Kuchinja-chinja kwemanzwiro epfungwa (bipolar)modulator yechikamu
Munyaya yekukurukurirana kwemagetsi nekukurumidza uye tekinoroji yequantum, ma modulators echinyakare ari kutarisana nematambudziko makuru ekushanda! Kusakwana kwekuchena kwemasaini, kudzora kwechikamu kusingachinjiki, uye kushandiswa kwesimba rakawanda kwazvo - matambudziko aya ari kukanganisa kufambira mberi kwetekinoroji.
Bipolarmodulator yechikamu chemagetsi-opticalinogona kuita kuti zviratidzo zve optical signals zvirambe zvichichinja-chinja zvine matanho maviri. Iine kubatanidzwa kwakanyanya, kurasikirwa kwakaderera, bandwidth ye modulation yakakwira, voltage yakaderera yehafu yemafungu, uye simba re optical rakanyanya kukuvara. Inonyanya kushandiswa kudzora optical chirp mumasisitimu ekukurukurirana e high-speed optical uye kugadzira mamiriro akavharika mumasisitimu e quantum key distribution. Kugadzirwa kwema sideband mumasisitimu eROF uye kuderedzwa kwe stimulated Brillouin scattering (SBS) mumasisitimu ekutaurirana e analog optical fiber, pakati pezvimwe zvinhu.
Iyomodulator yechikamu chepfungwa chepfungwainokwanisa kudzora zvakananga chikamu chezviratidzo zve optical kuburikidza ne two-stage continuous phase modulation, uye inonyanya kuratidza kukosha kwakasiyana mukukurukurirana kwe optical nekukurumidza uye kugoverwa kwe quantum key.
1. Kubatanidzwa kwakanyanya uye muganhu wekukuvadzwa kwakanyanya: Inoshandisa dhizaini yakabatana ye monolithic, yakakura zvishoma, uye inotsigira simba re optical rakakuvadzwa zvakanyanya. Inogona kuenderana zvakananga nemagetsi ane simba guru uye yakakodzera kugadzirwa kwakanaka kwe millimeter-wave sidebands muma ROF (Optical Wireless) systems.
2. Kudzvinyirira Chirp uye manejimendi yeSBS: Mukutumira kwakabatana nekukurumidza, kurongeka kwemodulation yechikamuinogona kudzvinyirira zvinobudirira kurira kwemasaini e optical. Mukutaurirana kwe analog optical fiber, nekuvandudza kudzika kwe phase modulation, mhedzisiro ye stimulated Brillouin scattering (SBS) inogona kuderedzwa zvakanyanya, nokudaro ichiwedzera daro rekutumira.
Mukugoverwa kwemakiyi equantum (QKD), mamiriro ekupindirana kwemapairi ephoton anoshanda se "quantum key" yekutaurirana kwakachengeteka - kururama kwekugadzirwa kwayo kunosarudza zvakananga hunhu hwekiyi isingateereri. "Kuchinjika" kwe "bipolar phase modulator" kunoratidzwa mukukwanisa kwayo kugadzirisa maparamita ephase kuti agadzirise kukanganiswa kwezvakatipoteredza kwezvinobatanidza zvakasiyana zve optical fiber (senge shanduko dzekupisa uye kutenderera kwechikamu kunokonzerwa nekumanikidzwa kwemuchina), kuve nechokwadi chekuti mapairi ephoton akapindirana anobudirira zvakanyanya. "Kugadzikana" uku kunowanikwa kuburikidza nekudzora tembiricha chaiyo uye tekinoroji ye "phase-locking frequency", iyo inodzvinyirira ruzha rwechikamu pasi pemuganho weruzha rwequantum uye inodzivirira kusagadzikana kwemamiriro equantum panguva yekutumira. Hunhu uhwu huviri hwe "kuchinjika + kugadzikana" hahungowedzere chete mwero wekupararira kwenzvimbo pfupi mumanetwork enzvimbo yemaguta (senge bit error rate iri pasi pe1% mukati memakiromita makumi mashanu), asiwo hunotsigira kusimba kwemakiyi mukutumira kure munetwork dzepakati pemaguta (senge makiromita anopfuura zana mumaguta), ichiva chinhu chikuru chekuvaka network yekutaurirana yequantum "yakachengeteka chose".
Nguva yekutumira: Chikunguru-22-2025