一,Mfundo ya photoreceptor
Thekuwala wolandilandi gawo lofunikira la optical fiber communication system.Mfundo yake yaikulu ndikusintha zizindikiro za kuwala kukhala zizindikiro zamagetsi.Zigawo zazikulu za wolandila kuwala zimaphatikizapo photodetector, preamplifier ndi postamplifier.Pamene chizindikiro cha kuwala chikutumizidwa ku photodetector kudzera mu fiber optical, photodetector imatembenuza chizindikiro cha kuwala kukhala chizindikiro chamagetsi, ndiyeno chizindikirocho chimakulitsidwa ndikusefedwa kupyolera mu preamplifier, ndipo potsirizira pake amakonzedwanso ndikufalitsidwa kudzera mu postamplifier.
二,Ntchito ya photoreceptor
1. Kusintha kwa ma siginecha owoneka kukhala ma siginecha amagetsi:Ntchito yofunikira kwambiri ya wolandila kuwala ndikusintha ma siginecha opatsirana kukhala ma siginecha amagetsi kuti athandizire kukonza ndi kutumiza ma siginecha.Izi zimachitika pogwiritsa ntchito ma photodetectors, omwe amazindikira zizindikiro zofooka za kuwala ndikuzisintha kukhala zizindikiro zamagetsi.
2. Kukulitsa chizindikiro:Popeza mphamvu ya chizindikiro cha kuwala idzachepa pang'onopang'ono panthawi ya njira yotumizira ma fiber optical, mphamvu ya chizindikiro cha optical ikhoza kukhala yofooka kwambiri ikafika pa optical receiver.Makina opangira ma preamplifier mu cholandirira optical amatha kukulitsa ma siginecha opanda mphamvu awa kuti athe kukonzedwa bwino ndikufalitsidwa.
3. Kusefa kwa ma Signal:Panthawi yotumizira ma fiber optical, maphokoso osiyanasiyana ndi zosokoneza zitha kuyambitsidwa, zomwe zingakhudze mtundu wa chizindikirocho.Chojambulira chomwe chili mu cholandila chowonera nthawi zambiri chimakhala ndi zosefera kuti zichotse phokoso ndi zosokoneza ndikuwongolera mtundu wa chizindikiro.
4. Kusintha kwa ma Signal:Positi-amplifier ikhoza kupititsa patsogolo chizindikiro chamagetsi, monga decoding, demodulation, etc., kotero kuti ikhoza kubwezeretsedwa ku chizindikiro choyambirira cha digito kapena analogi.Kuonjezera apo, kupyolera mu post-amplifier, chizindikiro cha magetsi chingathenso kusinthidwa ndi kukonzedwa bwino, monga kusintha matalikidwe, mafupipafupi ndi magawo ena a chizindikiro, kuti athe kukwaniritsa zofunikira za machitidwe oyankhulana.
5. Zizindikiro zamagetsi:Zizindikiro zamagetsi zomwe zakonzedwa zimatha kutulutsidwa ku zida zina kapena machitidwe kuti akwaniritse kufalitsa ndi kugawana zidziwitso.Mwachitsanzo, mu optical fiber communication system, zizindikiro zamagetsi zomwe zimagwiritsidwa ntchito ndi wolandila kuwala zimatha kutumizidwa ku makompyuta, ma switch kapena zipangizo zina zoyankhulirana.
三,Chiyambi cha CEITATECH FTTH Optical receiver
1.FTTH Optical Receiver(CT-2001C)Mwachidule
Izi ndi FTTH kuwala wolandila.Imatengera ukadaulo wocheperako wolandila komanso wowongolera wa AGC kuti ukwaniritse zosowa za fiber-to-the-home.Gwiritsani ntchito kulowetsa katatu kowonera, kuwongolera kukhazikika kwa siginecha kudzera pa AGC, ndi WDM, 1100-1620nm CATV chizindikiro cha photoelectric kutembenuka ndi pulogalamu ya RF yotulutsa chingwe TV.
Zogulitsazo zimakhala ndi mawonekedwe a compact, kukhazikitsa kosavuta komanso mtengo wotsika.Ndi mankhwala abwino kumanga chingwe TV FTTH maukonde.
FTTH Optical Receiver(CT-2001C)
l Chipolopolo chapulasitiki chapamwamba kwambiri chokhala ndi moto wapamwamba kwambiri.
l RF njira yodzaza ndi GaAs otsika phokoso amplifier dera.Kulandila kocheperako kwa ma siginecha a digito ndi -18dBm, ndipo kulandila kochepa kwa ma analogi ndi -15dBm.
l AGC control range ndi -2~ -14dBm, ndipo zotuluka zake sizisintha.(Mtundu wa AGC ukhoza kusinthidwa malinga ndi wogwiritsa ntchito).
l Kugwiritsa ntchito mphamvu pang'ono, kugwiritsa ntchito mphamvu zosinthira mphamvu kwambiri kuti zitsimikizire kudalirika kwakukulu komanso kukhazikika kwamagetsi.Kugwiritsa ntchito mphamvu kwa makina onse ndi ochepera 3W, ndi dera lozindikira kuwala.
l Womangidwa mu WDM, zindikirani khomo lolowera ulusi umodzi (1100-1620nm).
l SC/APC ndi SC/UPC kapena FC/APC kuwala cholumikizira, metric kapena inchi RF mawonekedwe kusankha kusankha.
l Njira yamagetsi ya 12V DC yolowetsa doko.
1.1Chithunzi chojambula
2.FTTH Optical Receiver(CT-2002C)Mwachidule
Izi ndi FTTH kuwala wolandila, ntchito otsika mphamvu kuwala kulandira ndi kuwala kulamulira AGC luso, amene angathe kukwaniritsa zosowa CHIKWANGWANI-kunyumba, ndipo angagwiritsidwe ntchito molumikizana ndi ONU kapena EOC kukwaniritsa sewero katatu.Pali WDM, 1550nm CATV chizindikiro photoelectric kutembenuka ndi RF linanena bungwe, 1490/1310 nm PON chizindikiro mwachindunji akudutsa, amene angakumane FTTH wina kuwala CHIKWANGWANI kufala CATV + EPON.
The mankhwala ndi yaying'ono mu dongosolo ndi yosavuta kukhazikitsa, ndipo ndi mankhwala abwino pomanga chingwe TV FTTH maukonde.
FTTH Optical Receiver(CT-2002C)
l Chipolopolo chapulasitiki chapamwamba kwambiri chokhala ndi moto wapamwamba kwambiri.
l RF njira yodzaza ndi GaAs otsika phokoso amplifier dera.Kulandila kocheperako kwa ma siginecha a digito ndi -18dBm, ndipo kulandila kochepa kwa ma analogi ndi -15dBm.
l AGC control range ndi -2~ -12dBm, ndipo zotuluka zake sizinasinthe.(AGC
osiyanasiyana akhoza makonda malinga ndi wosuta).
l Kugwiritsa ntchito mphamvu pang'ono, kugwiritsa ntchito mphamvu zosinthira mphamvu kwambiri kuti zitsimikizire kudalirika kwakukulu komanso kukhazikika kwamagetsi.Kugwiritsa ntchito mphamvu kwa makina onse ndi ochepera 3W, ndi dera lozindikira kuwala.
l WDM yomangidwa, zindikirani khomo la fiber imodzi (1490/1310/1550nm) kuseweredwa katatu.
l SC/APC kapena FC/APC cholumikizira kuwala, metric kapena inchi RF mawonekedwe kusankha.
l Njira yamagetsi ya 12V DC yolowetsa doko.
2.2Chithunzi chojambula
Nthawi yotumiza: Jan-13-2024
