Mumunda wekutaurirana, magetsi ekubatanidza kufambisa kwewaya dzesimbi anorambidzwa zvakanyanya nekuda kwezvinhu zvakaita sekukanganiswa kwemagetsi, inter-code crosstalk uye kurasikirwa, uye mutengo wewaya.
Somugumisiro, kutapurirana kwemaziso kwakazvarwa.Optical transmission ine mabhenefiti ehupamhi bandwidth, hukuru hukuru, kubatanidza nyore, kurasikirwa kwakaderera, yakanaka electromagnetic inoenderana, hapana crosstalk, huremu huremu, saizi diki, nezvimwe, saka kubuda kwemaziso kunoshandiswa zvakanyanya mukufambiswa kwemasaini edhijitari.
Basic chimiro che optical module
Pakati pavo, iyo optical module ndiyo musimboti mudziyo mune optical fiber kutapurirana, uye ayo akasiyana zviratidzo zvinotaridza kuita kwese kwekutapurirana.Iyo optical module inotakura inoshandiswa pakufambisa pakati pekuchinja uye mudziyo, uye basa rayo guru nderekushandura chiratidzo chemagetsi chechigadziro kuita chiratidzo chemaziso pamagumo ekutumira.Chimiro chekutanga chine zvikamu zviviri: "light emitting component uye dhiraivha yayo yekutyaira" uye "chiedza chinogashira chikamu uye dunhu rinogamuchira".
Iyo optical module ine maviri chiteshi, anoti chiteshi chekufambisa uye chiteshi chekugamuchira.
Kuumbwa uye kushanda musimboti wechiteshi chekufambisa
Nzira yekufambisa ye optical module inoumbwa nemagetsi ekuisa chiratidzo chekuisa interface, laser drive circuit, impedance inoenderana nedunhu uye laser chikamu TOSA.
Nheyo yayo yekushanda ndiyo yemagetsi interface yekupinda chiteshi chekufambisa, kubatanidzwa kwechiratidzo chemagetsi kunopedzwa kuburikidza nemagetsi interface wedunhu, uyezve iyo laser yekutyaira dunhu muchiteshi chekufambisa inogadziriswa, uyezve iyo impedance yekufananidza chikamu inoshandiswa kune impedance. kuenzanisa kupedzisa modulation uye dhiraivha yechiratidzo, uye pakupedzisira Tumira iyo laser (TOSA) electro-optical kutendeuka kuita optical chiratidzo chekufambisa chiratidzo chekufambisa.
Kuumbwa uye nheyo yekushanda yechiteshi chekugamuchira
Iyo optical module inogamuchira chiteshi ine yeOptical detector chikamu ROSA (inoumbwa nefotodetection diode (PIN), transimpedance amplifier (TIA)), impedance inoenderana nedunhu, inodzikamisa amplifier wedunhu uye yemagetsi siginecha inobuda.
Nheyo yayo yekushanda ndeyekuti iyo PIN inoshandura iyo yakaunganidzwa optical chiratidzo muchiratidzo chemagetsi nenzira yakaenzana.TIA inoshandura iyi siginecha yemagetsi kuita chiratidzo chemagetsi, uye inokwidziridza iyo yakashandurwa voltage siginecha kune inodiwa amplitude, uye inoiendesa kune iyo inogumira kuburikidza neiyo impedance inoenderana nedunhu Iyo amplifier yedunhu inopedzisa kukwidziridzwa uye kuumbwazve kwechiratidzo, inovandudza chiratidzo- to-noise ratio, inoderedza chiyero chekukanganisa, uye pakupedzisira yemagetsi interface yedunhu inopedzisa kubuda kwechiratidzo.
Kushandiswa kweOptical module
Seye musimboti mudziyo wekushandurwa kwephotoelectric mune optical communications, optical modules anoshandiswa zvakanyanya munzvimbo dzedata.Traditional data centers anonyanya kushandisa 1G/10G low-speed optical modules, nepo cloud data centers kunyanya kushandisa 40G/100G high-speed modules.Nezviitiko zvitsva zvekushandisa zvakadai seyepamusoro-tsanangudzo vhidhiyo, nhepfenyuro yehupenyu, uye VR inotyaira kukurumidza kukura kwepasi rose network traffic, mukupindura kune ramangwana rekusimudzira mafambiro, ari kubuda maapplication akadai se cloud computing, Iaa S masevhisi, uye data hombe inoisa zvakanyanya zvinodiwa. pane data center internal data transmission , Iyo ichabereka optical modules ine yakakwirira yekufambisa mazinga mune ramangwana.
Kazhinji, patinosarudza optical modules, isu tinonyanya kufunga zvinhu zvakaita semamiriro ekushandisa, data transmission rate zvinodiwa, interface mhando, uye optical transmission distances (fiber mode, inodiwa optical simba, centre wavelength, laser type) nezvimwe zvinhu.