Biyu na asali Concepts na Laser, daya ne a kara kuzari watsi, da sauran shi ne resonator. A cikin wannan takarda, an gabatar da ainihin ƙa'idar DBR (Rarraba Bragg Reflector), wanda shine resonator a cikin nau'in laser na VCSEL. Ilimin kimiyyar lissafi guda biyu na asali: canjin lokaci na tunani da tsoma bakin fim an gabatar da su bi da bi.
Matsayin DBR a cikin VCSEL Laser ana nuna shi a ƙasa:
Canjin lokaci na tunani
Lokacin da aka watsar da haske daga matsakaicin matsakaita na gani n1 zuwa matsakaicin matsakaicin na gani mai ƙarfi n2 (maƙasudin refractive n2>n1), hasken da ke haskakawa zai fuskanci canjin lokaci na digiri 180 a wurin dubawa. Duk da haka, babu wani canji na lokaci yana faruwa lokacin da aka watsa matsakaicin hoto zuwa matsakaicin photophobic.
Daga mahangar aikin injiniya, haske kuma igiyar wuta ce ta lantarki, kuma nunin haske na iya zama kwatankwacin yadda siginar lantarki ya canza lokacin da abin ya faru. Lokacin da siginar lantarki ya shiga layin watsawa mai ƙarancin ƙarfi daga layin watsawa mai ƙarfi, yana haifar da tunani mara kyau (misali lokaci na digiri na 180), kuma lokacin da ya shiga layin watsawa mai ƙarfi daga layin watsawa mara ƙarfi. , yana samar da kyakkyawan tunani na lokaci (babu canjin lokaci). Ma'auni mai jujjuyawa na matsakaicin watsawa na gani yana kwatankwacinsa da rashin ƙarfi na watsa siginar lantarki.
Bayani mai zurfi ya wuce iyakar wannan labarin.
Tsangwama na fim din
Lokacin da haske ya wuce ta cikin fim na bakin ciki, za a nuna shi sau biyu a kan saman sama da ƙasa, kuma kauri na bakin ciki zai shafi bambancin hanya na gani na tunani biyu. Idan an sarrafa kauri na bakin ciki na fim don zama (1/4 + N) sau da tsayin raƙuman ruwa, bambancin hanyar gani na tunani biyu shine (1/2 + 2N), kuma bambancin hanya na gani ya dace da digiri na 180. sauye-sauyen lokaci, kuma ɗaya daga cikin abubuwan da za a yi tunani za a yi jujjuyawar lokaci na digiri 180. Sa'an nan hasken da aka haskaka na lokuta biyu ya kasance a ƙarshe a cikin lokaci, kuma an inganta girman matsayi, wato, ana ƙara yawan tunani gabaɗaya. A haƙiƙa, DBR shine madaidaicin Layer na kafofin watsa labarai masu ratsawa guda biyu. Lokacin da haske ya ratsa ta cikin DBR, kowane Layer zai ƙara wani tsarin tunani, kuma ma'aunin tunani na DBR zai iya kaiwa matsayi mai girma.
Tsarin tsarin tsoma baki na fim:
Lura 1: Domin a nuna a sarari, ana zana ƙullun haske guda uku daban-daban, amma a zahiri an tattara su tare;
Hoto 2: Tunani na farko na shuɗi (mijin digiri na 180) da na biyu yana nuna haske na rawaya (bambancin lokaci na digiri na 180 saboda bambancin hanyar gani) a ƙarshe a cikin lokaci, kuma an inganta girman matsayi.
Tsarin DBR na iya haɓaka tunani ta hanyoyi da yawa na tunani. Duk da haka, DBR yana aiki ta amfani da ka'idar tsangwama, don haka DBR zai sami babban haske don wasu takamaiman kewayon haske, kuma zai iya cimma ƙarancin hasara, da sauran nau'ikan masu haskakawa (kamar filayen ƙarfe) sun bambanta a cikin halayen tunani.
Abin da ke sama shineHDV Pholantarki Technology Ltd. don kawo abokan ciniki game da "biyu asali Concepts na Laser" gabatarwa labarin, kuma mu kamfanin ne na musamman samar da Tantancewar cibiyar sadarwa masana'antun, da kayayyakin da hannu ne ONU jerin (OLT ONU/AC ONU/CATV ONU/GPON ONU/XPON). ONU), Optical module series (Toptical fiber module / Ethernet Tantancewar fiber module / SFP Tantancewar module), OLT jerin (OLT kayan aiki / OLT sauya / Tantancewar cat OLT), da dai sauransu, akwai daban-daban bayani dalla-dalla na sadarwa kayayyakin ga bukatun daban-daban. al'amuran don tallafin hanyar sadarwa, maraba don tuntuɓar.