Laser socreic fasaha donfiber na ganiJe
Epticicarwar Fayil na Fiber Jensing Fasaha wani nau'in fasaha na jin daɗin fasahar fiber na fiber na fiber, kuma ya zama ɗayan manyan rassan Fasaha na Fasaha. Tsarin fiber na fiberical shine yafi haɗa laser, fiber mai watsa haske, sanadin yanki ko yanki da sauran sassan. Sigogi suna bayyana halayen kalaman hasken wuta sun hada da tayin, tashin hankali, lokaci, jiha, jihar Polarization na iya canzawa ta hanyar watsawa na waje a cikin watsawa na fiber. Misali, lokacin da zazzabi, iri, matsi, matsakaici, rawar jiki, juyawa, juyawa da ƙimar sinadarai, waɗannan sigogi suna canzawa daidai. Eptical fiber jita ya dogara da alakar da ke tsakanin waɗannan sigogin da abubuwan waje don gano adadin daidai da daidai.
Akwai nau'ikan abubuwa da yawaLaser sourceamfani a cikin file fiber na fificon tsarin, wanda za'a iya raba shi zuwa rukuni biyu: mai yiwuwatushen Laserda kuma rashin tushe mai tushe, rashin daidaituwatusheMafi yawan sun haɗa da hasken wutar lantarki da kuma launuka masu haske-bayyanannun sun haɗa da daskararrun lauers, Lashers Gas,Lasiconctors LaserdaFiber Laser. Mai zuwa yanzu ne gatushen laserAmfani da shi a fagen fiber Jening a cikin 'yan shekarun nan: kunkuntar layin nisa-mitar Laser, cugthlengthengthengthengthength.
1.1 Bukatun don kunkuntar layintushen laser haske
Ba za a iya raba tsarin Laser na Eptical ba, kamar yadda aka auna matattarar mai alama, tushen ganowa, hayaniyar lokaci, da halaye da halaye na Fayil, kamar halaye da halaye na Fiber na wasa suna taka rawa mai yanke hukunci. A cikin 'yan shekarun nan, tare da ci gaba na ƙudurin-distic na ƙuduri na fifita fiber na ficewa don yin bincike mai zurfi na layin baya, tare da manyan mita (dubban mita). Amfanin babban ƙuduri (ƙudurin matakin ƙiyayya) da kuma hankali (har zuwa -100 DBM) sun zama ɗaya daga cikin fasahar aikace-aikace tare da rarraba sararin samaniya da kuma fasahar Sens. Core na fasahar Core don amfani da tushen hasken wuta don samun madaidaicin madaidaicin sauti, don haka aikin Laser so ya ƙayyade abubuwan da abubuwan da aka gano Laser kamar kewayon kewayon bayani, hankali da ƙuduri. Lokacin da nisan tunani ya kusa da tsayin gyarawa, tsananin siginar zai zama m fallasa ta hanyar coopecept τ / τc. Don hasken wuta na Gaussian tare da sifa mai fitowa, don tabbatar da cewa tsarin doke yana da mafi kyawun yanki na 80 kilogiram ~ 0.04vg / wanda ya nuna cewa tsarin ya sami nasara da tsawon 80 kilogiram ~ 0.04vg / wanda yakai shi ne na fiber 80 kilogiram Bugu da kari, ci gaban sauran aikace-aikace suma suna gabatar da bukatun da suka dace da layin hasken. Misali, a cikin tsarin firam na gani, layin da hasken wuta ya kayyade tsarin hayaniya kuma yana ƙayyade mafi ƙarancin alamar siginar. A cikin farin ciki mai haske Dandalin Domain maimaitawa (Botdr), ƙudurin ma'aunin zazzabi da damuwa ya ƙaddara shi ta layin hasken. A cikin jerin fiber mai zurfi na gyiko, ana iya amfani da tsinkayen hasken haske ta hanyar rage girman tushen, da kuma tabbatar da madaidaicin daidaiton fiber na fiber.
1.2 Bukatun don Haske Laser
Waƙoƙi guda ɗaya na laser yana da sauye sauyewar tafiye-tafiye, zai iya maye gurbin ƙayyadadden kayan aiki da yawa, rage wani ɓangare na tsarin gini na fiber na fiber. Misali, a cikin Trace Gasear Gasen Listing, nau'ikan gas suna da kogunan gas masu sha daban-daban. Don tabbatar da ingancin ɗaukar hasken hasken hasken ya isa kuma ya sami babban abin da ya fi dacewa, ya zama dole don daidaita yanayin hasken wutar lantarki tare da ƙirar isar da tushen gas. Irin nau'in gas da za a iya gano shi da gaske ne ta hanyar fadada hanyar hasken wutar lantarki. Saboda haka, kunkuntar latsers tare da ingantaccen Balaguro na yin aiki suna da sassauƙa mafi girma a cikin irin waɗannan tsarin jinsi. Misali, tsarin da aka rarraba jerin gwano na goge-goge dangane da hangen nesa na Fita, ana buƙatar siginar gani da sauri don kaiwa sosai a cikin PM / μs. Bugu da kari, kunkuntar kunaduntar lastwidth Larer, za a iya amfani da laser mai nisa da bincike mai zurfi da kuma wasu filayen na hankali. Don biyan bukatun mahimman ayyukan na acikin na sake fasalin bandwidth, da sauri saurin kunnawa a cikin 'yan fiber-laster ultingtth, da matsanancin amo, da fitowar tsayayye mita da iko.
1.3 Buƙatar neman farin layin laser
A cikin filin abin da ya dace na gani, kyakkyawan farin laser yana da matukar muhimmanci don inganta aikin. The yada bakar Spectrum na farin Layer, da mafi yawan aikace-aikacen sa a cikin tsarin fific na gani. Misali, lokacin amfani da fiber bribagg grating (fbg) don gina hanyar sadarwar firstor, ana iya amfani da hanyar bincike ko kuma ana iya amfani da hanyar da aka tace don remodulation. Tsohon yayi amfani da Spectrometer don gwada kowane fbg resonant saukarwa a cikin hanyar sadarwa. Latterarshen yana amfani da matattarar tunani don waƙa da ɗimbin fbg a cikin abin da ke cikin sa, duka biyun suna buƙatar tushen watsa labarai azaman tushen hasken gwaji ga FBG. Domin kowane fbg hanyar sadarwa zai sami wasu asarar iskar, kuma tana da bandwidth na fiye da 0.1 nm, raguwar sau ɗaya na fbg da babban iko da babban iko da babban Power da babban Power da Babban Bandwidth. Misali, lokacin da amfani da dogon lokaci fiber grating (LPFG) don maganin shaye-shaye yana buƙatar bandwidth guda 10 na NM yana buƙatar bandwidth guda 10 da in-da-bakan da ba tare da haske ba don ingancin bayyanar halaye. Musamman, fiber fix na acoused (AIFG) gina ta amfani da acousto-optica tasiri na iya cimma wani rakodin igiyar ruwa har zuwa 1000 nm ta hanyar kumburin lantarki. Saboda haka, gwajin karkatar da hankali tare da irin wannan kewayon kewayon raya yana haifar da babban kalubale ga fannoni na bandwidth mai haske. Hakanan, a cikin 'yan shekarun nan, an yi amfani da fakin zaren Fib na fiber grating shi ma an yi amfani dashi sosai a fagen fiber ji. Saboda yawan halayen sa na asararsa da yawa, kewayon rarraba rarraba na iya kaiwa 40 nm. Hanyar Sensing shine yawanci don kwatanta mahimman motsi tsakanin kololuwar watsa hankali, saboda haka wajibi ne don auna bakan gizo-lokaci gaba ɗaya. Bandwidth da iko na fadada tushen haske ana buƙatar su fi girma.
2. Halin bincike a gida da kasashen waje
2.1 kunkuntar layin lasisidth
2.1.1 kunkuntar layin da aka rarraba adireshin Laser
A shekara ta 2006, alamomi et al. Rage ma'aunin MHZ na SemiconductorDFB Laser(Rarraba bayanan Laser) zuwa KHZ sikelin ta amfani da hanyar lantarki; A shekara ta 2011, Kesler et al. Anyi amfani da ƙarancin zafin jiki da babban kwanciyar hankali na Crystal Guda tare da sarrafawa mai amfani don samun fitarwa mai ɗorewa 40 mhz; A shekara ta 2013, peng et al ya sami wani fitarwa Laseronduch samar da semicyputhputputh of 15 khz ta amfani da hanyar Fassarar waje (FP) gyara Feedback. Hanyar wutar lantarki wacce take amfani da ita ta hanyar samar da ƙwaƙwalwar ƙwaƙwalwar-Uight-Hall Predcack ta tabbatar da Laser-of Laserwidth na hasken wutar. A shekara ta 2010, Bernhardi et al. An samar da 1 cm na usbium-doped alumina fbg a kan silicon oxide opide substrate don samun fitarwa mai laser tare da layi daya game da 1.7 khz. A wannan shekarar, Liang et al. Yayi amfani da bayanan rashin son kai na baya Rayleight wanda aka nuna ta hanyar High-Q ECOGE Resonator DeMyiconductor don sembenduction Lam 1, kuma a karshe ya sami kunkuntar fitowar mai 160 na HZ.
Hoto 1 (a) zane na matsakaiciyar lissafin Lasiconducth na Semiconductth matsawa dangane da Rayleigh na ƙididdigar hanyar Rahamar Hayon na waje;
(b) Mitar bashin kyauta na hiseronductor Laseronductorctors tare da layinwidth na 8 mhz;
(C) Mitar mai amfani da laser tare da layi-layi zuwa 160 hz
2.1.2 kunkuntar Linewidth Fiber Laser
Don linear Cliren Fiber Laser, kunkuntar Laserwidth Lasery of Datewidth Lywip na yanayin da ake samu ta hanyar rage tsawon lokacin da ya tsayar da tazara. A cikin 2004, Spiegelberg et al. Samu wani yanayi mai tsayi guda ɗaya na layi ɗaya na Laser Laser na Laser na laserwidth na 2 KHZ ta amfani da hanyar Dr dr takaice. A shekara ta 2007, Shen et al. Anyi amfani da shi a kan erbium mai nauyi-doped ficonber don rubuta fbg a kan BI-GO-GE-DOPEW PHOBIYAR CIGABA, YADDA YAKE KYAUTA LAFARIN FIRINDER ƙasa da 1 khz. A shekara ta 2010, yang et al. Amfani da wani 2cm sosai dogara gajere dodel hade tare da wani yadudduka fbg tace don samun yanayi mai tsayi na Laser guda ɗaya tare da layi ɗaya na ƙasa da 2 khz. A cikin 2014, ƙungiyar ta yi amfani da ɗan gajeren katangar (mai ɗaukar hoto sau biyu) a haɗe tare da faɗin layin, kamar yadda aka nuna a cikin Hoto na 3. A cikin 2012, CAI et al. A yi amfani da tsarin ƙasa na 1.4cm don samun fitarwa na Laser tare da fitarwa na MW mafi girma mafi girma 114 mw, wani yanki na tsakiya na 1540.3 nisa na 4.1 khz. A shekarar 2013, meng et al. Amfani da birgewa na fitar da fiber na erbium tare da gajeriyar hanyar mai amfani da keɓaɓɓun na'urar don samun madaidaicin madaidaicin fitarwa na 10 mw. A cikin 2015, ƙungiyar ta yi amfani da rami mai amfani da zobe ta haɗa da zaren erbium-droped fiber kamar yadda blourin watsa samun ci gaba don samun ƙananan ƙofar Lacerwidth Lostwidth Laser.
Hoto 2 (a) zane zane na zane na Fiber Fiber Fiber Fiber;
(b) Linesehain na Linese Alamar Heteryne tare da 97.6 Km Fitir Firber
Lokaci: Nuwamba-20-2023