Eprei 15, 2020
Non ekkewe pisekin porousen fiber me ekkewe pisekin angang mi fiti saram, mettoch meinisin ra anongonong won saram. Ika eu signal epwe tongeni pwungupwungoch, a chok fis ren ewe manamanen optical. Ewe meter ren pochokunen saram (OPM) ina ewe pisekin angang mi kon auchea ren an epwe auku pochokunen ewe signal ren saram — ika ese wor, ewe sossotun ririin fiber a usun mefien ew pulse non rochopwak.
Non ekkewe pisekin porousen fiber me ekkewe pisekin pwarata, meinisin ekkewe signal ra anongonong won saram. Iwe, pochokkulen ena saram a wesewesen affata ika ewe signal epwe tongeni pwungupwungoch. Ewe meter ren pochokunen mesen aramas (OPM) ina ewe pisekin angang mi kon auchea ren an epwe auku pochokunen ewe signal ren mesen aramas — ika ese wor, ewe sossotun fiber link a usun chok om kopwe pwisin suki mesom me ekieki.
Ewe nongonongen nongonong ese weires: ew pisekin nengeni saram (fan chommong ew InGaAs ika saramen germanium) a siwini ekkewe esissin mi fis ngeni ekkewe esissin mi fis, me ewe circuitry a siwini ekkewe ngeni ekkewe esisin mi tongeni anneani ewe pochokun mi pwa non dBm (decibel-miliwatts) ika μW (microwatts). dBm ina ew pisekin nengeni: 0dBm = 1mW, -10dBm = 0.1mW, -30dBm = 0,001mW. Ewe auchean dBm pwe a tumunu pwe ekkewe annea repwe tongeni anneani ina mwo ika ewe manamanen optical a tori ekkewe annukun watten — ew fiber link ren 0dBm manamanen an epwe uwei me -25dBm manamanen angei a wor 25dB an aukuuku, wewen 300 fansoun kukkunun manamanen ewe chon angei, nge a pwarata usun ew chok nampa: 25.
Ewe OPM mei auchea nap seni an epwe chok finata pun a fori 3 angang ese tongeni siwin. Akkom, a aukuuku ewe manamanen tou seni ewe pekin transmit pwe epwe annetata pwe ewe saram a angang non spec. Oruuan, a aukuuku ewe manamanen tonong non ewe pekin angei pwe epwe annetata pwe ewe signal a nom won ewe ukukun sensitivity an ewe chon angei. Oruuan, angei seni ekkewe ruu uwa a fis —ewe chok metric mi auchea ren ach sipwe apungu ewe pwungun ririin fiber. Ika repwe chufengen, ekkena ulungat angang ra forata eu unusen ekkesiwinin inisin iteiten fiber link meinisin.
Ew ekiek mi mwaken aramas ra kan eani pwe ekkewe OPM ra chok fan iten ekkewe laboratory. Non ennetin, ekkewe chon angangen ewe neni ra aea ir iteiten ran — ren etiwaen backhaul non ekkewe nenien telecom, sossotun ririfengennin fiber non ekkewe nenien data, me chekin ririfengennin fiber non ekkewe nenien PV. Ewe PK56A a foruta fan iten an epwe aea non nenien angang, a awenewen ngeni ewe pwungun laboratory me ewe tufichin uwei ren poun.
Nupwen ka finata ew OPM, 3 parakraf mei auchea. Kopwe angei emon mi mwaken me ekkewe test rese pwung.
Aewin: wave. Saram non fiber esapw saram mi pwechepwech — ina saram laser ika LED non ekkewe fansoun mi affat. Ekkewe föün äsefich mi chöüfetäl ra kapachelong 850nm (chommong napanap), 1310nm (eü chök napanap), 1550nm (eü chök napanap), me 1625nm (fän iten ewe sossotun DWDM system). Ewe OPM epwe kalisita non ewe pwungun fitikoko档位 pokiten ewe fitikoko a sokono ren fitikoko — ewe chok fitikoko epwe tongeni ruu fansoun fitikoko non 850nm nap seni 1550nm. Ach aea ewe 850nm kapwung ren ach sipwe aukuuku 1550nm saram epwe tongeni fori ekkewe annea epwe fis ren 20% ika nap seni. Ewe PK56A a anisi fisu setin fitikoko mi tori 850nm ngeni 1625nm, a fiti ekkewe fitikoko mi fis non porousen aramas — ese wor fitikoko ese fitikoko epwe osukosuk ren non ewe neni.
Oruuan: pochokunen ran. Ewe range a affata ifa ukukun pochokunen ew signal mi saramaram ewe OPM epwe tongeni auku. Eú chénúpupu mi kon kúkkún a tongeni atai ewe detector ren saram mi péchékkúl; eu range mi kon watte ese tongeni auku saram mi apwangapwang. Ewe tes mi fis lon ewe leeni a kan tori -70dBm ngeni +10dBm. -70dBm ina ewe ukukun sense mi kukkun ren chommong chon angei; +10dBm ina ewe ukukun saram a tou seni chommongun ekkewe nenien saram. Ewe PK56A a tori -70dBm ngeni +10dBm, a fiti chommongun ekkewe nenien urumot.
Oruuan: wenechar. Ewe pwungun OPM a kan pwarata pwe ±0.1dB ngeni ±0.3dB. ±0.1dB wewen non 2% tipis — ewe grade mi nap. ±0.3dB wewen pwe ukukun 7% mwaken — a naf ngeni chommongun ekkewe chon etiwa. A auchea pwe epwe pwung pun ika pwe ew OPM mei wor ±0.3dB pwungun me ewe spec ren engineering a mochen pwe epwe wor tipisin pout seni ewe riri non ±0.5dB, ewe OPM chok epwe angei 60% seni ewe monien tipis mei mumuta, iwe ese wor watten kinikinin ewe riri pwisin.
Ekkewe sossotun fiber mi nomw non uruwo ra mochen chommong pisekin angang: ew OPM ren pochokun, ew pen mi red-saram ren nenien tipis, me ew nenien saram ren an epwe wor signal ren sossot. Ewe PK56A a ionfengenni meinisin ekkewe ulumon non ew chok pisekin angang, me an we nongonong mi auchea ina an epwe meinisin-non-ew.
Ewe PK56A a nomw non ew OPM mei anisi fisu fitikoko me -70dBm ngeni +10dBm fitikoko. Non ena, a wor ew nenien saram mi pwechepwech (650nm) mi nomw non ewe fiber ren ekkewe FC/UPC ika SC/UPC. Ewe saram mi pwechepwech a angang ngeni eu mettoch mi tongeni kuna: lupwen ewe saram mi pwechepwech a tolong lon eu fiber, ika pwe a wor eu ttit lefilen, ewe saram mi pwechepwech a towu lon ewe leeni mi ttit me a tongeni kuna ren mesen aramas. Iei a fokkun öch ngeni ekkewe chon äeä fiber mi äweiresi osukosuk — ese wor lamoten eü OTDR (eü pisekin ällea mi äeä fän iten äeämwäällin fansoun, eü pisek mi äeä fite ngeröü yuan). Ew chok PK56A a mwitir finata ika pwe emon chon jumper mi och.
Ewe PK56A a pwan anisi ekkewe pisekin angang non unusen fonufan. FC, SC, ST, LC, me pwan ekkoch sokkun angang ra anisi ren siwinin ekkewe pisekin angang — ese wor namotan ekkewe pisekin angang mi sokkono ren ew me ew sokkun angang. Non ewe neni, sokopaten system ra aea sokopaten napanap — SC non telecom, LC non nenien data, FC non CATV — me ewe PK56A a anisi chommong napanap a wewen pwe ew chok pisek a angang won meinisin ekkewe napanap.
Non foffor, ewe PK56A a apachanong auchean ren mecheresin angang. An pwarata a pwarata pwe ekkewe dBm me μW ra anneani non ew chok fansoun, me a weneiti ika pwe ewe tes a nom non ewe spec (PASS / AUROUR / FAIL) — ese wor angangen kutta tebel ren poun aramas. A isoni ekkewe test pwe epwe awewe ngeni ekkewe pisekin uruwo.
Non ewe angangen tes ren fiber non ewe neni, chommong tipis mi fis fan chommong ra efisata feiengau ese namwot. Ach weweitiir a eppeti wesewesen osukosuk. Ewe aewin tipis ina om kopwe cheki ewe wavelength me mwen om kopwe auku. Usun met sia fen apasa, ekkewe kapwung ren OPM ra sokono ren ukukun wave. Ika sipwe seti ewe wave档位 mi mwaal, epwe efisata ekkewe allea mi kkuf ren 10% ngeni 20%. Chommong chon angangen ewe neni, pwe repwe amanaua osukosuk, ra aea ewe chok ukukun 档位 ren meinisin ekkewe aukukun — ei epwe tongeni siwin 10% ngeni 20% nupwen ra aukuuku 1310nm me 1550nm ew chok napanap.
Ewe oruuen mwaal, ina ach tunalo limelimochun fiber. Ekkewe puun, oil, ika ekkewe skras won ewe nesoponon ewe fiber (ewe nesoponon ewe chon riri) a efisata an epwe wor watten insertion me ewe fitikoko, me ekkewe tes ra tongeni apasa pwe ewe nesoponon ewe fiber a fis pwe osukosuken fiber link. Ew napanap mi mecheres ne pwisin cheki: me mwen kopwe sotuni, cheki ewe nesoponon ren ew lens mi anapano. Ika pwe a limengaw, kopwe nimeti ren ew stick mi pin ren fiber me alcohol ese wor konik non me mwen kopwe auku. Chommong ‘link mi pout seni spec’ ra pwisin atawei mwirin ar limelimoch.
Ewe aulungatin mwaal, ina ach sotuni eu chok fiber. Non ew ririin fiber, mei wor tipeew ngeni ruu fiber — ew ren an epwe tinato (Tx), ew ren an epwe angei (Rx). Link loss epwe tongeni sokkofesen lefilen ekkewe ruu. Ach sotuni eu chok me angei ekkewe sokkun ekiek epwe tongeni atai osukosuk ren ewe emon. Ewe napanap mi pung ina ach sipwe sotuni ir me ruemon me awewefengenni ewe sokofesenin lus. Ika pwe ewe sokofesen a nap seni 3dB, ew fiber mei tongeni wor an osukosuken bending, fitikoko, ika fitikoko.
Ewe aulungatin tipis ina an ese makketiw ekkewe pisekin tes. Ekkewe pisekin OPM — uwei pochokun, angei pochokun, atai ewe riri — a fori ewe “rekotun pekin safei” ren ew ririin fiber. Ika pwe ese makketiw ekkewe pisekin pwarata mwirin tes, nupwen osukosuken link epwe fis non fansoun mwach, ese wor aanen ach sipwe sinei ika “a murino me nom” ika “a wor osukosuk me nom.” Ewe napanap mi pung ina om kopwe makkei meinisin ekkewe pisekin pwarata mwirin iteiten tes, archive ren nampaan link, forata ew rekotun tes non fansoun.
Ewe sossotun fiber mi unusoch a lap seni chok an epwe aukuuku ewe manaman. Ew unusen angangen etiwa ewe ririin fiber epwe pachenong: sossotun pochokunen ewe pekin tinalo (annetata pwe ewe saram a tou seni ewe nenien saram a nomw non ewe spec), sossotun pochokunen ewe pekin angei (annetata pwe ewe signal a nap seni ewe sensitivity seni ewe chon angei), kapwungun pout seni ewe riri (angei ekkewe ruu me awewe ngeni ekkewe auchean design), sotuni nesoponon mesen ewe fiber (a pwarata pwe ewe saram a tou seni ewe nenien saram a nomw non ewe spec), me ewe sossotun pochokunen ewe pekin angei (a affata pwe ewe signal a nomw won ewe sensitivity ren ewe chon angei), kapwungun pout seni ewe riri (awesi ekkewe ruu me awewe ngeni ekkewe auchean design), ewe sossotun pochokunen ewe fiber (a pwarata pwe ewe saram a tou seni ewe nenien saram a nomw non ewe spec).
Lupwen ka filatá ekkewe pisekin sóssót, esap chék liwinin ewe mettóch epwe affata. Ew pisekin angang mei ririfengen ren OPM me ewe nenien saram mi pwechepwech (usun ewe PK56A) mei murino, mei nukunukoch, me mei fakkun kukkun fansoun nap seni omw kopwe kamo ew OPM me ewe nenien saram mi pwechepwech mei sokono. Ewe auchean auchean ew pisek usun ewe PK56A esapw pwungun aukukun — ina ewe tufichin awesi ew unusen angangen assessment ren fiber link non 10 minich nap seni an epwe uwei 3 pisek, siwini 3 interface, me nenengeni 3 tepwe.
Ekkewe chon kamo repwe pwan ausening ngeni ekkewe pisekin pwarata mi mecheres ar repwe tunalo non ekkewe pisekin kamo: ika ewe pisek a anisi ewe angangen amomo pisek (ren an epwe ririfengen me ekkewe system ren tumunun engineering); ika pwe ekkewe chon fiber ra fiti ekkewe sokkun interfiu mi aea non ewe neni; ika pwe ekkewe fitikoko mi langattam (1625nm, ren ewe tes non DW system lukun ewe band) ra anisi; me ika manauen battery a tori ew unusen ran ren angangen atake. Ekkei poraus ra affata ika ewe pisek a wesewesen fis are epwe muchulo ren an epwe monuki lon eu chepel. View the PV Test Instruments Collection
Kopwe ereni kich usun omw ewe prokram me met ka mochen, iwe am aupwe match ngeni ewe pwungun sossot me awora ew quote non ukukun 24 awa.
Angei ew Quote mi ngawPK56A optical power meter, PK56B-E integrated OPM + red light source (2mW/5mW/10mW/20mW) — five series covering the complete needs from basic optical power testing to long-distance red-light fault location. Seven-wavelength coverage, multi-interface compatibility, wide-temperature design — designed for field testing and acceptance at PV plants, telecom base stations, and data centers.
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