Ibyishimo bya kabiri bihuza muburyo bugari

Ibyishimo bya kabiri bihuza muburyo bugari

Kuva havumburwa urwego rwa kabiri rutagira umurongo wa optique optique mu myaka ya za 1960, rwashishikarije abashakashatsi, kugeza ubu, rushingiye ku ngaruka ya kabiri ihuza, hamwe n’inshuro nyinshi, rwaturutse kuri ultraviolet ikabije kugera kuri bande ya infragre ya kure yalaseri, yazamuye cyane iterambere rya laser,optiquegutunganya amakuru, gukemura cyane microscopique imashusho nibindi bice. Ukurikije umurongooptiquehamwe na polarisiyasi ya tewolojiya, ingero-itondekanya idafite umurongo wa optique ifitanye isano rya bugufi na sisitemu ya kristu, kandi coefficente idafite umurongo ntabwo ari zeru gusa mubitangazamakuru bitagereranywa hagati. Nkibikorwa byibanze bya kabiri byateganijwe bidafite umurongo, guhuza kwa kabiri kubangamira cyane ibisekuruza byabo no gukoresha neza fibre ya quartz kubera imiterere ya amorphous hamwe nuburinganire bwikigo. Kugeza ubu, uburyo bwa polarisiyasi (optique polarisiyasi, polarisiyumu yumuriro, amashanyarazi yumuriro) birashobora gusenya ibihimbano byo guhuza ibikoresho hagati ya fibre optique, kandi bigatezimbere neza umurongo wa kabiri udafite umurongo wa fibre optique. Nyamara, ubu buryo busaba tekinoroji yo gutegura igoye kandi isaba, kandi irashobora guhura gusa na quasi-fase ihuza imiterere yuburebure bwa discret. Optical fibre resonant impeta ishingiye kuri echo urukuta rugabanya imipaka yagutse yo kwishima kwa kabiri. Mugusenya uburinganire bwimiterere yubuso bwa fibre, ubuso bwa kabiri bwo guhuza mumiterere yihariye ya fibre yongerewe imbaraga kurwego runaka, ariko biracyashingira kumpompo ya femtosekond ifite imbaraga zo hejuru cyane. Kubwibyo, ibisekuruza byurwego rwa kabiri rutagira umurongo wa optique muburyo bwa fibre fibre no kunoza imikorere yo guhindura, cyane cyane ibisekuru bya spécran ya rugari ya kabiri ihuza imbaraga nkeya, kuvoma optique, nibibazo byibanze bigomba gukemurwa murwego rwa fibre optique nibikoresho, kandi bifite akamaro gakomeye mubumenyi nagaciro gakoreshwa.

Itsinda ry’ubushakashatsi mu Bushinwa ryasabye gahunda ya gallium selenide ya kristu yo guhuza icyiciro hamwe na fibre ya micro-nano. Mugukoresha uburyo bwo hejuru bwa kabiri butondekanya kandi butondekanya intera ndende ya gallium selenide ya kristu, uburyo bwagutse bwa kabiri-bwuzuzanya hamwe nuburyo bwinshi bwo guhindura ibintu buragerwaho, butanga igisubizo gishya cyo kuzamura inzira yibintu byinshi muri fibre no gutegura umurongo mugari wa kabiri-uhuzaisoko yumucyo. Ibyishimo bishimishije bya kabiri bihuza hamwe ninshuro zingana muri gahunda ahanini biterwa nibintu bitatu byingenzi bikurikira: intera ndende yumucyo-intera hagati ya gallium selenide namicro-nano fibre, urwego rwohejuru rwa kabiri-rutondekanya kandi rurerure rwurwego rwa gallium selenide ya kirisiti, hamwe nicyiciro cyo guhuza imiterere yibikorwa byibanze ninshuro ebyiri byanyuzwe.

Muri ubwo bushakashatsi, fibre ya micro-nano yateguwe na sisitemu yo gufata ibyuma bya flame scan ifite akarere kamwe kamwe murwego rwa milimetero, itanga uburebure burebure butagira umurongo kumucyo wa pompe hamwe numurongo wa kabiri uhuza. Itondekanya rya kabiri ridafite umurongo wa polarizabilite ya gallium selenide ihuriweho na kirisiti irenga 170 pm / V, ikaba isumba cyane iyimbere yimbere idafite umurongo wa fibre optique. Byongeye kandi, intera ndende itondekanye ya gallium selenide kristal ituma icyiciro cya kabiri cyivanga cyoguhuza kwa kabiri, bigatanga umukino wuzuye kubwinyungu nini y'ibikorwa bidafite umurongo muri fibre ya micro-nano. Icy'ingenzi cyane, icyiciro gihuza hagati ya pompe optique yuburyo bwibanze (HE11) nuburyo bwa kabiri bwo guhuza uburyo bwo hejuru (EH11, HE31) bigerwaho mugucunga diameter ya cone hanyuma bikagenga ikwirakwizwa rya waveguide mugihe cyo gutegura fibre micro-nano.

Ibihe byavuzwe haruguru byashizeho urufatiro rwo kwinezeza no kwaguka kwagutse ya kabiri ihuza mikorobe ya nano. Ubushakashatsi bwerekana ko umusaruro wa kabiri uhuza urwego rwa nanowatt ushobora kugerwaho munsi ya 1550 nm picosecond pulse laser pompe, kandi ihuriro rya kabiri naryo rishobora gushimishwa neza munsi ya pompe ikomeza ya lazeri yuburebure bumwe, kandi imbaraga zingana ni nk munsi ya microwatts magana (Ishusho 1). Byongeye, iyo itara rya pompe ryongerewe kugeza kuburebure butatu butandukanye bwa lazeri ikomeza (1270/1550/1590 nm), guhuza bitatu bya kabiri (2w1, 2w2, 2w3) nibimenyetso bitatu byinshuro (w1 + w2, w1 + w3, w2 + w3) byubahirizwa kuri buri kimwe cya gatandatu cyumurongo uhinduranya. Mugusimbuza itara rya pompe hamwe na ultra-radiant yumucyo utanga diode (SLED) isoko yumucyo hamwe numuyoboro wa 79.3 nm, umurongo wa kabiri mugari wa kabiri uhuza umurongo wa 28.3 nm (Ishusho 2). Byongeye kandi, niba tekinoroji yo kubika imyuka ya chimique ishobora gukoreshwa mugusimbuza tekinoroji yumye muri ubu bushakashatsi, kandi ibice bike bya kristu ya gallium selenide irashobora guhingwa hejuru ya fibre ya micro-nano intera ndende, hateganijwe uburyo bwa kabiri bwo guhindura imikorere. kurushaho kunozwa.

FIG. 1 Sisitemu ya kabiri ihuza ibisekuruza hamwe nibisubizo muburyo bwa fibre

Igishushanyo cya 2 Imiraba myinshi ivanze hamwe nubugari bwagutse bwa kabiri munsi ya pompe ikomeza