Kukula ndi msika wa tunable laser Gawo lachiwiri

Kukula ndi msika wa laser tunable (Gawo 2)

Ntchito mfundo yalaser yokhazikika

Pali pafupifupi mfundo zitatu zopezera laser wavelength tuning. Ambirima lasers osavutagwiritsani ntchito zinthu zogwirira ntchito zokhala ndi mizere yayikulu ya fulorosenti. Ma resonator omwe amapanga laser amakhala ndi zotayika zochepa kwambiri pamtunda wopapatiza kwambiri. Choncho, choyamba ndikusintha kutalika kwa mawonekedwe a laser mwa kusintha kutalika kwa kutalika kofanana ndi dera lochepa la resonator ndi zinthu zina (monga grating). Chachiwiri ndikusuntha mphamvu ya kusintha kwa laser posintha magawo ena akunja (monga maginito, kutentha, etc.). Chachitatu ndikugwiritsa ntchito zotsatira zopanda malire kuti mukwaniritse kusintha kwa kutalika kwa mawonekedwe ndi kukonza (onani mawonekedwe osagwirizana ndi mawonekedwe, kulimbikitsa kufalikira kwa Raman, kuwirikiza kawiri kawiri, mawonekedwe a parametric oscillation). Ma lasers odziwika omwe ali m'njira yoyamba yosinthira ndi ma laser a utoto, ma chrysoberyl lasers, ma laser pakati pamitundu, ma lasers othamanga kwambiri komanso ma laser otuluka.

Laser tunable kuchokera kumalingaliro aukadaulo wozindikira amagawidwa kukhala: ukadaulo wamakono wowongolera, ukadaulo wowongolera kutentha ndiukadaulo wamakina.
Pakati pawo, ukadaulo wamagetsi amagetsi ndikukwaniritsa kusinthasintha kwa mawonekedwe mwa kusintha jekeseni wamakono, ndi liwiro la NS-level ikukonzekera, bandwidth yotalikirapo, koma mphamvu yaying'ono yotulutsa, kutengera luso laukadaulo wamagetsi, makamaka SG-DBR (sampling grating DBR) ndi GCSR laser (chothandizira grating cholozera cholumikizira chakumbuyo-chitsanzo chowunikira) . Ukadaulo wowongolera kutentha umasintha kutalika kwa mawonekedwe a laser posintha refractive index of the laser active region. Ukadaulowu ndi wosavuta, koma pang'onopang'ono, ndipo ukhoza kusinthidwa ndi bandi yopapatiza m'lifupi mwake ndi nm zochepa chabe. Zazikulu zochokera ku teknoloji yoyendetsera kutentha ndizoDFB laser(kugawa ndemanga) ndi DBR laser (Kugawa Bragg chiwonetsero). Kuwongolera kwamakina kumakhazikitsidwa makamaka paukadaulo wa MEMS (micro-electro-mechanical system) kuti amalize kusankha kutalika kwa kutalika, ndi bandwidth yayikulu yosinthika, mphamvu yotulutsa kwambiri. Zomangamanga zazikulu zozikidwa paukadaulo wamakina owongolera ndi DFB (mayankho ogawa), ECL (laser yakunja yamkati) ndi VCSEL (laser of the vertical cavity surface emitting laser). Zotsatirazi zikufotokozedwa kuchokera kuzinthu izi za mfundo za lasers tunable.

Optical kulankhulana ntchito

Tunable laser ndi chida chofunikira kwambiri cha optoelectronic mum'badwo watsopano wa dense wavelength division multiplexing system ndi kusinthana kwa photon mu network-optical network. Kugwiritsa ntchito kwake kumawonjezera mphamvu, kusinthasintha ndi scalability wa optical fiber transmission system, ndipo wazindikira kusinthasintha kosalekeza kapena kopitilira muyeso mumitundu yosiyanasiyana.
Makampani ndi mabungwe ofufuza padziko lonse lapansi akulimbikitsa kwambiri kafukufuku ndi chitukuko cha ma lasers osinthika, ndipo kupita patsogolo kwatsopano kumachitika nthawi zonse pankhaniyi. Kuchita kwa ma lasers osinthika kumakhala bwino nthawi zonse ndipo mtengo wake umachepetsedwa nthawi zonse. Pakadali pano, ma lasers osinthika amagawidwa m'magulu awiri: ma semiconductor tunable lasers ndi tunable fiber lasers.
Semiconductor laserndi gwero lofunikira la kuwala mu dongosolo la optical communication, lomwe lili ndi makhalidwe ang'onoang'ono, kulemera kwake, kutembenuka kwakukulu, kupulumutsa mphamvu, ndi zina zotero, ndipo n'zosavuta kukwaniritsa kuphatikiza kwa chip optoelectronic ndi zipangizo zina. Iwo akhoza kugawidwa mu tunable anagawira ndemanga laser, anagawira Bragg galasi laser, micromotor dongosolo ofukula patsekeke pamwamba emitting laser ndi kunja patsekeke semiconductor laser.
Kukula kwa tunable CHIKWANGWANI laser monga sing'anga phindu ndi chitukuko cha semiconductor laser diode monga gwero mpope kwalimbikitsa kwambiri chitukuko cha CHIKWANGWANI lasers. Laser yosinthika imachokera ku 80nm kupeza bandwidth ya doped fiber, ndipo chinthu chosefera chimawonjezedwa pa loop kuti chiwongolere kutalika kwa mawonekedwe ndikuzindikira kuwongolera kwa mafunde.
Kukula kwa tunable semiconductor laser kumagwira ntchito kwambiri padziko lapansi, ndipo kupita patsogolo kulinso mwachangu kwambiri. Pamene ma lasers osinthika pang'onopang'ono amayandikira ma lasers okhazikika a wavelength malinga ndi mtengo ndi magwiridwe antchito, mosakayikira adzagwiritsidwa ntchito mochulukira pamakina olankhulirana ndikuchita gawo lofunikira pama network onse amtsogolo.

Chiyembekezo cha chitukuko
Pali mitundu yambiri ya ma lasers osinthika, omwe nthawi zambiri amapangidwa ndikuyambitsanso njira zosinthira mafunde pamaziko a ma laser amtundu umodzi, ndipo zinthu zina zaperekedwa kumsika padziko lonse lapansi. Kuphatikiza pakukula kwa ma lasers opitilira muyeso, ma lasers osinthika okhala ndi ntchito zina zophatikizika adanenedwanso, monga ma laser tunable ophatikizidwa ndi chip chimodzi cha VCSEL ndi mayamwidwe amagetsi modulator, ndi laser yophatikizidwa ndi chitsanzo cha grating Bragg reflector. ndi semiconductor kuwala amplifier ndi magetsi mayamwidwe modulator.
Chifukwa ma laser tunable laser amagwiritsidwa ntchito kwambiri, laser yosinthika yamitundu yosiyanasiyana imatha kugwiritsidwa ntchito pamakina osiyanasiyana, ndipo iliyonse ili ndi zabwino ndi zoyipa. Laser yakunja ya semiconductor laser ingagwiritsidwe ntchito ngati gwero loyatsira lawideband pazida zoyeserera zolondola chifukwa champhamvu zake zotulutsa komanso kutalika kwake kosalekeza. Pakuwona kuphatikizika kwa ma photon ndikukwaniritsa netiweki yamtsogolo yowoneka bwino, zitsanzo za grating DBR, superstructured grating DBR ndi ma lasers osinthika ophatikizidwa ndi ma modulators ndi amplifiers atha kukhala akulonjeza magwero owunikira a Z.
Fiber grating tunable laser yokhala ndi patsekeke yakunja ndi mtundu wodalirika wowunikira, womwe umakhala ndi mawonekedwe osavuta, mizere yopapatiza komanso kulumikizana kosavuta kwa ulusi. Ngati moduli ya EA imatha kuphatikizidwa pabowo, itha kugwiritsidwanso ntchito ngati gwero lothamanga kwambiri la soliton. Kuphatikiza apo, ma lasers opangidwa ndi fiber lasers apita patsogolo kwambiri m'zaka zaposachedwa. Titha kuyembekezera kuti magwiridwe antchito a ma lasers osinthika m'malo owunikira olumikizirana apitirire patsogolo, ndipo gawo la msika lidzawonjezeka pang'onopang'ono, ndi chiyembekezo chowala kwambiri.