Ngati mtunda wotumizira uli wautali kwambiri (woposa makilomita 100), chizindikiro cha kuwala chimakhala ndi kutayika kwakukulu. Kale, anthu nthawi zambiri ankagwiritsa ntchito zobwerezabwereza za kuwala kuti awonjezere chizindikiro cha kuwala. Zipangizo zamtunduwu zimakhala ndi zofooka zina pakugwiritsa ntchito. Zimalowedwa m'malo ndi chowonjezera cha ulusi wa kuwala. Mfundo yogwirira ntchito ya chowonjezera cha ulusi wa kuwala ikuwonetsedwa pachithunzi chili pansipa. Chingathe kukulitsa mwachindunji chizindikiro cha kuwala popanda kudutsa mu njira yosinthira kuwala-magetsi-mawonekedwe.
Kodi chowonjezera cha fiber chimagwira ntchito bwanji?
Ngati mtunda wotumizira uli wautali kwambiri (woposa makilomita 100), chizindikiro cha kuwala chimakhala ndi kutayika kwakukulu. Kale, anthu nthawi zambiri ankagwiritsa ntchito zobwerezabwereza za kuwala kuti awonjezere chizindikiro cha kuwala. Zipangizo zamtunduwu zimakhala ndi zofooka zina pakugwiritsa ntchito. Zimalowedwa m'malo ndi chowonjezera cha ulusi wa kuwala. Mfundo yogwirira ntchito ya chowonjezera cha ulusi wa kuwala ikuwonetsedwa pachithunzi chili pansipa. Chingathe kukulitsa mwachindunji chizindikiro cha kuwala popanda kudutsa mu njira yosinthira kuwala-magetsi-mawonekedwe.
Kodi pali mitundu iti ya ma amplifiers a fiber?
1. Chokulitsa cha fiber chopangidwa ndi Erbium (EDFA)
Chojambulira cha ulusi chopangidwa ndi erbium (EDFA) chimapangidwa makamaka ndi ulusi wopangidwa ndi erbium, gwero la kuwala kwa pampu, cholumikizira cha optical, chosungunula kuwala, ndi fyuluta yowala. Pakati pawo, ulusi wopangidwa ndi erbium ndi gawo lofunikira la kukulitsa chizindikiro cha optical, chomwe chimagwiritsidwa ntchito kwambiri kuti chikwaniritse kukulitsa chizindikiro cha optical cha 1550 nm, chifukwa chake, chojambulira cha ulusi chopangidwa ndi erbium (EDFA) chimagwira ntchito bwino kwambiri pamlingo wa wavelength kuyambira 1530 nm mpaka 1565 nm.
Aphindu:
Kugwiritsa ntchito mphamvu kwambiri pampu (kuposa 50%)
Ikhoza kukulitsa mwachindunji komanso nthawi yomweyo chizindikiro cha kuwala mu gulu la 1550 nm
Kuwonjezeka kwa 50 dB
Phokoso lochepa mu transmission yakutali
kusowa
Erbium-doped fiber amplifier (EDFA) ndi yayikulu
Zipangizozi sizingagwire ntchito mogwirizana ndi zida zina za semiconductor
2. Raman amplifier
Chida chothandizira cha Raman ndicho chokhacho chomwe chingakulitse zizindikiro za kuwala mu gulu la 1292 nm ~ 1660 nm. Mfundo yake yogwirira ntchito imachokera pa mphamvu ya Raman yofalikira mu ulusi wa quartz. Monga momwe zasonyezedwera pachithunzi chili pansipa, pamene kuwala kwa pampu kukukokedwa Pamene chizindikiro chofooka cha kuwala mu bandwidth ya Mann ndi mafunde amphamvu a kuwala kwa pampu zimatumizidwa nthawi imodzi mu ulusi wa kuwala, chizindikiro chofooka cha kuwala chidzakulitsidwa chifukwa cha mphamvu ya Raman yofalikira.
Aphindu:
Mitundu yosiyanasiyana ya magulu oyenerera
Ingagwiritsidwe ntchito mu mapulogalamu oyika ma fiber-mode single-mode
Zingathe kuwonjezera zofooka za erbium-doped fiber amplifier (EDFA)
Kugwiritsa ntchito mphamvu zochepa, kulankhulana kochepa
kusowa:
Mphamvu yayikulu ya pampu
Dongosolo lowongolera phindu lovuta
Phokoso
3. Semiconductor optical fiber amplifier (SOA)
Ma amplifiers a semiconductor optical fiber (SOA) amagwiritsa ntchito zipangizo za semiconductor ngati njira yopezera mphamvu, ndipo ma input awo a optical signal ndi output ali ndi zophimba zotsutsana ndi kuwunikira kuti alepheretse kuwunikira kumapeto kwa amplifier ndikuchotsa mphamvu ya resonator.
Aphindu:
voliyumu yaying'ono
Mphamvu yotsika yotulutsa
Bandwidth ya gain ndi yaying'ono, koma ingagwiritsidwe ntchito m'magulu osiyanasiyana
Ndi yotsika mtengo kuposa erbium-doped fiber amplifier (EDFA) ndipo ingagwiritsidwe ntchito ndi zida za semiconductor
Ntchito zinayi zosalunjika za cross-gain modulation, cross-phase modulation, wavelength conversion ndi four-wave mixing zitha kuchitika.
kusowa:
Magwiridwe antchito si apamwamba kwambiri monga erbium-doped fiber amplifier (EDFA)
Phokoso lalikulu komanso phindu lochepa
Nthawi yotumizira: Sep-17-2021