Okubizwa ngokuthi isihlungi se-narrow-band sihlukaniswe isihlungi se-band-pass, futhi incazelo yaso iyafana neyesihlungi se-band-pass, okungukuthi, isihlungi sivumela isignali ye-optical ukuthi idlule kubhendi ethile ye-wavelength, futhi ichezuka kusihlungi se-band-pass.Amasignali okubona nhlangothi zombili avinjiwe, futhi ibhande lokudlula lesihlungi se-narrowband lincane kakhulu, ngokuvamile lingaphansi kuka-5% yenani elimaphakathi le-wavelength.
Umsebenzi oyinhloko wesihlungi sebhande elincane ukwedlula ukukhanya kobude obuthile begagasi futhi sibonise (noma sinciphise) izingxenye zokukhanya zokukhanya kwamanye amaza.Ububanzi begagasi elinguhhafu buvamise ukulawulwa ku-20nm noma ngaphansi, futhi bungasetshenziswa ku-ultraviolet, ukukhanya okubonakalayo, amaza amaza aseduze ne-infrared, namabhande e-infrared akude.Izihlungi zenkampani yethu ezinamabhendi amancane zakhiwa ukuhwamuka kwe-vacuum ephezulu kwamafilimu aqinile anezendlalelo eziningi kanye nokufakwa okusizwa yi-ion kwama-nanomaterials.Ukubumbana okuhle nokuchazwa kwesithombe okuphezulu.