Ci gaba da matsayin kasuwa na laser mai iya gyarawa Kashi na biyu

Ci gaba da matsayin kasuwa na laser mai iya canzawa (Kashi na biyu)

Ka'idar aiki nalaser mai iya canzawa

Akwai ƙa'idodi kusan guda uku don cimma daidaitaccen tsayin laser.lasers masu iya canzawaYi amfani da abubuwan aiki tare da layuka masu faɗi masu haske. Masu amsawa da ke samar da laser suna da ƙarancin asara kawai a kan iyakar tsayi mai faɗi. Saboda haka, na farko shine canza tsawon tsayin laser ta hanyar canza tsawon tsayin da ya dace da yankin ƙarancin asara na resonator ta wasu abubuwa (kamar grating). Na biyu shine canza matakin kuzari na canjin laser ta hanyar canza wasu sigogi na waje (kamar filin maganadisu, zafin jiki, da sauransu). Na uku shine amfani da tasirin da ba layi ba don cimma canjin tsayi da daidaitawa (duba na'urorin gani marasa layi, watsawar Raman mai motsawa, ninka mitar gani, oscillation na parametric optical). Nau'ikan laser na yau da kullun waɗanda ke cikin yanayin daidaitawa na farko sune lasers na rini, lasers na chrysoberyl, lasers na tsakiya mai launi, lasers na iskar gas mai matsin lamba mai gyarawa da lasers na excimer mai gyarawa.

Daga mahangar fasahar fahimta, an raba laser mai gyara zuwa: fasahar sarrafa halin yanzu, fasahar sarrafa zafin jiki da fasahar sarrafa inji.
Daga cikinsu, fasahar sarrafa lantarki ita ce cimma daidaiton tsawon tsayi ta hanyar canza yanayin allurar, tare da saurin daidaitawar matakin NS, faɗin bandwidth na daidaitawa, amma ƙaramin ƙarfin fitarwa, bisa ga fasahar sarrafa lantarki galibi SG-DBR (sampling grating DBR) da laser GCSR (ƙarin haɗin kai na jagora na juyawa-samfuran samfuri). Fasahar sarrafa zafin jiki tana canza tsawon fitowar laser ta hanyar canza ma'aunin refractive na yankin aiki na laser. Fasahar tana da sauƙi, amma a hankali, kuma ana iya daidaita ta da faɗin kunkuntar band na 'yan nm kawai. Manyan waɗanda suka dogara da fasahar sarrafa zafin jiki suneLaser DFB(ra'ayoyin da aka rarraba) da kuma DBR laser (Rarraba Bragg reflection). Ikon injiniya ya dogara ne akan fasahar MEMS (micro-electro-mechanical system) don kammala zaɓin tsawon rai, tare da babban bandwidth mai daidaitawa, ƙarfin fitarwa mai yawa. Babban tsarin da ya dogara da fasahar sarrafa injiniya sune DFB (ra'ayoyin da aka rarraba), ECL (laser na ramin waje) da VCSEL (laser mai fitar da saman ramin tsaye). An yi bayani mai zuwa daga waɗannan fannoni na ƙa'idar lasers masu iya gyarawa.

Aikace-aikacen sadarwa ta gani

Laser mai gyarawa babban na'urar lantarki ce a cikin sabuwar ƙarni na tsarin rarrabawa mai yawa na tsawon rai da musayar photon a cikin hanyar sadarwa ta gani-gani. Aikace-aikacen sa yana ƙara ƙarfin aiki, sassauci da haɓaka tsarin watsa fiber na gani, kuma ya sami ci gaba ko daidaitawa mai ci gaba a cikin kewayon tsayi mai faɗi.
Kamfanoni da cibiyoyin bincike a faɗin duniya suna ci gaba da haɓaka bincike da haɓaka na'urorin laser masu iya gyarawa, kuma ana ci gaba da samun sabon ci gaba a wannan fanni. Ana ci gaba da inganta aikin na'urorin laser masu iya gyarawa kuma farashin yana raguwa koyaushe. A halin yanzu, galibi ana raba na'urorin laser masu iya gyarawa zuwa rukuni biyu: na'urorin laser masu iya gyarawa na semiconductor da na'urorin fiber masu iya gyarawa.
Laser na Semiconductormuhimmin tushen haske ne a cikin tsarin sadarwa na gani, wanda ke da halaye na ƙaramin girma, nauyi mai sauƙi, ingantaccen juyawa mai yawa, tanadin wuta, da sauransu, kuma yana da sauƙin cimma haɗin kai na optoelectronic guda ɗaya tare da wasu na'urori. Ana iya raba shi zuwa laser mai rarrabawa mai sauyawa, laser madubi na Bragg mai rarrabawa, tsarin micromotor mai tsaye wanda ke fitar da laser da laser semiconductor na waje.
Ci gaban laser ɗin fiber mai canzawa a matsayin hanyar samun riba da kuma haɓaka diode na semiconductor laser a matsayin tushen famfo ya haɓaka ci gaban laser ɗin fiber sosai. Laser ɗin mai sauyawa ya dogara ne akan bandwidth na 80nm na fiber ɗin da aka yi amfani da shi, kuma ana ƙara sinadarin tacewa zuwa madauki don sarrafa tsawon lasing da kuma daidaita tsawon wavelength.
Ci gaban laser mai iya canzawa yana da matuƙar tasiri a duniya, kuma ci gaban yana da sauri sosai. Yayin da laser mai iya canzawa ke kusantar lasers masu tsayin tsayi dangane da farashi da aiki, ba makawa za a yi amfani da su sosai a tsarin sadarwa kuma suna taka muhimmiyar rawa a cikin hanyoyin sadarwa na gaba.

Manufar ci gaba
Akwai nau'ikan lasers da ake iya gyarawa, waɗanda galibi ana haɓaka su ta hanyar ƙara gabatar da hanyoyin daidaita tsayi bisa ga nau'ikan lasers masu tsawon zango ɗaya, kuma an samar da wasu kayayyaki ga kasuwa a duk duniya. Baya ga haɓaka lasers masu ci gaba da gyarawa, an kuma bayar da rahoton lasers masu gyarawa tare da wasu ayyuka masu haɗawa, kamar laser mai gyarawa wanda aka haɗa tare da guntu ɗaya na VCSEL da modulator mai ɗaukar wutar lantarki, da kuma laser ɗin da aka haɗa tare da samfurin Bragg reflector da kuma semiconductor optical amplifier da kuma modulator mai ɗaukar wutar lantarki.
Saboda ana amfani da laser mai canza tsayi sosai, ana iya amfani da laser mai canza tsayi na siffofi daban-daban ga tsarin daban-daban, kuma kowannensu yana da fa'idodi da rashin amfani. Ana iya amfani da laser semiconductor na waje a matsayin tushen haske mai faɗi a cikin kayan aikin gwaji na daidaito saboda ƙarfin fitarwa mai yawa da kuma tsawon tsayi mai ci gaba. Daga mahangar haɗakar photon da haɗuwa da hanyar sadarwa ta gaba-gaba, samfurin grating DBR, grating mai tsari na DBR da lasers masu gyara waɗanda aka haɗa tare da modulators da amplifiers na iya zama tushen haske mai gyara ga Z.
Laser mai gyarawa na fiber grating tare da ramin waje shi ma wani nau'in haske ne mai kyau, wanda ke da tsari mai sauƙi, faɗin layi mai kunkuntar da kuma haɗin fiber mai sauƙi. Idan za a iya haɗa na'urar EA modulator a cikin ramin, ana iya amfani da shi azaman tushen soliton mai gani mai sauri. Bugu da ƙari, na'urorin laser na fiber masu gyarawa waɗanda aka gina bisa ga na'urorin laser na fiber sun sami ci gaba mai yawa a cikin 'yan shekarun nan. Ana iya tsammanin cewa aikin na'urorin laser masu gyarawa a cikin hanyoyin hasken sadarwa na gani zai ƙara inganta, kuma rabon kasuwa zai ƙaru a hankali, tare da yuwuwar amfani mai kyau.