Amaza okukhanya ayimisebe ye-electromagnetic ekhiqizwa ama-electron ngesikhathi sokunyakaza kwe-athomu. Ukunyakaza kwama-electron kuma-athomu ezinto ezihlukahlukene kuhlukile, ngakho amaza okukhanya awakhiphayo nawo ahlukile.
I-Spectrum iyiphethini yokukhanya kwe-monochromatic ehlukaniswe uhlelo lokuhlakazeka (njenge-prism ne-grating) ngemva kokuba ukukhanya kwe-polychromatic kuhlukaniswe uhlelo lokuhlakazeka, oluhlelwa ngokushintshana ngokuya nge-wavelength (noma imvamisa). Ibizwa ngokuthi i-optical spectrum ngokugcwele.
Lapho sihlola i-transmitter tosa, ngokuvamile sifaka ipharamitha, i-SMSR (I-Side Mode Suppression Ratio). Isilinganiso senani eliphezulu lamandla emodi eyinhloko kumandla wemodi eseceleni sibizwa ngokuthi i-side mode suppression ratio, okuyinkomba ebalulekile yokusebenza kwemodi ye-longitudinal. Ngokuvamile, lapho ukala isilinganiso sokunqatshwa kwemodi eseceleni, idinga ukusetshenziswa kanye nomaka nokuhlaziya ku-spectral analyzer. Umenzi usetshenziselwa ukukhomba ukuphakama kwegagasi elimaphakathi kanye nenani eliphakeme kakhulu lesibili lamagagasi. Funda iziqongo ezimbili. Isilinganiso sokwenqatshwa kwemodi eseceleni umehluko wezinga lamandla phakathi kweziqongo ezimbili. Ingabalwa ngezinketho ezincane ekuhlaziyeni.
Ichazwa njengesilinganiso semodi ye-longitudinal eyinhloko amandla optical M1 kanye nemodi eseceleni egcwele amandla optical M2 ngaphansi kwesimo sokuguquguquka okugcwele.
Ifomula yokubala ithi:
I-SMSR=10*lg(M1/M2)
Ku-transmitter ebonakalayo, ngokuvamile kuchazwa ukuthi i-SMSR inkulu kuno-30dB; okusho ukuthi, amandla okubona wemodi yobude obuyinhloko aphindwe izikhathi ezingaphezu kwezingu-1000 amandla okubona emodi eseceleni ephezulu. Lapho inani le-SMSR liphakeme, indlela yokukhanya igxila kakhulu. Njengoba kukhonjisiwe emfanekisweni ongezansi: i-SMSR ingu-51dB
Okungenhla incazelo yolwazi lwe-Lightwave elethwe yi-Shenzhen HDV Phoelectron Technology Co., Ltd., engumkhiqizi wezokuxhumana obonakalayo futhi ekhiqiza inkampani yemikhiqizo yezokuxhumana. Siyakwamukela ukuthi uvakashele wethuikhasi lomkhiqizo. Siyabonga ngokufunda lesi sihloko.