Don saduwa da karuwar buƙatun bayanai na mutane, yawan watsawar tsarin sadarwar fiber na gani yana ƙaruwa kowace rana. Cibiyoyin sadarwa na gani na gaba za su haɓaka zuwa cibiyar sadarwar fiber na gani tare da ultra-high speed, ultra-man-manpower, ultra-long nisa, da ultra-high bakan inganci. Mai watsawa yana da mahimmanci. Na'urar watsa siginar gani mai saurin gaske ta ƙunshi na'ura mai ɗaukar hoto mai ɗaukar hoto, da na'urar samar da siginar lantarki, da na'ura mai sauri mai saurin gani wanda ke daidaita na'urar ɗaukar hoto. Idan aka kwatanta da sauran nau'o'in modulators na waje, lithium niobate electro-optical modulators suna da fa'idodin mitar aiki mai kyau, kwanciyar hankali mai kyau, babban ɓarna, ƙimar aiki mai ƙarfi, ƙimar daidaitawa, ƙaramin ƙararrawa, haɗin kai mai sauƙi, fasahar samar da balagagge, da sauransu. ana amfani dashi ko'ina a cikin babban sauri, babban ƙarfi, da tsarin watsawa na gani mai nisa.
Wutar lantarki ta rabin-girgiza shine madaidaicin ma'auni na zahiri na na'urar motsa jiki ta lantarki. Yana wakiltar canji a cikin wutar lantarki na son zuciya daidai da ƙarfin fitowar hasken wutar lantarki na lantarki daga mafi ƙaranci zuwa mafi girma. Yana ƙayyadad da na'ura mai amfani da wutar lantarki zuwa babban matsayi. Yadda za a auna daidai da sauri da sauri ƙarfin wutar lantarki na rabin-wave na lantarki-optic modulator yana da mahimmanci ga haɓaka aikin na'urar da haɓaka ingancin na'urar. Wutar lantarki ta rabin-kala na na'urar lantarki-optic modulator ya haɗa da DC (rabin igiyar ruwa
ƙarfin lantarki da mitar rediyo) ƙarfin lantarki na rabin-kalaman. Aikin canja wuri na na'urar motsa jiki ta lantarki shine kamar haka:
Daga cikin su akwai fitar da ikon gani na lantarki modulator;
Shin shigar da ikon gani na mai modulator ne;
Shin asarar shigar da na'urar motsa jiki ta lantarki;
Hanyoyin da ake da su na auna wutar lantarki na rabin igiyar igiyar ruwa sun haɗa da matsanancin ƙima da kuma hanyoyin ninka mitar mita, waɗanda za su iya auna ƙarfin wutar lantarki na rabin-wave kai tsaye (DC) da mitar rediyo (RF) rabin-wave na modulator, bi da bi.
Tebura 1 Kwatankwacin hanyoyin gwajin wutar lantarki na rabin igiyar ruwa guda biyu
| Hanyar ƙima | Hanyar ninka mitoci | |
| Kayan aikin dakin gwaje-gwaje | Laser samar da wutar lantarki Modulator mai ƙarfi a ƙarƙashin gwaji Daidaitaccen wutar lantarki na DC ± 15V Mitar wutar gani | Madogarar hasken Laser Modulator mai ƙarfi a ƙarƙashin gwaji Daidaitaccen wutar lantarki na DC Oscilloscope tushen sigina (DC Bias) |
| lokacin gwaji | 20min () | 5 min |
| Amfanin gwaji | mai sauƙin cim ma | Gwaji daidai gwargwado Za a iya samun wutar lantarki rabin-kalaman DC da ƙarfin rabin-kalaman RF a lokaci guda |
| Lalacewar gwaji | Dogon lokaci da sauran dalilai, gwajin ba daidai ba ne Gwajin fasinja kai tsaye wutar lantarki rabin-kalaman DC | Dangantakar dogon lokaci Dalilai kamar babban kuskuren yanke hukunci na murdiya, da sauransu, gwajin ba daidai bane |
Yana aiki kamar haka:
(1) Hanyar ƙima
Ana amfani da matsananciyar hanyar ƙima don auna ƙarfin wutar lantarki na rabin-wave na na'urar motsa jiki ta lantarki. Na farko, ba tare da siginar daidaitawa ba, ana samun madaidaicin aikin na'ura mai amfani da wutar lantarki ta hanyar auna ƙarfin wutar lantarki na DC da ƙarfin hasken fitarwa, kuma daga yanayin aikin canja wuri Ƙayyade matsakaicin ƙimar ƙimar da mafi ƙarancin ƙimar ƙimar, kuma sami daidaitattun ƙimar wutar lantarki na DC Vmax da Vmin bi da bi. A ƙarshe, bambanci tsakanin waɗannan ƙimar ƙarfin lantarki guda biyu shine ƙarfin rabin igiyar ruwa Vπ=Vmax-Vmin na injin sarrafa wutar lantarki.
(2) Hanyar ninka mitoci
Yana yin amfani da hanyar ninka mitar mitar don auna ƙarfin rabin igiyar igiyar ruwa na RF na lantarki-optic modulator. Ƙara komfuta na son zuciya na DC da siginar daidaitawa ta AC zuwa na'urar lantarki-optic a lokaci guda don daidaita ƙarfin wutar lantarki na DC lokacin da aka canza ƙarfin hasken fitarwa zuwa matsakaicin ko ƙarami. A lokaci guda, kuma ana iya lura a kan oscilloscope biyu-trace cewa siginar da aka daidaita za ta bayyana murdiya sau biyu. Bambanci kawai na wutar lantarki na DC wanda ya yi daidai da murdiya biyu masu kusa da mitar ninki biyu shine ƙarfin rabin igiyar igiyar ruwa ta RF na na'urar lantarki-optic modulator.
Takaitacciyar hanya: Duka babbar hanyar ƙima da hanyar mitar ninki biyu na iya ƙayyadad da ƙayyadaddun ƙayyadaddun ƙayyadaddun wutar lantarki na rabin-wave na na'urar motsa jiki ta lantarki, amma idan aka kwatanta, hanyar ƙima mai ƙarfi tana buƙatar tsawon lokacin awo, kuma tsawon lokacin auna zai kasance saboda Ƙarfin gani na laser yana jujjuyawa kuma yana haifar da kurakuran aunawa. Hanyar ƙima ta matsananciyar tana buƙatar bincika son zuciya na DC tare da ƙaramin matakin ƙima da yin rikodin ƙarfin gani na mai daidaitawa a lokaci guda don samun ingantacciyar ƙimar wutar lantarki ta rabin-kalaman DC.
Hanyar ninka mitar hanya hanya ce ta tantance ƙarfin rabin igiyar igiyar ruwa ta hanyar lura da mitar ninki biyu. Lokacin da ƙarfin wutar lantarki da aka yi amfani da shi ya kai wani ƙima, murdiya ta ninka yawan mitar takan faru, kuma murɗawar siginar igiyar ruwa ba ta zama sananne ba. Ba shi da sauƙi a lura da ido tsirara. Ta wannan hanyar, babu makawa zai haifar da ƙarin kurakurai masu mahimmanci, kuma abin da yake auna shi shine ƙarfin wutar lantarki na rabin-wave na RF na lantarki-optic modulator.