Yese-fiber imwe-frequencyDFB laser
Optical nzira dhizaini
Iyo yepakati wavelength yeyakajairwa DFB fiber laser i1550.16nm, uye reshiyo yekuramba-kudivi-kudivi yakakura kupfuura 40dB. Tichifunga kuti iyo 20dB mutsara weaDFB faibha laseriri 69.8kHz, zvinogona kuzivikanwa kuti mutsara wayo we3dB i3.49kHz.
Tsanangudzo yeOptical nzira
1. Single-frequency laser system
Iyo nzira yekuona inoumbwa neye passive optical components se 976 nm pumped.laser, π -phase shift grating, erbium-doped fiber, uye wavelength division multiplexer. Nheyo yekushanda ndeyekuti mwenje wepombi inogadzirwa ne976 nm pumped laser inobuda kuburikidza nemudziviriri wepombi uye yakakamurwa kuita nzira mbiri. 20% yemwenje wepombi inopfuura nepa980nm kumagumo kwe1550/980nm wavelength division multiplexer uye inopinda mu π -phase shift grating. Iyo inobuda mbeu sosi laser yakabatana kune 1550 nm kupera kwe1550/980nm WDM mushure mekupfuura nepakati fiber isolator. 80% yemwenje wepombi inosanganiswa kuburikidza ne1550/980 nm wavelength division multiplexer kuita 2 m erbium-doped kuwana fiber EDF yekutsinhana kwesimba, kuwana laser simba rekusimudzira.
Pakupedzisira, iyo laser inobuda inowanikwa kuburikidza ne ISO. Iyo inobuda laser inoteedzana yakabatana kune spectrometer (OSA) uye optical simba mita (PM) yekutarisa iyo laser inobuda spectrum uye laser simba. Zvese zvikamu zveiyo yese system's optical nzira zvakabatanidzwa nefiber optic fusion splicer, ichiwana yakazara optical fiber system chimiro chine mhango kureba ingangoita gumi metres. Iyo loop yemutsara wehupamhi yekuyera sisitimu inoumbwa neanotevera midziyo: maviri 3 dB optical fiber couplers, 50 km SM-28e single-mode optical fiber kunonoka mutsara, 40 MHz.acouste-optic modulator,uyewo aphotodetectoruye spectrum analyzer.
2. Device parameters:
EDF: Iyo yekushanda wavelength iri muC bhendi, iyo nhamba aperture i0.23, iyo peak yekunyura i1532 nm, iyo yakajairika kukosha i33 dB/m, uye kurasikirwa kwewelding i0.2 dB.
Mudziviriri wepombi: Inogona kupa dziviriro yepombi mu800 kusvika 2000 nm bhendi, ine yepakati wavelength ye976 nm uye simba rekubata simba re1 W.
Optical fiber coupler: Inoziva kugovera kana kusanganiswa kwesimba rekuona chiratidzo. 1 * 2 optical fiber coupler, ine kupatsanurwa kwechiyero che20: 80%, kushanda kwewavelength ye976nm, uye imwe-mode.
Wavelength division multiplexer: Inoziva kusanganiswa uye kupatsanurwa kwezviratidzo zviviri zvemaziso akasiyana-siyana, 980/1550 nm WDM. Iyo fiber pamagumo epombi ndeye Hi1060, uye iyo fiber pamagumo ekupedzisira uye chiratidzo chekuguma iSMF-28e.
Optical fiber isolator: Inodzivirira chiedza kubva pakukanganiswa nechiedza chinodzokera shure, nekushanda kwe1550nm, bipolar isolator, uye simba guru rekuona re1W.
Nguva yekutumira: Sep-08-2025