplexing michina.

(3) Modulated lasers yeCWDM wavelength division multiplexing midziyo uye DWDM wavelength division multiplexing midziyo

Iyo sisitimu yeCWDM wavelength division multiplexing michina ine yakaderera zvinodiwa pane tekinoroji zviratidzo zvelaser, uye kazhinji inoshandisa isina kunyungudutswa laser; Iyo system yeDWDM wavelength division multiplexing michina inoda kushandisa laser inotonhorera, uye laser inotonhorera inotora nzira yekugadzirisa tembiricha kuti ive nechokwadi chekuti DWDM system ine kuita zvirinani, kuchengetedzwa kwepamusoro uye hupenyu hurefu hwebasa, saka DWDM wavelength division multiplexer Inopedza simba rakawanda. kupfuura CWDM wavelength division multiplexing midziyo uchishandisa isina kutonhorera lasers

(4) Mutengo weCWDM wavelength division multiplexing midziyo uye DWDM wavelength division multiplexing midziyo

Iyo system yeDWDM wavelength division multiplexing michina ine isina-uniform yekugovera tembiricha mune yakakura wavelength renji, saka kana inotonhorera laser tekinoroji inoshandiswa kugadzirisa kutonhora, mari yekushandisa yehurongwa hweDWDM wavelength division multiplexing michina inowedzerwa. Mukuwedzera, iyo system yeDWDM wavelength division multiplexing midziyo inowanzodhura ina kusvika kushanu kudarika system yeCWDM wavelength division multiplexing equipment. Zvisinei, nekuwedzera kukurumbira kwe dense wavelength division multiplexers (DWDM), mutengo weDWDM optical modules inenge 20% -25% yakaderera pane iyo yeCWDM optical modules.