Munyaya dzekutaurirana, kubatana kwedata centre, uye kutakurwa kwemavhidhiyo, fiber optic cables inodiwa zvikuru. Zvisinei, chokwadi ndechekuti fiber optic cables haisisiri sarudzo inodhura kana inokwanisika yekushandisa kune yega yega sevhisi. Saka kushandisa Wavelength Division Multiplexing (WDM) yekuwedzera kugona kwefiber pane fiber infrastructure iripo kunokurudzirwa zvikuru. WDM itekinoroji inosanganisa masaini akawanda e optical pane fiber imwe chete nekushandisa mawavelength akasiyana echiedza che laser. Kuongororwa nekukurumidza kweminda yeWDM kuchaitwa paCWDM neDWDM. Zvakavakirwa papfungwa imwechete yekushandisa mawavelength akawanda echiedza pane fiber imwe chete. Asi zvese zvine zvazvakanakira nezvazvakaipira.
Chii chinonzi CWDM?
CWDM inotsigira nzira dzemafungu dzinosvika gumi nemasere dzinotumirwa kuburikidza nefaibha panguva imwe chete. Kuti izvi zviitike, mafungu akasiyana enzira imwe neimwe akaparadzana ne20nm. DWDM, inotsigira nzira dzemafungu dzinosvika makumi masere panguva imwe chete, imwe neimwe yenzira dzakaparadzana ne0.8nm chete. Tekinoroji yeCWDM inopa mhinduro iri nyore uye isingadhuri yedaro pfupi rinosvika makiromita makumi manomwe. Padaro riri pakati pemakiromita makumi mana nemakumi manomwe, CWDM inowanzo ganhurira kutsigira nzira sere.
Sisitimu yeCWDM inowanzo tsigira mawavelength masere pafayibha imwe neimwe uye yakagadzirirwa kutaurirana kwenguva pfupi, ichishandisa mafrequency akafara ane mawavelength akapararira kure.
Sezvo CWDM yakavakirwa pa20-nm channel spacing kubva pa1470 kusvika 1610 nm, inowanzo shandiswa pafiber spans inosvika 80km kana pasi nekuti optical amplifiers haigone kushandiswa ne hombe spacing channels. Iyi spacing yakakura ye channels inobvumira kushandiswa kwe optics ine mutengo uri pakati nepakati. Zvisinei, kugona kwe links pamwe nedaro rinotsigirwa zvishoma neCWDM pane neDWDM.
Kazhinji, CWDM inoshandiswa pakushandisa zvinhu zvinodhura zvishoma, simba shoma (sub-10G) uye mashandisirwo edaro diki uko mutengo uri chinhu chakakosha.
Munguva pfupi yapfuura, mitengo yezvinhu zveCWDM neDWDM yave kuenzana zvine mwero. Mawavelength eCWDM parizvino anokwanisa kutakura kusvika ku10 Gigabit Ethernet ne16G Fiber Channel, uye hazvigoneke kuti kugona uku kuwedzere mune ramangwana.
Chii chinonzi DWDM?
Kusiyana neCWDM, DWDM connections dzinogona kuwedzerwa uye, nekudaro, dzinogona kushandiswa kutumira data kure kure.
Mumasystem eDWDM, huwandu hwemachannel ane multiplexed hwakanyanya kusimba kupfuura CWDM nekuti DWDM inoshandisa wavelength spacing yakasimba kuti ikwane machannel akawanda pane fiber imwe chete.
Panzvimbo penzvimbo ye20 nm channel spacing inoshandiswa muCWDM (yakaenzana neanosvika mamiriyoni gumi nemashanu eGHz), masisitimu eDWDM anoshandisa nzvimbo dzakasiyana-siyana dzechannels dzakatarwa kubva pa12.5 GHz kusvika 200 GHz muC-Band uye dzimwe nguva L-band.
Masisitimu eDWDM emazuva ano anowanzo tsigira nzira 96 dzakaparadzaniswa ne0.8 nm mukati me1550 nm C-Band spectrum. Nekuda kweizvi, masisitimu eDWDM anogona kutumira data rakawanda kuburikidza nefiber link imwe chete sezvo achibvumira mawavelength akawanda kuti arongedzwe pafiber imwe chete.
DWDM yakanakira kutaurirana kwenguva refu kusvika 120 km zvichikwira nekuda kwekugona kwayo kushandisa ma optical amplifiers, ayo anogona kuwedzera 1550 nm kana C-band spectrum yese inoshandiswa muDWDM applications nenzira inodhura zvishoma. Izvi zvinokunda nguva refu yekurerutswa kana daro uye kana zvichiwedzerwa neErbium Doped-Fiber Amplifiers (EDFAs), masisitimu eDWDM ane kugona kutakura data rakawanda mudaro refu rinosvika mazana kana zviuru zvemakiromita.
Pamusoro pekugona kutsigira huwandu hwakawanda hwema wavelengths kupfuura CWDM, mapuratifomu eDWDM anokwanisawo kubata maprotocol ekumhanya kwakanyanya sezvo vatengesi vazhinji vemidziyo yekufambisa yemaziso nhasi vanowanzo tsigira 100G kana 200G pawavelength imwe neimwe nepo matekinoroji matsva achibvumira 400G zvichikwira.
Kuyera kwewavelength yeDWDM vs CWDM:
CWDM ine nzvimbo yakakura yechiteshi kupfuura DWDM -- musiyano wehuwandu kana wavelength pakati penzira mbiri dzemagetsi dziri pedyo.
Masisitimu eCWDM anowanzo takura mawavelength masere ane nzvimbo ye20 nm mu spectrum grid kubva pa1470 nm kusvika 1610 nm.
Masisitimu eDWDM, kune rumwe rutivi, anogona kutakura mawavelengths e40, 80, 96 kana kusvika 160 nekushandisa nzvimbo yakamanikana ye0.8/0.4 nm (100 GHz/50 GHz grid). Mawavelengths eDWDM anowanzova kubva pa1525 nm kusvika 1565 nm (C-band), uye mamwe masisitimu anokwanisawo kushandisa mawavelengths e1570 nm kusvika 1610 nm (L-band).
Zvakanakira CWDM:
1. Mutengo Wakaderera
CWDM yakachipa zvikuru pane DWDM nekuda kwemitengo yehardware. Sisitimu yeCWDM inoshandisa malaser akatonhorera akachipa zvikuru pane malaser asina kutonhodzwa eDWDM. Pamusoro pezvo, mutengo wema transceivers eDWDM unowanzo kudhura zvakapetwa kana kana kashanu kupfuura wema modules avo eCWDM. Kunyangwe mari yekushandisa yeDWDM yakakwira kupfuura CWDM. Saka CWDM isarudzo yakanaka kune avo vane miganho mukubhadhara mari.
2. Kudiwa kweSimba
Zvichienzaniswa neCWDM, zvinodiwa nemagetsi eDWDM zvakanyanya. Sezvo malaser eDWDM pamwe chete nemonitor ne control circuitry zvinoshandisa anenge 4 W pa wavelength. Panguva imwe chete, CWDM laser transmitter isina kutonhora inoshandisa angangoita 0.5 W yesimba. CWDM i tekinoroji isingashandise magetsi. Ine zvayakanakira pamari kune vanoshandisa internet.
3. Kushanda Zviri Nyore
Masisitimu eCWDM anoshandisa tekinoroji iri nyore kana tichienzanisa neDWDM. Anoshandisa LED kana Laser pakupa simba. Mafirita emafungu emasisitimu eCWDM madiki uye akachipa. Saka zviri nyore kuisa nekushandisa.
Zvakanakira DWDM:
1. Kuvandudzwa Kunochinjika
DWDM inochinjika uye yakasimba maererano nemarudzi efaibha. Kuvandudzwa kweDWDM kuenda kumachannel gumi nematanhatu kunoshanda pane ese mafaibha eG.652 neG.652.C. Pakutanga nekuda kwekuti DWDM inogara ichishandisa nzvimbo yakaderera yekurasikirwa kwefaibha. Kunyange zvazvo masisitimu eCWDM ane chiteshi gumi nematanhatu anosanganisira kutapurirana munzvimbo ye1300-1400nm, uko kudzikira kwesimba kwakanyanya.
2. Kukwanisa kukura
Mhinduro dzeDWDM dzinobvumira kuvandudzwa mumatanho ematanho masere kusvika pamatanho anosvika makumi mana. Dzinobvumira kugona kukuru kwefiber pane mhinduro yeCWDM.
3. Kureba Kwekutumira
DWDM inoshandisa bhendi re1550 wavelength iro rinogona kuwedzerwa uchishandisa ma amplifiers emagetsi emazuva ano (EDFA). Rinowedzera daro rekutumira mashoko kusvika kumazana emakiromita.
Mufananidzo unotevera uchakupa mufananidzo unooneka wemusiyano uripo pakati peCWDM neDWDM.
Nguva yekutumira: Chikumi-14-2022