Kutanga, ruzivo rwekutanga rweiyo optical module
1. Tsanangudzo yeOptical module:
Optical module: kureva, iyo optical transceiver module.
2.Chimiro cheOptical module:
Iyo optical transceiver module inoumbwa neiyo optoelectronic mudziyo, inoshanda dunhu uye optical interface, uye optoelectronic mudziyo unosanganisira zvikamu zviviri: kutumira uye kugamuchira.
Chikamu chekufambisa ndeichi: chiratidzo chemagetsi chinopinza imwe kodhi chiyero chinogadziriswa nechomukati chekutyaira chip kutyaira semiconductor laser (LD) kana mwenje emitting diode (LED) kuburitsa modulated mwenje chiratidzo chechiyero chinoenderana, uye optical. simba otomatiki kudzora redunhu iri mukati inopiwa imomo.Iyo yakabuda optical chiratidzo simba rinoramba rakagadzikana.
Chikamu chekugamuchira ndechekuti: optical sign input module yeimwe code rate inoshandurwa kuita chiratidzo chemagetsi neiyo photodetecting diode.Mushure meiyo preamplifier, chiratidzo chemagetsi cheyero yekodhi inoenderana inobuda, uye chiratidzo chekubuda chinowanzo PECL level.Panguva imwecheteyo, chiratidzo chealarm chinobuda mushure mekuisa simba remagetsi risingasviki pane imwe kukosha.
3.The parameters uye kukosha kweiyo optical module
Optical modules ane akawanda akakosha optoelectronic technical parameters.Nekudaro, kune maviri anopisa-swappable optical modules, GBIC uye SFP, anotevera maparamita matatu anonyanya kunetseka pakusarudza:
Center wavelength
Mune nanometers (nm), pane ikozvino mhando nhatu huru:
850nm (MM, multimode, yakaderera mutengo asi pfupi yekufambisa kureba, kazhinji chete 500M);1310nm (SM, single mode, kurasikirwa kukuru panguva yekufambisa asi kupararira kudiki, kunowanzo shandiswa kutapurirana mukati me40KM);
1550nm (SM, single mode, kurasikirwa kwakaderera panguva yekufambisa asi kupararira kukuru, kunowanzo shandiswa kuendesa kure-kure pamusoro pe40KM, uye inogona kutumira zvakananga 120KM pasina relay);
Transmission rate
Huwandu hwemabhiti (bits) e data inofambiswa pasekondi, mu bps.
Parizvino kune marudzi mana anowanzoshandiswa: 155 Mbps, 1.25 Gbps, 2.5 Gbps, 10 Gbps, nezvimwe zvakadaro.Mwero wekutapurirana unowanzo dzokera kumashure unoenderana.Nokudaro, 155M optical module inonziwo FE (100 Mbps) optical module, uye 1.25G optical module inonziwo GE (Gigabit) optical module.Iyi ndiyo module inonyanya kushandiswa mune optical transmission equipment.Mukuwedzera, chiyero chayo chekufambisa mufiber storage systems (SAN) ndeye 2Gbps, 4Gbps uye 8Gbps.
Transmission distance
Chiratidzo chemaziso hachidi kuendeswa kune chinhambwe chinogona kufambiswa zvakananga, mumakiromita (anonziwo makiromita, km).Optical modules kazhinji ane zvinotevera zvinotsanangurwa: multimode 550m, single mode 15km, 40km, 80km, uye 120km, zvichingodaro.
Chechipiri, iyo yekutanga pfungwa ye optical modules
1.Laser chikwata
Laser ndiyo inonyanya kukosha chikamu cheiyo optical module iyo inopinza ikozvino mune semiconductor zvinhu uye inoburitsa laser mwenje kuburikidza nephoton oscillations uye kuwana mumhango.Parizvino, anonyanya kushandiswa lasers iFP uye DFB lasers.Musiyano ndewekuti semiconductor zvinhu uye dhizaini chimiro zvakasiyana.Mutengo welaser yeDFB unodhura zvakanyanya kudarika FP laser.Optical modules ane transmission distances anosvika 40KM anowanzo shandisa FP lasers.Optical modules ane transmission distances≥40KM kazhinji inoshandisa DFB lasers.
2.Transmitted optical simba uye kugamuchira kunzwa
Iyo inofambiswa optical simba inoreva kubuda kwemagetsi emagetsi emwenje pamagumo ekutumira eiyo optical module.Iyo yekugamuchira senitivity inoreva hushoma hwakagashirwa optical simba reiyo optical module pane imwe chiyero uye bit kukanganisa mwero.
Iwo mayuniti eaya maparamita maviri dBm (zvinoreva decibel milliwatt, logarithm yesimba unit mw, fomula yekuverenga ndeye 10lg, 1mw inoshandurwa kuita 0dBm), iyo inonyanya kushandiswa kutsanangura kureba kwechigadzirwa, kureba kwakasiyana, chiyero chekufambisa uye Iyo optical module's optical transmit simba uye inogamuchira senitivity ichave yakasiyana, chero bedzi kureba kwekufambisa kuchigona kuvimbiswa.
3.Kurasikirwa uye kupararira
Kurasikirwa ndiko kurasikirwa kwesimba rechiedza nekuda kwekutorwa uye kupararira kwepakati uye kubuda kwechiedza kana chiedza chichiendeswa mufiber.Ichi chikamu chesimba chinoraswa pane imwe nhanho sezvo chinhambwe chekufambisa chichiwedzera.Kupararira kunonyanya kukonzerwa nekusaenzana kwemafungu emagetsi emagetsi akasiyana-siyana achipararira muchikamu chimwe chete, izvo zvinoita kuti zvikamu zvakasiyana-siyana zvewavelength zvechiratidzo chemaziso kusvika kugamuchira kupera panguva dzakasiyana nekuda kwekuunganidzwa kwechinhambwe chekufambisa, zvichikonzera kuwedzera kwepuru uye nekudaro kusakwanisa kusiyanisa masaini.value.Aya ma paramita maviri anonyanya kukanganisa kureba kwekufambisa kweiyo optical module.Muchigadziro chaicho chekushandisa, 1310nm optical module inowanzoverenga kurasikirwa kwekubatanidza pa 0.35dBm/km, uye 1550nm optical module inowanzoverenga kurasikirwa kwekubatanidza pa .20dBm/km, uye inoverenga kukosha kwekuparadzira.Yakaomesesa zvakanyanya, kazhinji chete yekutarisa.
4.Hupenyu hwe optical module
International yakabatana zviyero, 50,000 maawa ebasa rinoenderera, maawa makumi mashanu (50,000 makore akaenzana nemakore mashanu).
Iyo SFP optical modules ese ari LC interfaces.Iyo GBIC optical modules ese ari SC interfaces.Mamwe mainterface anosanganisira FC neST.