Ubuchwepheshe be-Laser Source for Optical Fiber Steating Ingxenye Yesibili

Ubuchwepheshe be-Laser Source for Optical Fiber Steating Ingxenye Yesibili

2.2 I-Wavelelf Wavelength eshanelaumthombo we-laser

Ukuqashelwa kwe-laser single wavelength sweep empeleni ukulawula izakhiwo ezibonakalayo zedivayisi kui-laserI-cavity (imvamisa i-wavelength ye-bandwidth yokusebenza), ukuze kufinyelelwe ukulawulwa nokukhethwa kwemodi ye-oscillating emide e-cavity, ukuze kufinyelelwe inhloso yokuhlehlisa i-wavelength. Ngokusekelwe kulesi simiso, ekuqaleni kweminyaka yama-1980s, ukugcwaliseka kwama-laser amahle e-fiber atholakala ngokufaka imali ekhombisa ukubonwa kwe-laser nge-laser ekhombisa ukujikeleza, nokukhetha imodi yokushintshanisa ngesandla. Ngo-2011, uZhu et al. Kusetshenziswe izihlungi zezinguquko zokufeza okukodwa kwe-wave-waventh aunble laser okuvelayo nge-linewidth emncane. Ngo-2016, indlela yokucindezela ye-rayleigh linewidth yasetshenziswa ekucindezelweni okubili, okungukuthi, ukucindezelwa kwafakwa ku-FBG ukufeza ukufunwa kwe-wavel-waserth. Imiphumela emibili-ye-wavewthth inxenxa ngentambo yobubanzi obucishe bangu-700 Hz. Ngo-2017, uZhu et al. I-grafgene esetshenzisiwe kanye ne-micro-nano fiber bralg i-gragg ye-bragg ukwenza isihlungi se-all-optical senc, futhi kuhlangene ne-brillouin laser incishing technology, isebenzisa isithombe se-brillouin se-grawning esiseduze ne-750 hz nokuskena okusheshayo kwe-700 MHz / MS ku-wavelength range of 3.67 nm. Njengoba kukhonjisiwe kuMdwebo 5

I-Fig. 5 (a) Ukusethwa kokuhlola kwe-wavelthth ebonakalayo ebonakalayo-I-Fiber Laser ye-Tunseblenohlelo lokulinganisa;

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2.3 Umthombo Wokukhanya Womhlophe we-Laser

Ukuthuthukiswa komthombo wokukhanya omhlophe kuye kwathola izigaba ezahlukahlukene ezinjenge-halogen tungsten lamp, isibani sikadabule,I-Semiconductor Lasernomthombo wokukhanya we-supercontinuum. Ikakhulu, umthombo wokukhanya we-supercontinuum, ngaphansi kokuthokozisa kwe-femtosecond noma i-picosecond pulses ngamandla amakhulu wesikhashana, ukhiqize imiphumela emibi yama-oda ahlukahlukene ku-waveguide, futhi i-spectrum isondele kakhulu, futhi ingabumba ibhendi kusuka ekuhambeni okubonakalayo. Ngaphezu kwalokho, ngokushintsha ukuhlakazwa kanye nokungahambi kahle kwefayibha ekhethekile, i-spectrum yayo inganwetshwa ngisho nasebhendini eliphakathi nendawo. Lolu hlobo lomthombo we-laser lusetshenziswe kakhulu emikhakheni eminingi, efana ne-tomography yokuhlangana ye-optical, ukutholwa kwegesi, ukucabanga kwemvelo nokunye. Ngenxa yomkhawulo womthombo wokukhanya kanye ne-neverlinear medium, i-supercontinuum yokuqala yakhiqizwa ikakhulukazi ingilazi eqinile ye-laser yokupompa ingilazi yokupompa ingilazi ukukhiqiza i-supercontinuum spectrum kuhlu olubonakalayo. Kusukela ngaleso sikhathi, kancane kancane iba yindawo enhle kakhulu yokukhiqiza i-wideband supercontinuum ngenxa yenkambu yayo enkulu yokuhambisa kanye nemodi yokuhambisa encane. Imiphumela emihle engalingani ifaka ukuxubana kwama-wave, ukuguquguquka kokushintshanisa, ukuguquguquka kwesigaba, ukuguquguquka kwesigaba, ukuhlukaniswa kwe-ram-frequency, njll. Ngokuvamile, manje umthombo wokukhanya weSupercontinuum ubheke kakhulu ekuthuthukiseni amandla ama-laser nokwandisa ibanga elibukekayo, futhi unake ukulawulwa kokuhlangana kwalo.

3 Isifinyezo

Leli phepha lifingqa futhi libuyekeze imithombo ye-laser esetshenziselwa ukusekela ubuchwepheshe bokuzwa kwefayibha, kufaka phakathi i-linewidwidth laser, i-litemflect frequency tunneble laser ne-laser emhlophe ebanzi. Izidingo zesicelo kanye nesimo sokuthuthuka salawa ama-lasers emkhakheni wokuzwa kwe-fiber atwenishwa ngokuningiliziwe. Ngokuhlaziya izidingo zabo kanye nentuthuko yentuthuko, kuphetha ngokuthi umthombo ofanele we-laser wokuzwa kwe-fiber angafinyelela okukhipha ama-laser anciphile futhi aqinile we-laser kunoma yiliphi iqembu. Ngakho-ke, siqala ngomugqa omncane we-laser, umugqa omncane we-randth we-laser kanye ne-laser emhlophe ekhanyayo nge-bandwidth ebanzi yokuthola i-bandwidth, futhi uthole indlela ephumelelayo yokubona umthombo ofanele we-laser wokuzwa ngokuhlaziya ukuthuthuka kwabo.