Sabbin ci gaba a cikin mai daidaita LiNbO3

Sabbin ci gaba a cikinMai daidaita LiNbO3
Kwanan nan, masu bincike na kasar Sin sun fitar da wani babban kundin ƙirƙira kan fasahar kulle mitar laser ta PDH. Tsarin kulle mitar laser ta PDH wanda ya dogara da SOA (Semiconductor Optical Amplifier) ​​wanda ba layi ba don samar da madaurin gefe. Wannan kundin yana da nufin magance wasu muhimman abubuwan da ke haifar da matsala a tsarin kulle mitar laser ta PDH (Pound-Drever-Hall) na gargajiya saboda amfani da lithium niobate (LiNbO3 modulator) da sauran su.na'urar sarrafa na'urar lantarki (electro-optical modulator).
1. Manyan matsalolin maganin gargajiya sun haɗa da:
1.1 Tsari mai tsada da rikitarwa: Na'urorin lantarki na gargajiya suna buƙatar da'irori masu rikitarwa na tuƙi da kuma bias.
1.2 Jin daɗin muhalli: Mai saurin kamuwa da sauyin yanayi da damuwa, mai saurin kamuwa da rashin daidaituwar yanayin rarrabuwar kawuna.
1.3 Tasirin Saura na Tsarin Saura (RAM): Wannan yana haifar da karkatar da siginar kuskuren DC, wanda ke haifar da karkacewar wurin kulle laser kuma yana shafar kwanciyar hankali na tsarin na dogon lokaci.
2. Mafitar da ƙungiyar bincike ta gabatar ita ce:
Ka yi watsi da na'urar sarrafa hasken lantarki ta gargajiya gaba ɗaya sannan ka rungumi tsarin haɗin gwiwa naamplifier na gani na semiconductor(amplifier SOA) tare da masu canza mitar acousto-optic guda biyu. Ka'idar aiki ta musamman ita ce: Bayan raba laser iri, ana canza mitar ta daidai da masu canza mitar acousto-optic guda biyu, wanda ke haifar da bambancin mita, sannan a haɗa hanyoyin haske guda biyu a cikin amplifier SOA a cikin yanayin jikewar riba. Ta hanyar amfani da tasirin da ba na layi ba kamar haɗawar wave huɗu (FWM) naAmplifier SOA, ana samar da siginar gefe-gefe da ake buƙata don kulle mitar PDH yadda ya kamata.
3. Wannan fasaha tana kawo fa'idodi masu zuwa na aiki masu kawo cikas:
3.1 Cin Nasara Kan Matsalar RAM da kuma cimma daidaito mai girma na dogon lokaci: Na'urar amplifier SOA (yawanci a cikin fakitin malam buɗe ido) tana haɗa da sarrafa zafin jiki kuma ba ta da matuƙar damuwa ga matsalolin muhalli, tana guje wa matsalar RAM daga tsarin jiki da kuma cimma daidaiton kulle tsawon rami fiye da 5×10¹¹¹/rana.
3.2 Daidaita madaurin gefe, babban ci gaba a cikin rabon sigina zuwa hayaniya: Ta hanyar sarrafa adadin canjin madaurin mita biyu na acousto-optic (100 MHz - 200 MHz) kai tsaye ta hanyar oscillators guda biyu masu sarrafa wutar lantarki (VCO), tazara tazarar mita na madaurin gefe da aka samar za a iya daidaita ta daidai da kewayon spectral kyauta (FSR) na ramin tunani, ta haka yana inganta rabon sigina zuwa hayaniya na siginar kuskure sosai.
3.3 Rage farashi da inganta inganci, wanda ke taimakawa wajen rage tsarin aiki: Ba tare da tsadar na'urar lantarki mai amfani da wutar lantarki da kuma da'irori masu rikitarwa ba, na'urar ƙara ƙarfin hasken SOA tana buƙatar kawai sauƙin tuƙi na wutar lantarki, wanda ke sa tsarin gaba ɗaya ya fi ƙanƙanta, ƙarancin farashi, kuma ya fi dacewa da aikace-aikacen filin waje na laser mai inganci da kuma rage girmansa.
3.4 Faɗin fa'idodin aikace-aikace da buƙatun kasuwa na wannan fasaha sun haɗa da:
Agogon gani na sararin samaniya da abin hawa: Sifofinsa na hana tashin hankali sun cika buƙatun filayen jiragen sama da na ababen hawa marasa matuki.
Na'urorin auna nauyi na Quantum da na'urorin auna zafin jiki: Ana iya amfani da su don binciken ƙasa mai inganci da kuma kewayawa a ƙarƙashin ruwa.
Babban tsarin fiber sensing da kuma tsarin radar mai tsari mai tsari (LiDAR): Yana iya samar da kunkuntar layin layi, tushen haske mara juyawa.
A ƙarƙashin yanayin juyin juya halin kwantum na biyu na duniya da kuma rage yawan na'urorin firikwensin kwantum, buƙatar kasuwa don na'urorin laser masu sarrafa kansu, masu rahusa, da kuma tsayayyen mitar da aka daidaita ta hanyar mita sun ƙaru sosai, kuma wannan fasahar mallakar fasaha ta dace da wannan yanayin kasuwa.