Ko ngā mea houte whakarerekētanga hiko-whatu ōwehenga tino-teitei
He pai ngā painga o ngā whakarerekētanga hiko-whatu i runga i te maramara (he mea hanga ki te silicon, he triquinoid, he lithium niobate kiriata angiangi, me ētahi atu) arā, he kiato, he tere teitei, he iti hoki te whakamahinga hiko, engari he nui tonu ngā wero hei whakatutuki i te whakarerekētanga kaha hihiri me te ōwehenga tino teitei o te mate. Nō nā tata nei, kua angitu nui ngā kairangahau i tētahi Pokapū Rangahau Tahi mō te Pūrongo Muka Whatu i tētahi whare wānanga Haina i roto i te mara o ngā whakarerekētanga hiko-whatu ōwehenga tino teitei o te mate i runga i ngā papa silicon. I runga i te hanganga tātari whatu ota teitei, ko te silicon i runga i te maramarakaiwhakarerekē hiko-whatume te ōwehenga mate tae atu ki te 68 dB ka tutukihia mō te wā tuatahi. Ko te rahi me te whakapaunga mana e rua ngā whakarāpopototanga iti iho i te mea tuku ihoKaiwhakarerekētanga AOM, ā, ka manatokohia te whaihua o te whakamahinga o te taputapu i roto i te pūnaha DAS taiwhanga.
Pikitia 1 Te hoahoa kauwhata o te taputapu whakamātautau mō te ultrate whakarerekētanga hiko-whatu ōwehenga mate teitei
Ko te mea e hangai ana ki te siliconkaiwhakarerekē hiko-whatuHe rite te hanganga o te tātari mowhiti moroiti hono ki te tātari hiko tawhito. Mā te hononga raupapa o ngā resonators mowhiti moroiti e whā e hangai ana ki te silicon, ka tutuki i te modulator electro-whatu te tātari papatahi me te ōwehenga whakakorenga teitei i waho o te roopu (>60 dB) mā te hononga raupapa o ngā resonators mowhiti moroiti e whā e hangai ana ki te silicon. Mā te āwhina o te Pin-type electro-optical phase shifter i roto i ia mowhiti moroiti, ka taea te whakarerekē nui i te whānuitanga tuku o te modulator i te ngaohiko iti (<1.5 V). Mā te ōwehenga whakakorenga teitei i waho o te roopu me te āhuatanga hurihuri-iho tātari pari ka taea te whakarerekē i te kaha o te mārama whakauru e tata ana ki te roangaru resonant me te rerekētanga nui rawa atu, he mea tino pai ki te whakaputa i ngā pāoro mārama ōwehenga whakakorenga tino teitei.
Hei manatoko i te kaha whakarerekētanga o te pūwhakarerekētanga hiko-whatu, i whakaaturia tuatahitia e te tīma te rerekētanga o te tuku o te taputapu me te ngaohiko DC i te roangaru whakahaere. Ka kitea i muri i te 1 V, ka heke tere te tuku neke atu i te 60 dB. Nā te herenga o ngā tikanga tirotiro oscilloscope tuku iho, ka whakamahia e te tīma rangahau te tikanga ine i te pokanoa whaiaro-heterodyne, ā, ka whakamahia te whānuitanga hihiri nui o te ine hiko hei whakaahua i te ōwehenga whakamomori hihiri tino teitei o te pūwhakarerekētanga i te wā o te whakarerekētanga pao. E whakaatu ana ngā hua whakamātautau he ōwehenga whakamomori te pao mārama putanga o te pūwhakarerekētanga tae atu ki te 68 dB, ā, ko te ōwehenga whakamomori neke atu i te 65 dB tata ki ētahi tūranga roangaru resonant. Whai muri i te tatau taipitopito, ko te ngaohiko taraiwa RF tuturu i utaina ki te irahiko he tata ki te 1 V, ā, ko te whakamahinga mana whakarerekētanga he 3.6 mW noa iho, he rua ngā whakarāpopototanga iti iho i te whakamahinga mana pūwhakarerekētanga AOM tuku iho.
Ka taea te whakamahi i te modulator hiko-whatu e hangai ana ki te Silicon i roto i te pūnaha DAS ki tētahi pūnaha DAS kimi tika mā te tākai i te modulator kei runga i te maramara. He rerekē i te interferometry heterodyne tohu-rohe whānui, ka whakamahia te aratau demodulation o te interferometry Michelson kore-taurite i roto i tēnei pūnaha, kia kore ai e hiahiatia te pānga nekehanga auau whatu o te modulator. Ka whakahokia angitu ngā huringa āhuahanga i puta mai i ngā tohu wiri sinusoidal mā te demodulation o ngā tohu marara Rayleigh o ngā hongere e 3 mā te whakamahi i te rauropi demodulation IQ tikanga. E whakaatu ana ngā hua ko te SNR he tata ki te 56 dB. Ka tirotirohia anō te tohatoha o te kiato spectral mana i te roanga katoa o te muka pūoko i roto i te whānuitanga o te auau tohu ±100 Hz. Haunga te tohu nui i te tūranga wiri me te auau, ka kitea he urupare kiato spectral mana i ētahi atu wāhi ā-wāhi. Ko te haruru crosstalk i roto i te whānuitanga o te ±10 Hz me waho o te tūranga wiri ka toharitehia i te roanga o te muka, ā, ko te SNR toharite i te wāhi kāore i raro iho i te 33 dB.
Pikitia 2
he hoahoa kauwhata o te pūnaha pūoko oro tohatoha muka whatu.
b Te mātotorutanga o te mana tohu kua whakakorehia.
c, d ngā auau wiri e tata ana ki te tohatoha kiato hiato mana i te taha o te muka pūoko.
Ko tēnei rangahau te tuatahi ki te whakatutuki i tētahi whakarerekētanga hiko-whatu i runga i te silicon me te ōwehenga tino tiketike (68 dB), ā, i whakamahia angitu ki ngā pūnaha DAS, ā, he tino tata te pānga o te whakamahi i te whakarerekētanga AOM arumoni, ā, ko te rahi me te whakamahinga hiko e rua ngā whakarāpopototanga iti iho i te mea whakamutunga, e whakaarohia ana ka whai wāhi nui ki te whakatupuranga e whai ake nei o ngā pūnaha pūoko muka tohatoha iti-mana. Hei tāpiri, ko te tukanga hanga nui-rahi CMOS me te kaha whakauru-i-runga-maramara o te silicon-basedngā taputapu optoelectronicka taea te whakatairanga nui i te whanaketanga o tētahi whakatupuranga hou o ngā kōwae whakauru kotahi-taputapu maha-pūrere, he iti te utu, e hangai ana ki ngā pūnaha pūoko muka tohatoha i runga i te maramara.
Wā tuku: Maehe-18-2025