Qhov txawv ntawm FP thiab DFB Lasers

Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis,semiconductor laserstau nce siv hauv kev sib txuas lus, kev kho mob, kev lag luam thiab lwm yam kev lag luam. Ntawm lawv, FP (Fabry-Perot) lasers thiab DFB (distributed tawm tswv yim) lasers yog ob lub teeb pom kev zoo, txhua tus muaj cov yam ntxwv tshwj xeeb thiab qhov zoo.

1. FP laser
FP laser, lub npe tag nrho Fabry-Perot laser, yog ib tug semiconductor laser raws li lub hauv paus ntsiab lus ntawm multi-beam cuam tshuam. Nws yog tsim los ntawm cov kab noj hniav resonant (feem ntau yog tsim los ntawm ob daim iav) thiab qhov nruab nrab nce (xws li cov khoom siv semiconductor). Thaum tam sim no dhau los ntawm qhov nce nruab nrab, cov photons generated tau rov qab los rau hauv cov kab noj hniav resonant ntau zaus los tsim cov qauv cuam tshuam, yog li tso tawm lub teeb laser. FP lasers feem ntau yog siv rau kev sib kis luv luv luv, xws li kev sib kis feem ntau hauv 20 mais, thiab cov nqi feem ntau nyob hauv 1.25G. FP muaj ob lub wavelengths, 1310nm / 1550nm.
1. Nta
Multi-longitudinal hom tso zis: FP lasers feem ntau tso tawm ntau hom longitudinal, uas yog, ntau lub teeb nthwv dej nrog cov wavelengths zoo sib xws oscillate ib txhij.
Wide spectral dav: Vim muaj ntau hom longitudinal, qhov dav ntawm FP lasers yog qhov dav.
High modulation rate: Tsim nyog rau daim ntawv thov scenarios uas xav tau kev hloov kho siab, xws li kev sib txuas lus luv luv.
Kub rhiab heev: FP lasers rhiab heev rau qhov kub thiab txias hloov thiab tej zaum yuav xav tau kev ntsuas kub ntxiv.
2. Cov chaw thov
Kev sib txuas lus luv luv: xws li kev sib txuas sab hauv hauv cov chaw khaws ntaub ntawv, cov chaw hauv cheeb tsam hauv cheeb tsam, thiab lwm yam.
Lub teeb qhov chaw rau kev sib txuas lus fiber ntau optic: Hauv qee qhov kev siv tus nqi-sensitive, FP lasers tuaj yeem siv los ua lub teeb ci.
Optical sensing thiab ntsuas: Siv nws cov yam ntxwv ntawm ntau hom longitudinal rau qee qhov tshwj xeeb sensing thiab ntsuas daim ntawv thov.

Cov kev tsis zoo yog qhia hauv cov lus hauv qab no:

2.DFB laser
DFB laser, lub npe tag nrho cov lus tawm tswv yim laser, yog ib lub laser semiconductor uas siv Bragg grating kom ua tiav ib hom ntev ntev tso zis. Nws koom nrog Bragg grating hauv lub laser kom tsuas yog lub teeb ntawm ib lub wavelength tshwj xeeb tuaj yeem tsim yoj sawv ntsug thiab ua kom nrov nrov, yog li ua tiav ib qho kev tso tawm ntev ntev. DFB (Distributed Feedback Laser) feem ntau siv ob lub wavelengths, 1310nm thiab 1550nm, thiab muab faib rau hauv tub yees thiab unrefrigerated. Nws yog tsuas yog siv rau high-ceev nruab nrab thiab ntev kis tau tus mob, thiab kis tau tus mob nyob deb ntawm feem ntau ntau tshaj 40 kilometers.

1. Nta
Ib hom longitudinal tso zis: DFB laser tsuas yog outputs ib longitudinal hom, uas yog, ib tug wavelength lub teeb yoj.
Nqaim spectrum dav: Vim yog cov yam ntxwv ntawm ib hom longitudinal, spectrum dav ntawm DFB laser yog nqaim heev, feem ntau tsawg dua 1MHz.
High side hom suppression ratio (SMSR): Lub SMSR ntawm DFB laser tuaj yeem siab li 40-50dB, uas txhais tau hais tias lub zog sib txawv ntawm hom tseem ceeb thiab sab hom loj.
Kev ruaj ntseg zoo: DFB laser kuj ruaj khov rau kev hloov pauv ntawm qhov kub thiab txias tam sim no, thiab tsim nyog rau kev sib kis mus ntev.
Cov nyhuv chirp qis: Raws li kev hloov pauv ncaj qha, cov nyhuv chirp ntawm DFB laser yog me me, uas yog qhov zoo rau kev xa cov ntaub ntawv ceev.
2. Daim ntawv thov teb
Kev sib txuas lus nyob deb: xws li cov pob txha caj qaum thiab lub nroog loj hauv kev sib txuas lus hauv kev sib txuas lus.
Analog teeb liab kis tau tus mob: xws li RF teeb liab kis tau tus mob nyob rau hauv cable TV (CATV) system.
Kev ntsuas qhov ntsuas thiab ntsuas qhov ntsuas: siv nws txoj kab nqaim dav thiab ruaj khov siab rau kev ntsuas ntsuas thiab ntsuas qhov ntsuas.
Kev tshawb fawb txog kev tshawb fawb thiab kev ua tub rog: xws li kev siv high-end xws li spectral tsom xam thiab qhov chaw kho qhov muag.

Cov kev tsis zoo yog qhia hauv cov lus hauv qab no:

Raws li tuaj yeem pom los ntawm cov lus saum toj no, qhov sib txawv tseem ceeb ntawm FP thiab DFB lasers yog qhov sib txawv spectral dav. Qhov dav spectral ntawm DFB lasers yog feem ntau nqaim thiab yog ib hom longitudinal ntawm cov lus tawm tswv yim tsis zoo. FP laser muaj qhov dav dav spectrum dav thiab yog ntau hom longitudinal laser. Lawv cov kev khiav hauj lwm wavelengths, pib tam sim no, thiab rau pem hauv ntej voltages kuj txawv.

Muaj qhov sib txawv tseem ceeb ntawm FP lasers thiab DFB lasers hauv cov qauv, kev ua haujlwm hauv paus ntsiab lus, kev ua haujlwm zoo thiab daim ntawv thov. FP lasers yog tsim rau kev sib txuas lus luv luv thiab qee yam kev siv tshwj xeeb nrog lawv cov kev tso tawm ntau qhov ntev, kev hloov pauv siab thiab tus nqi qis; thaum DFB lasers yog tsim rau ib hom longitudinal tso zis, nqaim linewidth, siab sab hom kev sib piv thiab zoo stability. Nws tau dhau los ua thawj qhov kev xaiv teeb pom kev zoo hauv thaj chaw ntawm kev sib txuas lus mus ntev, analog teeb liab kis tau tus mob thiab ntsuas qhov tseeb. Thaum xaiv ib lub laser, qhov zoo thiab qhov tsis zoo ntawm ob qho tib si yuav tsum tau hnyav raws li qhov xav tau ntawm cov ntawv thov tshwj xeeb scenario.Yog tias koj txaus siab, thov koj xav tiv tauj peb kom paub meej ntxiv txog cov khoom.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.