Ina roa rawa te tawhiti tuku (neke atu i te 100 km), ka nui te ngaronga o te tohu whatu. I ngā wā o mua, i whakamahia e te tangata ngā pūwhakahoki whatu hei whakanui i te tohu whatu. He iti noa ngā herenga o tēnei momo taputapu i roto i ngā mahi whaihua. Kua whakakapia e te whakakaha muka whatu. Kei te pikitia i raro nei te mātāpono mahi o te whakakaha muka whatu. Ka taea e ia te whakanui tika i te tohu whatu me te kore e haere i roto i te tukanga whakawhiti whatu-hiko-whatu.
Me pēhea te mahi a te whakakaha muka?
Ina roa rawa te tawhiti tuku (neke atu i te 100 km), ka nui te ngaronga o te tohu whatu. I ngā wā o mua, i whakamahia e te tangata ngā pūwhakahoki whatu hei whakanui i te tohu whatu. He iti noa ngā herenga o tēnei momo taputapu i roto i ngā mahi whaihua. Kua whakakapia e te whakakaha muka whatu. Kei te pikitia i raro nei te mātāpono mahi o te whakakaha muka whatu. Ka taea e ia te whakanui tika i te tohu whatu me te kore e haere i roto i te tukanga whakawhiti whatu-hiko-whatu.
He aha ngā momo whakakaha muka kei reira?
1. Whakakaha muka kua tāpirihia ki te erbium (EDFA)
Ko te whakakaha muka erbium-whakauru (EDFA) he mea hanga nui mai i te muka erbium-whakauru, te pūtake mārama papu, te hononga whatu, te wehewehe whatu, me te tātari whatu. I roto i ēnei, ko te muka erbium-whakauru he wāhanga nui o te whakakaha tohu whatu, e whakamahia ana hei whakatutuki i te whakakaha tohu whatu roopu 1550 nm, nō reira, ko te whakakaha muka erbium-whakauru (EDFA) he pai te mahi i roto i te awhe roanga ngaru o te 1530 nm ki te 1565 nm.
Apainga:
Te whakamahinga mana papu teitei rawa atu (neke atu i te 50%)
Ka taea e ia te whakanui tika me te whakanui i te tohu whatu i roto i te roopu 1550 nm.
Te whakanui ake i te 50 dB
He iti te haruru i te tuku tawhiti
ngoikoretanga
He nui ake te whakakaha muka i pania ki te erbium (EDFA)
Kāore e taea e tēnei taputapu te mahi tahi me ētahi atu taputapu haurua-ira
2. Whakakaha Raman
Ko te whakakaha Raman anake te taputapu ka taea te whakanui i ngā tohu whatu i roto i te awhe 1292 nm~1660 nm. Ko tōna kaupapa mahi e hangai ana ki te pānga marara Raman whakaohooho i roto i te muka quartz. E whakaatuhia ana i te pikitia i raro nei, ina toia te rama papu. Ina tukuna te tohu rama ngoikore i roto i te whānui o te Mann gain me te ngaru rama papu kaha i roto i te muka whatu i te wā kotahi, ka whakanuia te tohu rama ngoikore nā te pānga marara Raman.
Apainga:
He whānuitanga o ngā roopu e tika ana
Ka taea te whakamahi i roto i ngā tono taura muka aratau-kotahi kua tāutahia
Ka taea te tāpiri atu ki ngā ngoikoretanga o te whakakaha muka erbium-doped (EDFA)
He iti te whakamahinga hiko, he iti te whakawhitiwhiti kōrero
ngoikoretanga:
Te kaha papu teitei
Pūnaha whakahaere whiwhinga uaua
Haruru
3. Whakakaha muka whatu haurua-arataki (SOA)
Ka whakamahia e ngā whakakaha muka whatu haurua-arataki (SOA) ngā rauemi haurua-arataki hei pāpāho whakanui, ā, he paninga ārai-whakaata kei roto i ō rātou tāuru me ō rātou tāuru tohu whakaputa hei ārai i te whakaata i te mata pito o te whakakaha me te whakakore i te pānga o te resonator.
Apainga:
iti te rahinga
Mana putanga iti
He iti te whānui o te whiwhinga, engari ka taea te whakamahi i roto i ngā momo roopu rerekē
He iti ake te utu i te whakakaha muka erbium-doped (EDFA) ā, ka taea te whakamahi me ngā taputapu semiconductor.
E whā ngā mahi kore-raina o te whakarerekētanga whakawhiti-whiwhi, te whakarerekētanga whakawhiti-wāhanga, te tahuritanga roangaru me te whakaranu ngaru-whā ka taea te whakatutuki.
ngoikoretanga:
Kāore te mahi i te teitei rite ki te whakakaha muka erbium-doped (EDFA)
He nui te haruru me te iti o te pikinga
Wā tuku: Hepetema-17-2021