Kuti ive nechokwadi chekuvimbika uye hupenyu hwesevhisi yeoptical fiber yekutaurirana mitsara, tembiricha hunhu uye mechaniki maitiro eiyo optical fibers zvakare maviri akakosha ekuita kwemuviri paramita.
1. Kupisa maitiro e optical fiber
Kurasikirwa kwefiber optical kunogona kurondedzerwa neattenuation coefficient of optical fiber, uye kuvharidzira kwekombiki ye optical fiber yakabatana zvakananga nekushanda kwekushanda kwe optical fiber communication system, ndiko kuti, inowedzerwa nesimba re tembiricha, kunyanya munzvimbo yakaderera tembiricha. Chikonzero chikuru chekuwedzera attenuation coefficient of optical fiber ndiko kurasikirwa kwemicrobending uye kurasikirwa kwekukotama kweiyo optical fiber.
Iyo microbending kurasikirwa kwefiber nekuda kwekushanduka kwekushisa kunokonzerwa nekuwedzera kwekupisa uye kuputika. Zvinozivikanwa mufizikisi kuti thermal yekuwedzera coefficient yesilicon dioxide (SiO2) inoumba optical fiber idiki kwazvo, uye haidzike kana tembiricha yadzikira. Iyo optical fiber inofanira kuvharwa uye kuwedzerwa pamwe nezvimwe zvikamu panguva yekugadzira tambo. Iyo yekuwedzera coefficient yezvinhu zvekupfeka uye zvimwe zvikamu zvakakura. Apo kutonhora kunoderera, shrinkage inowedzera. Nokudaro, kana kutonhora kuchichinja, coefficient yekuwedzera yezvinhu zvakasiyana. , Ichaita kuti optical fiber ikotame zvishoma, kunyanya munzvimbo yakaderera yekushisa.
Iyo curve pakati pekuwedzera kurasikirwa kwefiber uye tembiricha inoratidzwa mumufananidzo. Sezvo tembiricha inoderera, iyo yekuwedzera kurasikirwa kwefiber zvishoma nezvishoma inowedzera. Kana tembiricha inodonha kusvika -55 ° C, kurasikirwa kwekuwedzera kunowedzera zvakanyanya.
Naizvozvo, kana uchigadzira optical fiber communication system, zvinodikanwa kuti utarise iyo yakakwirira uye yakaderera tembiricha cycle bvunzo dzeiyo optical cable kutarisa kana kurasikirwa kwefiber optical kunosangana nezvinodiwa zve index.
2. Mechanical maitiro e optical fiber
Kuti uone kuti iyo optical fiber haiputsi mune zvinoshanda uye ine kuvimbika kwenguva refu kana ichishandiswa munzvimbo dzakasiyana-siyana, inodiwa kuti iyo optical fiber inofanirwa kuve neimwe mechanical simba.
Sezvinozivikanwa kune vese, zvinhu zvinoumba yazvino optical fiber iSiO2, iyo inofanirwa kudhonzwa mu125 μm filaments. Munguva yekudhirowa, kusimba kwekusimba kweiyo optical fiber inenge 10 ~ 20kg / mm². Simba rinogona kusvika 400kg / mm². Hunhu hwemakanika hwatinoda kukurukura hunonyanya kureva kusimba nehupenyu hwefiber.
Kusimba kwefiber yemaziso pano zvinoreva kusimba kwesimba. Kana iyo fiber iri pasi pekunetseka kwakanyanya kupfuura iyo inogona kumira, fiber inoputika.
Kana iri yekupwanya kwesimba re optical fiber, inoenderana nehupamhi hweiyo yekuputira layer. Kana ukobvu hwekuputira huri 5 ~ 10μm, simba rekupwanya riri 330kg / mm², uye kana ukobvu hwekuputira huri 100μm, inogona kusvika 530kg / mm².
Chikonzero chekuparara kwefiber kunokonzerwa nekuremara kwepamusoro pepreform pachayo panguva yekugadzirwa kwefiber optical. Kana kukakavara kuchigamuchirwa, kushushikana kunonangana pane chikanganiso. Kana tension inopfuura imwe nhanho, fiber inoputika.
Kuti uve nechokwadi chekuti optical fiber inogona kuve nehupenyu hwesevhisi inopfuura makore makumi maviri, iyo optical fiber inofanirwa kuiswa pasi pesimba rekuongorora bvunzo. Chete optical fibers inosangana nezvinodiwa inogona kushandiswa kune cabling.
Zvinodiwa zvesimba refayibha munyika dzekunze zvinoratidzwa patafura.
Optical faibha inobvumidzwa kuomarara kunosanganisira:
(1) kuomerwa kwefiber optical panguva yekugezera;
(2) Kuoma kwefiber optical kunokonzerwa nezvimwe zvinhu pakuisa tambo yemaziso;
(3) Kuomarara kwefiber optical kunokonzerwa nekushandurwa kwekushisa kwenzvimbo yekushanda.
Zvinoenderana nedata rekune dzimwe nyika, kana kuomarara kweiyo optical fiber kuri 0.5%, hupenyu hwayo hunogona kusvika makore makumi maviri kusvika makumi mana.
