Fiber ea mofuta o le mong: mokokotlo oa khalase o tšesaane haholo (bophara ba mantlha hangata ke 9 kapa 10) μ m), mokhoa o le mong feela oa fiber optical o ka fetisoa.
Phatlalatso ea intermodal ea fiber ea mofuta o le mong e nyane haholo, e loketseng puisano e hole, empa ho boetse ho na le phallo ea lintho tse bonahalang le phallo ea waveguide.Ka tsela ena, fiber ea mofuta o le mong e na le litlhoko tse phahameng bakeng sa bophara ba spectral le botsitso ba mohloli oa leseli, ke hore, bophara ba spectral bo lokela ho ba bo fokolang mme botsitso bo lokela ho ba bo botle.
Hamorao, ho ile ha fumanoa hore ka 1.31 μ Ho M wavelength, ho qhalakanngoa ha lintho tse bonahalang le ho hasana ha waveguide ea fiber e le 'ngoe e ntle le e mpe,' me boholo bo tšoana hantle.Kahoo, sebaka sa 1.31 μ M sa wavelength se fetohile fensetere e sebetsang hantle haholo ea puisano ea fiber ea optical, hape ke sehlopha se ka sehloohong se sebetsang sa tsamaiso ea puisano ea fiber optical 1.31μM likarolo tse ka sehloohong tsa fiber e tloaelehileng ea mokhoa o le mong li khethoa ke ITU-T. ka tlhahiso ea G652, kahoo mofuta ona oa fiber o boetse o bitsoa fiber ea G652.
Ha ho bapisoa le fiber ea multimode, fiber ea mofuta o le mong e ka tšehetsa sebaka se selelele sa phetisetso.Ho 100Mbps Ethernet le marang-rang a 1G gigabit, fiber ea mode e le 'ngoe e ka tšehetsa sebaka sa phetisetso ho feta 5000m.
Ho ea ka pono ea litšenyehelo, hobane transceiver ea optical e theko e boima haholo, litšenyehelo tsa ho sebelisa fiber ea optical mode e le 'ngoe e tla ba e phahameng ho feta ea multi-mode optical fiber cable.
Kabo ea index ea refractive e tšoana le ea fiber e fetotsoeng, 'me bophara ba mantlha ke 8 ~ 10 μ m feela.Leseli le hasana ho latela axis e bohareng ea fiber core ka sebopeho sa mola.Hobane mofuta ona oa fiber o ka fetisa mokhoa o le mong feela (ho senyeha ha linaha tse peli tsa polarization), e bitsoa fiber ea mofuta o le mong, 'me ho sotha ha eona ho nyenyane haholo.
Tlhaloso ea "single-mode optical fiber" libukeng tsa thuto: ka kakaretso, ha V e ka tlase ho 2.405, ke leqhubu le le leng feela le fetang har'a fiber ea optical, kahoo e bitsoa single-mode optical fiber.Mokotla oa eona o tšesaane haholo, o ka bang 8-10 microns, 'me mokhoa oa ho hasana o monyenyane haholo.Ntho e ka sehloohong e amang bophara ba sehlopha sa phetisetso ea fiber ea optical ke ho qhalakanngoa ho fapaneng, 'me mokhoa oa ho hasana ke oa bohlokoa ka ho fetisisa,' me ho hasana ha fiber ea optical e nyenyane ka mokhoa o le mong, ka hona, leseli le ka fetisetsoa sebaka se selelele ka makhetlo a mangata. sehlopha.
Fiber ea optical e nang le mokhoa o le mong e na le bophara ba mantlha ba li-micron tse 10, tse ka lumellang phetisetso ea beam e le 'ngoe le ho fokotsa mefokolo ea bandwidth le modal dispersion.Leha ho le joalo, ka lebaka la bophara bo bonyenyane ba fiber optical mode e le 'ngoe, ho thata ho laola phetisetso ea mahlaseli, kahoo e hloka laser e theko e boima haholo e le mohloli oa leseli,' me moeli o ka sehloohong oa fiber ea optical optical mode e le 'ngoe e ka har'a ho hasana ha thepa, Single. mode optical cable haholo-holo e sebelisa laser ho fumana bandwidth e phahameng.Hobane LED e tla hlahisa palo e kholo ea mehloli ea leseli e nang le li-bandwidth tse fapaneng, tlhokahalo ea ho hasana ha thepa e bohlokoa haholo.
Ha ho bapisoa le fiber ea multimode, fiber ea mofuta o le mong e ka tšehetsa sebaka se selelele sa phetisetso.Ho 100Mbps Ethernet le marang-rang a 1G gigabit, fiber ea mode e le 'ngoe e ka tšehetsa sebaka sa phetisetso ho feta 5000m.
Ho ea ka pono ea litšenyehelo, kaha transceiver ea optical e theko e boima haholo, litšenyehelo tsa ho sebelisa fiber ea optical mode e le 'ngoe e tla ba holimo ho feta ea mefuta e mengata ea optical fiber cable.
Single mode fiber (SMF)
Ha ho bapisoa le fiber ea multimode, bophara ba mantlha ba fiber ea mode e le 'ngoe bo bobebe haholo, ke 8 ~ 10 μ m feela.Single mode fiber e sebelisoa ho 1.3 ~ 1.6 μ Sebakeng sa wavelength ea M, ka moralo o nepahetseng oa kabo ea index ea refractive ea fiber ea optical le khetho ea lisebelisoa tse hloekileng haholo ho lokisa lesela le leholo ka makhetlo a 7 ho feta mantlha. tahlehelo e fokolang le ho hasana ho fokolang ho ka finyelloa ka nako e le 'ngoe sehlopheng sena.
Single mode optical fiber e sebelisoa tsamaisong e telele le e phahameng ea optical fiber communication, optical fiber sebakeng sa marang-rang le lisebelisoa tse fapaneng tsa optical fiber.
Nako ea poso: Mar-08-2022