Iboptical zog meter(OPM) ntsuas lub zog theem ntawm cov teeb liab teeb liab hauv optical fiber. Nyob rau hauv lub cuab yeej, lub photodetector hloov cov photons tuaj rau hauv lub teeb liab hluav taws xob, uas tau ua tiav thiab pom ntawm cov zaub ua dBm (decibel-milliwatts) lossis mW (milliwatts). Yog tias koj ua haujlwm hauv telecom, cov chaw zov me nyuam, lossis kev lag luam fiber ntau, qhov nofiber optic hwj chim meteryog ib qho cuab yeej uas koj yuav ncav cuag yuav luag txhua hnub - thaum lub sij hawm installation, ntawv pov thawj, thiab kev tu txhua hnub.
Feem ntau cov qauv siv tes ntsuas los ntawm kwv yees li −70 dBm rau +10 dBm, thaum siab dua -end units nrog cov attenuators sab nraud txuas mus rau +26 dBm. Qhov chaw nres nkoj input feem ntau lees txais FC lossis SC connectors, nrog LC thiab ST muaj los ntawm kev hloov pauv hloov tau.
Yuav ua li cas lub ntsuas hluav taws xob Optical ua haujlwm
Hauv plawv ntawm lub cuab yeej yog lub photodetector - lub sensor me me uas nqus cov photons thiab tsim cov hluav taws xob sib npaug. Cov photocurrent no ntws mus rau hauv lub tshuab hluav taws xob transimpedance, tau txais digitized los ntawm ADC, thiab tom qab ntawd muab piv rau cov ntaub ntawv calibration khaws cia hauv lub cuab yeej firmware. To taub qhov nooptical zog ntsuassaw hlau yog qhov tseem ceeb rau kev txhais koj cov txiaj ntsig kom raug - tus lej kawg ntawm koj lub vijtsam yog qhov tshwm sim ntawm qhov kev sib piv qhov ntsuas, tsis yog qhov kev nyeem ntawv raw.
Nyob nruab nrab ntawm lub fiber connector thiab lub detector, ib lub tsom tsom teeb coj divergent teeb mus rau lub detector lub active cheeb tsam, thaum optical bandpass lim tsis kam wavelengths sab nraum lub hom phiaj band. Nyob rau siab dua - qauv fais fab (nyob saum toj no +10 dBm), ib qho ua tau - nyob rau hauv attenuator pads lub teeb liab los tiv thaiv lub detector los ntawm saturation.
Ib yam uas ua rau cov kws tshaj lij tshiab: koj yuav tsum teeb tsa qhov tseeb wavelength ntawm lub 'meter' ua ntej nyeem ntawv. Cov cuab yeej siv qhov kev teeb tsa no los saib lub ntsuas ntsuas lub luag haujlwm los ntawm lub rooj calibration sab hauv. Yog tias koj qhov chaw nyob ntawm 1550 nm tab sis lub ntsuas ntsuas tau teeb tsa rau 1310 nm, kev nyeem ntawv yuav raug tawm los ntawm 0.5 dB lossis ntau dua - thiab qhov yuam kev yog nyob ntsiag to, yog li nws yooj yim los sau cov ntaub ntawv tsis zoo yam tsis paub txog nws.
Ntes Technologies
Lub detector yog ib feem uas feem ntau txiav txim siab dab tsi kojoptical fiber ntau lub zog ntsuasmuaj peev xwm thiab ua tsis tau - nws cov rhiab heev pem teb, wavelength kev pab them nqi, teb ceev, thiab siab tshaj plaws hwj chim tuav.
Photodiode Detectors
Yuav luag txhua lub rooj zaum thiab lub rooj zaum OPM siv ib qho ntawm peb cov khoom siv photodiode:
Silicon (Si)- Npog li 400–1100 nm. Qhov zoo tshaj plaws rau 850 nm multimode txuas thiab pom - lub teeb laser ua haujlwm. Koj yuav pom silicon detectors nyob rau hauv feem ntau pob nyiaj siv -tier meters tsom rau tsev kawm ntawv LAN xeem.
Germanium (zeeg)- Npog txog 700–1800 nm, tuav ob qho tib si 1310 nm thiab 1550 nm ib leeg- hom kev ntsuas. Qhov no ua rau nws xaiv qhov kev xaiv dav dav rau - lub hom phiaj telecom meters hauv sub-$ 300 nqe ntau. Kev lag luam tawm yog qhov tsaus ntuj dua tam sim no piv rau InGaAs, uas ua rau lub suab nrov hauv pem teb ob peb dB.
Indium Gallium Arsenide (InGaAs)- Npog 800–1700 nm. Tus qauv kub rau telecom-band ntsuas vim lub suab qis thiab siab linearity, tshwj xeeb tshaj yog hla C-band (1530–1565 nm) thiab L-band (1565–1625 nm). Yog tias koj xav tau kev mob siab rau1550 fiber ntau optical fais fab meteroptimized rau C-band thiab L-band ua haujlwm, InGaAs yog cov khoom siv los nrhiav. Qhov downside yog tus nqi - loj- cheeb tsam InGaAs ntes tau ntxiv $100–200 rau daim nqi ntawm cov ntaub ntawv.
Thermal Detectors
Thermal fais fab ntsuas nqus lub teeb tuaj rau hauv cov xim dub thiab ntsuas qhov kub thiab txias ntawm lub thermopile. Qhov zoo dua yog qhov yuav luag tiaj tus spectral teb los ntawm UV mus txog deb -infrared - zoo tagnrho raws li ib tuglaser lub teeb fais fab meterrau siab - daim ntawv thov zog. Lawv tuav lub hwj chim ntawm li 10 mW mus rau hauv ntau -kilowatt ntau, tab sis lawv qeeb (0.2-2 thib ob teb lub sij hawm) thiab tsis muaj qhov rhiab heev los ntsuas txhua yam hauv qab no txog −20 dBm. Cov no muaj nyob rau hauv laser manufacturing thiab physics labs, tsis yog teb cov khoom siv.
Hom Optical Power Meters
Los ntawm Form Factor
Handheld- Roj teeb-powered, nyob rau hauv 300 g, nrog ib tug backlit LCD thiab feem ntau yog ib tug built- nyob rau hauv VFL. Tus nqi pib ib ncig ntawm $80 rau Ge- ntsuas ntsuas thiab nce mus txog $500+ rau InGaAs qauv nrog cov ntaub ntawv kaw lus thiab Bluetooth. Qhov no yog cov cuab yeej niaj hnub rau kev siv thev naus laus zis.
Lub rooj zaum- Cov cuab yeej Lab nrog kev ntsuas qhov ntsuas tsis paub tseeb hauv qab ± 3%, cov suab nrov hauv pem teb ze −80 dBm, cov ntaub ntawv sib sib zog nqus, thiab cov txiaj ntsig analog / cuam tshuam. Cia siab tias yuav them $2,000–$10,000+. Siv nyob rau hauv R&D labs, ntau lawm QC, thiab calibration chaw.
Modular- Plug-nyob rau hauv daim npav rau khib-mounted mainframe platforms. Muab cov khoom siv hluav taws xob ntsuas hluav taws xob nrog cov khoom siv laser tunable, hloov kho qhov muag, thiab cov attenuators sib txawv los tsim cov khoom siv hluav taws xob ntau -channel xeem chaw nres tsheb rau kev tsim khoom thiab kev sim ua raws.
Los ntawm Kev Siv Ib puag ncig
Txuj- Lub hom phiaj -fiber optical hwj chim metercalibrated ntawm ntau telecom wavelengths (850 nm, 1310 nm, 1490 nm, 1550 nm). Ntsuas tag nrho cov hluav taws xob kho qhov muag nkag mus rau qhov chaw nres nkoj input. Yog tias muaj ntau lub wavelengths tam sim no ib txhij, nws tshaj tawm cov lej suav nrog tsis muaj kev sib cais channel.
PON - Yog tias koj nruab lossis tuav FTTH tes hauj lwm, ib qho kev mob siab rauFTTH optical zog ntsuasyog tsim nyog nqis peev rau. PON meters siv sab hauv WDM filtering los ntsuas 1310 nm, 1490 nm, thiab 1550 nm ib txhij thiab tso saib lawv cais, thiab lawv tswj qhov tawg - hom kev tsheb thauj mus los uas cov ntsuas ntsuas tsis tuaj yeem ntseeg tau.
MPO- Txais MPO/MTP connectors ncaj qha thiab scans tag nrho 8, 12, los yog 24 fibers nyob rau hauv ib tug ua hauj lwm, txiav lub sij hawm xeem ntawm 10+ feeb mus rau hauv qab 30 vib nas this ib connector. Qhov tseem ceeb rau cov ntaub ntawv chaw tsim tawm.
Cov ntawv thov tseem ceeb ntawm Optical Power Meters
Fiber Optic Network Deployment and Maintenance
Qhov no yog qhov feem ntauoptical zog ntsuaskhwv tau lawv khaws cia. Thaum lub sij hawm tsim kho tshiab, koj tab tom txheeb xyuas lub tshuab hluav taws xob tso zis hluav taws xob, lub zog hluav taws xob receiver, thiab tag nrho qhov kawg - rau - xaus qhov kev poob qis tawm tsam qhov txuas lub zog pob nyiaj siv. Ntawm kev saib xyuas, kev ntsuas ib ntus qhia kev sib txuas ntawm cov khoom sib txuas, macro- khoov, thiab lwm yam teeb meem ua ntej lawv ua rau muaj kev puas tsuaj.
Data Center thiab High -Speed Interconnects
Ntawm 400G thiab 800G, PAM4 kev hloov kho yuav tsum muaj cov teeb liab nruj dua - rau - suab nrov piv thiab txo qis zog ntawm cov npoo loj heev. Multi-port thiab MPOfiber ntau optic fais fab meteryog cov cuab yeej siv tau ntawm no - thaum lees paub 500 tus qauv cabling txuas txuas nrog GPU pawg hauv qhov chaw kawm AI, koj xav tau kev ntsuas nrawm npaum li qhov raug.
Optical Cheebtsam R & D thiab Manufacturing
Transceiver manufacturers, WDM lim lwm tus neeg, thiab EDFA cov neeg siv fais fab ntsuas raws li inline QC rooj vag thoob plaws hauv ntau lawm. Cov cuab yeej ntawm no feem ntau yog lub rooj zaum lossis cov qauv, nrog kev ntsuas tsis meej ntawm ± 2.5% lossis zoo dua thiab tag nrho traceability rau cov qauv ntsuas hauv tebchaws.
Avionics, Kev Tiv Thaiv, thiab Tshwj Xeeb Networks
Tub rog thiab aerospace platforms xav tau ib tus zuj zus cov ntaub ntawv ntsuas rau txhua splice thiab connector, siv ruggedized handheld meters nrog ncua kev ntsuas kub (−10℃rau +50 degree), ib tug qauv xws li MIL-PRF-49291.
Kev tshawb fawb thiab kev kawm
Hauv tsev kawm qib siab optics labs, lub ntsuas hluav taws xob txuas kev xav nrog lub cev tus cwj pwm. Thaum xaiv covqhov zoo tshaj plaws optical fais fab ntsuas rau tsev kawm tshawb fawb lab, nrhiav cov chav nyob hauv lub rooj zaum nrog ntau- wavelength calibration, ntsuas qhov ntsuas tsis paub tseeb, thiab cov ntaub ntawv- muaj peev xwm kaw tau uas txhawb nqa cov kev sim ua haujlwm rov ua dua.
Optical Power Meter vs Lwm Cov Khoom Siv Fiber Test
Optical Power Meter vs OTDR
Iboptical zog meterqhia rau koj tag nrho qhov poob qhov poob - ib tus lej, hauv dB. Ib qho OTDR tsim qhov kev ncua deb -mapped kab uas qhia txhua qhov xwm txheej (connectors, splices, khoov, so) nrog rau qhov chaw thiab tus neeg poob. Yog tias qhov txuas tsis ua haujlwmOPM kev xeemnrog 5.2 dB tawm tsam 4.0 dB pob nyiaj siv, OTDR pinpoints qhov teeb meem. Cov qauv kev lag luam xws li TIA-568 thiab ISO 14763 xav tau ob qho kev xeem.
Optical Power Meter vs Optical Light Source (OLS)
Ob lub cuab yeej no tsim ib qhofiber ntau optic OLTS(Optical Poob Test Set). Lub teeb ci muab lub teeb liab CW ruaj khov ntawm ib kawg; lub zog ntsuas ntsuas tau txais lub zog ntawm lwm qhov. Tsis muaj txiaj ntsig zoo rau kev sim poob ib leeg. Thaum yuav koj thawj zaugfiber ntau lub teeb qhov chaw thiab lub zog ntsuascov khoom siv, cov txheej txheem sib txuam los ntawm ib lub chaw tsim khoom zam qhov teeb meem wavelength compatibility thiab feem ntau raug nqi tsawg.
Optical Power Meter vs Visual Fault Locator (VFL)
Lub VFL txhaj tshuaj pom lub teeb liab liab rau hauv cov fiber ntau kom pom qhov tsis raug. Lub ntsuas hluav taws xob muab cov ntaub ntawv tsis raug suav nrog tab sis tsis muaj cov ntaub ntawv spatial. Ntau lub ntsuas ntsuas ntsuas ua ke ob qho haujlwm - ntsuas qhov poob, tom qab ntawd tig mus rau VFL hom txhawm rau nrhiav qhov txhaum.
Yuav Ua Li Cas Xaiv Qhov Kev Ntsuas Hluav Taws Xob Optical
Wavelength Range- Sib phim lub ntsuas hluav taws xob lub Hoobkas-calibrated wavelengths rau koj lub network: 850/1300 nm rau multimode, 1310/1550 nm rau ib hom -, thiab 1490 nm rau PON. Ib lub 'meter' tsuas yog "rated" rau ib pawg tab sis tsis ntsuas ntawm koj qhov tshwj xeeb wavelength yuav cuam tshuam thiab poob qhov tseeb.
Kev ntsuas qhov ntsuas thiab qhov tseeb- Ib txwm siv tes tuav npog −70 dBm rau +10 dBm. Rau amplified DWDM channels lossis twj lasers, koj yuav xav tau +20 dBm lossis siab dua. A ± 5% tsis paub meej yog qhov zoo rau kev ua haujlwm, tab sis kev sim ntau lawm yuav tsum tsom ± 2.5% lossis zoo dua nrog kev ntsuas qhov ntsuas tau.
Connector Compatibility- Feem ntau cov 'meter' nkoj nrog FC lossis SC receptacles. Yog tias koj lub chaw khaws ntaub ntawv khiav LC connectors, ib haiv neeg LC cov tswv yim txuag adapter - mob taub hau thiab zam qhov ntxiv 0.1–0.3 dB ntawm qhov poob ntawm cov adapters.
Cov ntaub ntawv khaws cia thiab kev sib txuas- Rau cov haujlwm loj (500+ txuas), koj xav tau lub sijhawm sau cia nrog USB lossis Bluetooth xa tawm. Tus khub software los ntawm VIAVI, EXFO, lossis AFL tsim cov ntawv tshaj tawm rau cov ntaub ntawv ua raws.
Muaj nuj nqi ntxiv- Ua tau-hauv VFL, pass/fail indicators, and max/min/invice tuav ceev ceev ua hauj lwm teb. Ntsuas seb cov haujlwm twg phim koj cov haujlwm niaj hnub ua ntej them nyiaj ntxiv.
Yuav Siv Lub Tshuab Ntsuas Hluav Taws Xob Li Cas (Step by Step)
Cov txheej txheem txheej txheem suav nrog kev ntsuas qhov poob qis siv aLub teeb qhov hluav taws xob ntsuasteeb tsa. Qhov no yog qhov feem ntaulub zog ntsuas ntsuaskev ua haujlwm hauv thaj chaw.
Kauj Ruam 1: Kev Npaj- Tshawb xyuas qib roj teeb thiab ntxuav txhua qhov fiber ntau kawg - ntsej muag nrog lint - cov ntaub so dawb lossis ib qho - nyem lub tshuab ntxhua khaub ncaws. Dirty connectors yog tus naj npawb ib qhov ntawm kev ntsuas qhov yuam kev.
Kauj Ruam 2: Txuas Cov Khoom Siv Fiber- Txuas tus paub- zoo siv thaj qaum ncaj qha ntawm lub teeb pom kev zoo thiab lub zog ntsuas hluav taws xob. Lub rooj txuas txuas ruaj khov thiab zam kev khoov ntse.
Kauj ruam 3: Teeb Parameters- Teem ob lub teeb ci thiab lub ntsuas hluav taws xob mus rau tib qhov kev ntsuas wavelength. Muab ob npaug rau- xyuas ob qho tib si ua ntej ua haujlwm.
Kauj Ruam 4: Teem Cov Lus Qhia (Xoom)- Tos 5–10 feeb rau qhov chaw kom ruaj khov, tom qab ntawd nias lub pob REF lossis ZERO txhawm rau khaws cov qib tam sim no raws li koj qhov 0 dB hauv paus.
Kauj Ruam 5: Txuas lub Fiber Hauv Kev Ntsuas- Ntxig qhov txuas hauv qab kev sim ntawm cov hlua siv thiab lub ntsuas. Cov zaub tam sim no qhia tau tias tsis muaj qhov cuam tshuam rau koj qhov kev siv.
Kauj Ruam 6: Sau thiab txheeb xyuas- Sau cov txiaj ntsig. Yog tias poob ntau dua li cov peev nyiaj, rov- ntxuav thiab rov ntsuas dua ua ntej qhov kev ua txhaum. Yog tias qhov teeb meem tshwm sim tom qab ntxuav, siv OTDR los kho nws.
Feem ntau yuam kev thiab cov kev coj ua zoo tshaj plaws
Qhov yuam kev kom zam
qias neeg connectors- lub luag haujlwm rau kev ntsuas tsis zoo ntau dua li tag nrho lwm cov laj thawj ua ke. Ntxuav ua ntej txhua qhov kev sib txuas.
Kev teeb tsa wavelength tsis raug- ua yuam kev 0.5–1.5 dB uas tsis muaj nyob rau ntawm - tshuaj ntsuam ceeb toom.
Hla lub kauj ruam siv- yam tsis muaj nws, koj tab tom nyeem lub zog tsis muaj zog (dBm) es tsis txhob txuas qhov poob (dB), ua tsis tiav cov txiaj ntsig dhau / tsis ua tiav.
Fiber stress thaum ntsuas- nruj khoov thiab tsis txhawb nqa cables qhia qhov poob uas tsis sawv cev rau qhov txuas txuas.
Hnav adapters- misalignment los ntawm hnav lub tes tsho ceramic degrades repeatability. Hloov cov adapters tsis tu ncua.
Cov kev coj ua zoo tshaj plaws
Ntxuav, tshuaj xyuas, ces ntxuav duasiv cov kev soj ntsuam fiber ntau ntawm 200x-400x magnification.
Calibrate raws sijhawm- feem ntau manufacturers pom zoo calibration txhua xyoo. Qhov systematic 0.3 dB offset tau ci rau hauv txhua qhov kev ntsuas ntawm tag nrho qhov project.
Cia lub meter thermally ruaj khov- 10–15 feeb tom qab tsiv ntawm qhov kub thiab txias.
Taug qab kev ntsuas raws sijhawm- Cov ntaub ntawv keeb kwm yav dhau los yog ib qho ntawm cov cuab yeej ua haujlwm yooj yim tshaj plaws rau kev sib txuas ntawm fiber ntau.
Siv ib qho kev sib koom ua kerau cov kab sib txawv ntawm cov loj -core multimode fibers lossis LED qhov chaw.
Kaw thiab khaws cov twj paj nruag kom zoo- lub qhov rais determinated contaminated degrades txhua qhov kev ntsuas tom ntej.
