Laser yeDFB ine fiber imwe chete inotenderera

Kakawanda-kamwe-kamwe-kamwe-kamwe-kamwe-kamweLaser yeDFB

Dhizaini yenzira yemaziso

Hurefu hwepakati hwe DFB fiber laser yemazuva ano i1550.16nm, uye chiyero chekuramba divi nedivi chakakura kupfuura 40dB. Zvichienderana nekuti 20dB linewidth yeLaser yefaibha yeDFBiri 69.8kHz, zvinozivikanwa kuti 3dB linewidth yayo ndeye 3.49kHz.

Tsananguro yenzira yemaziso

1. Sisitimu yelaser ine frequency imwe chete

Nzira ye optical inoumbwa nezvinhu zvisingashande zve optical zvakaita se 976 nm inopombwalaser, π-phase shift grating, erbium-doped fiber, uye wavelength division multiplexer. Musimboti unoshanda ndewekuti chiedza chepombi chinogadzirwa ne 976 nm pumped laser chinobuda kuburikidza ne pombi protector uye chakakamurwa kuita nzira mbiri. 20% yechiedza chepombi inopfuura nepamugumo we 980nm we 1550/980nm wavelength division multiplexer uye inopinda mu π-phase shift grating. Laser yembeu inobuda yakabatana ne 1550 nm end ye 1550/980nm WDM mushure mekupfuura nepa fiber isolator. 80% yechiedza chepombi inosanganiswa kuburikidza ne 1550/980 nm wavelength division multiplexer mu 2 m erbium-doped gain fiber EDF yekuchinjana simba, zvichiita kuti laser power amplification ibudirire.

Pakupedzisira, kuburitswa kwelaser kunowanikwa kuburikidza neISO. Laser inobuda yakabatana nespectrometer (OSA) uye optical power meter (PM) yekutarisa laser output spectrum uye laser power. Zvese zvikamu zvenzira ye optical yesystem yese zvakabatana ne fiber optic fusion splicer, zvichiita kuti ive nechimiro che fiber optical chakakwana chine urefu hwe cavity hunosvika mamita gumi. Chinotenderera che line width measurement system chinoumbwa nezvishandiso zvinotevera: 3 dB optical fiber couplers mbiri, 50 km SM-28e single-mode optical fiber delay line, 40 MHz.modulator yeacouste-optic, pamwe chete nemudziyo wekuona fotouye muchina wekuongorora spectrum.

2. Zviyero zvemudziyo:

EDF: Kureba kwewaya iri muC band, aperture yenhamba iri 0.23, peak yekunyudzwa kwemvura iri 1532 nm, kukosha kwakajairika i33 dB/m, uye kurasikirwa kwewelding kuri 0.2 dB.

Chidziviriro chepombi: Chinogona kupa dziviriro yepombi mubhendi re800 kusvika 2000 nm, ine urefu hwepakati hwe976 nm uye simba rekubata 1 W.

Chinobatanidza fiber ye optical: Chinoita kuti simba rechiratidzo che optical rigoverwe kana kusanganiswa. Chinobatanidza fiber ye optical 1*2, ine chiyero chekupatsanura che20:80%, wavelength inoshanda ye976nm, uye single-mode.

Wavelength division multiplexer: Inoita kuti zviratidzo zviviri zve optical zvive nema wavelength akasiyana zvisanganisirwe uye zvipatsanurwe, 980/1550 nm WDM zvisanganisirwe. Fiber iri kumagumo epombi iHi1060, uye fiber iri kumagumo akajairika uye kumagumo echiratidzo iSMF-28e.

Chinobvisa tambo dzemagetsi: Chinodzivirira chiedza kuti chisakanganiswa nechiedza chinodzorwa kumashure, chine urefu hwemafungu hunoshanda hwe1550nm, chinobvisa tambo dzemagetsi dzinoita sedzinochinja, uye simba guru remagetsi rinosvika 1W.