Iinkcukacha zokusebenza kwesihluzo ziinkcazo eziyimfuneko zokusebenza kwesihluzo kulwimi olunokuqondwa lula ngabayili beenkqubo, abasebenzisi, abavelisi besihluzo, njl. Ngamanye amaxesha umenzi wesihluzo ubhala iinkcukacha ngokusekelwe ekusebenzeni okunokwenzeka kwesihluzo. Ngamanye amaxesha zibhalwa ngumenzi wesihluzo ngokusekelwe ekusebenzeni okunokwenzeka kwesihluzo, nokuba kumsebenzisi, okanye kwikhathalogu yemveliso eqhelekileyo engasetyenziswanga ngokucacileyo, eyokugqibela esingayi kuyixoxa apha. Kwiimeko ezininzi, iinkcukacha zokusebenza zihlala zibhalwa ngumyili wenkqubo.
Ukuze kufunyanwe ukusebenza okufunekayo kwinkqubo, umyili uchaza ukusebenza okufunekayo kwesihluzo kwi-metric. Xa ebhala i-metric enjalo, umbuzo wokuqala ekufuneka uphendulwe ngulo: Yintoni le filter esetyenziselwa yona? Injongo yesihluzo kufuneka ichazwe ngokucacileyo nangokuchanekileyo, kwaye oku kuya kuba sisiseko sokubhala. Akukho ndlela icwangcisiweyo yokuchaza iinkcukacha zokusebenza. Ngamanye amaxesha ukusebenza kwenkqubo esetyenziswa kuyo isihluzo kufuneka kube kwinqanaba elithile, kungenjalo akuyi kubakho ngqwalasela kwinkcazo eyongezelelweyo. Iimfuno zokusebenza zesihluzo kufuneka zimiselwe ngokulula, kodwa oku akusoloko kulula. Akukho mfuneko ipheleleyo yokusebenza; ukusebenza kufuneka kube phezulu kangangoko ubunzima okanye ixabiso elinokwenzeka livumela. Kule meko, inkqubo isebenzisa izihluzo zokusebenza ezahlukeneyo, kwaye ukusebenza kufuneka kulungelelaniswe neendleko zayo, ubunzima, kunye nokukwazi ukwenza izigqibo malunga nokuba yintoni efanelekileyo. I-metric yokugqibela iya kuba kukuvumelana phakathi koko kufunekayo noko kunokwenzeka. Oku kudla ngokufuna igalelo lolwazi oluninzi loyilo kunye nolwemveliso, kunye nonxibelelwano olusondeleyo phakathi komsebenzisi kunye nomenzi. Kubalulekile ukukhumbula ukuba iinkcukacha ezingazanelisiyo izicelo ezisebenzayo zizinto nje ezinomdla kwezemfundo. Umzekelo, makhe siqwalasele ngokufutshane le ngxaki: indlela yokufumana umgca we-spectral kwi-spectrum eqhubekayo. Ngokucacileyo, kufuneka isihluzo se-narrowband, kodwa yeyiphi i-bandwidth kwaye loluphi uhlobo lwesihluzo olufunekayo? Amandla omgca we-spectral odluliselwa sisihluzo aya kuxhomekeka ikakhulu kwi-peak transmittance yayo (ukuba indawo ye-peak yesihluzo ingahlengahlengiswa rhoqo kumgca we-spectral kwingxaki), ngelixa amandla e-continuum spectrum aya kuxhomekeka kwindawo iyonke engaphantsi kwe-transmittance curve, kubandakanya ummandla we-wavelength cutoff kude ne-peak. Okukhona i-passband incinci, kokukhona umahluko phakathi kwe-harmonic continuum kunye ne-continuous spectrum uphezulu, ngakumbi njengoko i-passband iba ncinci, nto leyo edla ngokwandisa i-cutoff. Nangona kunjalo, okukhona i-passband incinci, kokukhona kuya kubiza kakhulu ukuyenza, kuba ukuncitshiswa kwe-passband kwandisa ubunzima bokuvelisa; kwaye kuya kwenza i-allowable focal ratio ibe nkulu, kuba kwandisa ngakumbi ukuva kwi-optical noncollimation. Ingongoma yokugqibela apha ithetha ukuba kwicandelo elifanayo lombono, i-bandwidth encinci yesihluzo kufuneka yenziwe ibe nkulu, ukuze kusetyenziswe i-focal ratio enkulu, kodwa oku kuya kwandisa ubunzima bokwenziwa kunye nobunzima benkqubo yonke. Enye indlela yokuphucula ukusebenza kwesihluzo kukunyusa i-edge steepness ye-passband kodwa usagcina i-bandwidth efanayo. Imilo ye-passband engunxande inomahluko ophezulu kune-filter elula ye-Fabry-Perot enobubanzi obufanayo, kwaye i-passband inenzuzo eyongezelelweyo yokuba i-cutoff kude ne-filter peak nayo iba nkulu. Ukuchaza olu thambeka lomda nge-1/10 bandwidth okanye i-1/100 bandwidth kunokumiselwa. Kwakhona, okukhona umda unyuka, kokukhona kunzima kwaye kubiza kakhulu ukuvelisa.
–Eli nqaku likhutshwe nguumenzi womatshini wokugquma nge-vacuumGuangdong Zhenhua
Ixesha leposi: Sep-28-2024