Kungave kubatanidza nharaunda kana kutenderera makondinendi, kumhanya uye kurongeka ndizvo zviviri zvakakosha zvinodiwa kune fiber optic network inotakura yakakosha basa kutaurirana. Vashandisi vanoda kukurumidza FTTH zvinongedzo uye 5G nhare dzekubatanidza kuti vawane telemedicine, mota inozvimiririra, vhidhiyo musangano uye mamwe bandwidth akanyanya maapplication. Nekubuda kwenhamba huru yenzvimbo dzedata uye kukurumidza kuvandudzwa kwehungwaru hwekugadzira uye kudzidza muchina, pamwe nekumhanyisa network kumhanya uye kutsigirwa kwe800G uye pamusoro, ese fiber maitiro ave akakosha.
Zvinoenderana neiyo ITU-T G.650.3 standard, optical time domain reflectometer (OTDR), optical loss testing device (OLTS), chromatic dispersion (CD), uye polarization mode dispersion (PMD) bvunzo zvinodiwa kuti iite comprehensive fiber identification uye kuve nechokwadi chepamusoro network performance. Naizvozvo, kutonga maCD kukosha kwakakosha pakuona kutapurirana kutendeseka uye kushanda nesimba.
Kunyange zvazvo CD iri chimiro chechisikigo chemhando dzose dze optical fibers, iyo inowedzera kuwedzera kwebroadband pulses pamusoro pemarefu marefu, maererano neITU-T G.650.3 chiyero, kupararira kunova dambudziko kune optical fibers ine data transmission rates inopfuura 10 Gbps. CD inogona kukanganisa zvakanyanya kunaka kwechiratidzo, kunyanya mumasisitimu ekukurumidzira ekutaurirana, uye kuyedza ndiyo kiyi yekugadzirisa dambudziko iri.
Chii chinonzi CD?
Kana mapurusi akareruka emhando dzakasiyana-siyana achipararira mune optical fibers, kupararira kwechiedza kunogona kukonzera pulse kupindirana uye kukanganisa, zvichizotungamira mukudzikira kwemhando yechiratidzo chinofambiswa. Kune marudzi maviri ekupararira: kupararira kwezvinhu uye waveguide dispersion.
Material dispersion chinhu chinowanikwa mumhando dzese dzeoptical fibers, izvo zvinogona kukonzera mawavelengths akasiyana kuti aparadzire nekumhanya kwakasiyana, zvichizopedzisira zvaita kuti wavelengths isvike kune kure kure transceiver panguva dzakasiyana.
Waveguide dispersion inoitika mune waveguide chimiro cheoptical fibers, uko masaini masaini anopararira kuburikidza nepakati uye kuvharika kwemafiber, ayo ane akasiyana refractive indices. Izvi zvinoguma nekuchinja kwehupamhi hwemunda wemodhi uye mutsauko mukumhanya kwechiratidzo pane yega wavelength.
Kuchengeta imwe dhigirii reCD kwakakosha kudzivirira kuitika kwemamwe maitiro asina mutsara, saka zero CD haifanirwe. Asi CD inofanirwa kudzorwa pamwero unogamuchirika kudzivirira kukanganisa kwakashata pachiratidzo chekuvimbika uye kunaka kwesevhisi.
Chii chinokanganisa rudzi rwefiber pakupararira?
Sezvambotaurwa, CD hunhu hwechisikigo hwemhando ipi neipi yefiber, asi mhando yefiber inoita basa rakakosha mukugadzirisa CD. Network operators vanogona kusarudza "zvakasikwa" dispersion fibers kana fiber dzine dispersion curves offset kuderedza kukanganiswa kweCD mukati meimwe wavelength yakasiyana.
Iyo fiber inonyanya kushandiswa mumambure emazuva ano ndiyo yakajairwa ITU-T G.652 fiber ine kupararira kwechisikigo. ITU-T G-653 zero dispersion shifted fiber haitsigire DWDM transmission, nepo G.655 isiri zero dispersion shifted fiber ine CD yakaderera, asi yakagadziridzwa marefu marefu uye inodhurawo.
Pakupedzisira, vashandisi vanofanirwa kunzwisisa mhando dzefiber optics mumatiweki avo. Kana yakawanda ye optical fibers yakajairika G.652, asi mamwe mamwe marudzi efibers, zvino kana maCD ari muhutano hwose asingagoni kuonekwa, hutano hwebasa huchakanganiswa.
Mukupedzisa
Kupararira kweChromatic kunoramba kuri dambudziko rinofanirwa kugadziriswa kuti ive nechokwadi chekuvimbika uye kugona kweakanyanya-kumhanya masisitimu ekutaurirana. Fiber maitiro uye kuyedzwa kwakakosha pakugadzirisa kupararira kuoma, kupa ruzivo kune matekinoroji nemainjiniya kugadzira, kuendesa, uye kuchengetedza zvivakwa zvinotakura kutaurirana kwepasirese kwakakosha. Nekuenderera mberi nekusimudzira uye nekuwedzera kwetiweki, Softel icharamba ichigadzira uye kuburitsa mhinduro kumusika, ichitungamira nzira mukutsigira kutorwa kwehunyanzvi hwepamusoro.
Nguva yekutumira: Mar-20-2025