ʻO nā mea hoʻonui Optical ma ke kahua o ka launa fiber optical

ʻO nā mea hoʻonui Optical ma ke kahua o ka launa fiber optical

An mea hoʻonui ʻikehe mea hana e hoʻonui ai i nā hōʻailona opi. Ma ke kahua o ke kamaʻilio fiber optical, hana nui ia i kēia mau hana: 1. Hoʻonui a hoʻonui i ka mana optical. Ma ke kau ʻana i ka mea hoʻonui optical ma ka ʻaoʻao mua o ka transmitter optical, hiki ke hoʻonui ʻia ka mana optical e komo ana i ka fiber. 2. Hoʻonui i ka relay pūnaewele, hoʻololi i nā Repeater i loaʻa i nā ʻōnaehana kamaʻilio fiber optical; 3. Preamplification: Ma mua o ka photodetector ma ka hopena e loaʻa ai, ua hoʻonui muaʻia ka hōʻailona māmā nāwaliwali e hoʻonui i kaʻike o ka loaʻa.

I kēia manawa, ʻo ka Optical amplifiers i hoʻohana ʻia i ka Optical fiber communication ka nui o nā ʻano penei: 1. Semiconductor optical amplifier (SOA Optical amplifier) / Semiconductor laser amplifier (SLA Optical amplifier); 2. ʻO nā mea hoʻokiʻekiʻe fiber doped earth-doped, e like me nā amplifiers fiber-doped maunu (EDFA Optical amplifier), etc. 3. ʻO nā mea hoʻonui fiber nonlinear, e like me nā fiber Raman amplifiers, a pēlā aku.

1. Semiconductor optical amplifier: Ma lalo o nā kūlana noi like ʻole a me nā ʻano like ʻole o ka nānā ʻana i ka maka, hiki i nā laser semiconductor ke hana i nā ʻano like ʻole o ka semiconductor optical amplifier. Inā ʻoi aku ka haʻahaʻa o ka holo kaʻa o ka laser semiconductor ma mua o kona paepae, ʻo ia hoʻi, ʻaʻohe laser i hana ʻia, i kēia manawa, hoʻokomo ʻia kahi hōʻailona optical i kahi hopena. ʻOiai ka lōʻihi o ke alapine o kēia hōʻailona optical kokoke i ke kikowaena spectral o ka laser, e hoʻonui ʻia a hoʻopuka ʻia mai kēlā ʻaoʻao. ʻO kēia ʻanosemiconductor optical amplifierkapa ʻia ʻo Fabry-Perrop type optical amplifier (FP-SLA). Inā hoʻokaʻawale ʻia ka laser ma luna o ka paepae, ʻo ka hoʻokomo ʻana i ka hōʻailona optical mode hoʻokahi nāwaliwali mai kahi hopena, ʻoiai ke alapine o kēia hōʻailona optical i loko o ka spectrum o kēia laser multimode, e hoʻonui ʻia ka hōʻailona optical a laka ʻia i kekahi ʻano. Ua kapa ʻia kēia ʻano amplifier optical he injaction-locked type amplifier (IL-SLA). Inā ua uhi ʻia nā ʻaoʻao ʻelua o ka laser semiconductor i ke aniani a i ʻole e hoʻoheheʻe ʻia me kahi ʻāpana o ke kiʻi anti-reflection, e liʻiliʻi loa kona emissivity a ʻaʻole hiki ke hana i kahi lua resonant Fabry-Perrow, i ka wā e hele ai ka hōʻailona optical i ka papa alakaʻi nalu hana, e hoʻonui ʻia i ka wā e hele ana. No laila, ua kapa 'ia kēia 'ano o ka mea ho'onui 'opika he 'ano hawewe hele 'ana (TW-SLA), a ua hō'ike 'ia kona 'ano ma kēia ki'i. No ka mea, ʻo ka bandwidth o ka ʻano hawewe hele ʻana he ʻekolu mau kauoha o ka nui ma mua o ko ka Fabry-Perot type amplifier, a hiki i kāna bandwidth 3dB ke hiki i ka 10THz, hiki iā ia ke hoʻonui i nā hōʻailona optical o nā alapine like ʻole a he mea hoʻohiki maikaʻi loa.

2. Uuna-doped fiber amplifier: Aia ʻekolu ʻāpana: ʻO ka mua he fiber doped me ka lōʻihi mai kekahi mau mika a i ʻumi mau mika. ʻO kēia mau mea haumia he mau ion honua kakaikahi, ka mea i hana i ka mea hoʻoulu laser; ʻO ka lua, ʻo ia ka puna puna laser, kahi e hāʻawi ai i ka ikehu o nā hawewe kūpono e hoʻohauʻoli i nā ion honua laha ʻole doped i mea e hoʻokō ai i ka hoʻonui ʻana o ka mālamalama. ʻO ke kolu, ʻo ia ka mea hoʻohui, ka mea e hiki ai i ke kukui pāpaʻi a me ke kukui hōʻailona ke hui pū i loko o ka doped optical fiber activating material. ʻO ke kumu hana o ka fiber amplifier ua like loa me ka laser solid state. Hoʻokumu ia i kahi mokuʻāina hoʻohele helu huahelu i hoʻohuli ʻia i loko o ka mea i hoʻāla ʻia i ka laser a hoʻoulu i ka radiation hoʻoulu ʻia. No ka hoʻokumu ʻana i kahi mokuʻāina hoʻoili hoʻololi hoʻololi paʻa, ʻoi aku ma mua o ʻelua mau pae ikehu e pono ke komo i ka hoʻololi ʻike, maʻamau ʻekolu pae a me ʻehā mau ʻōnaehana, me ka hoʻolako mau ʻana o ka ikehu mai kahi puna puna. I mea e hāʻawi maikaʻi ai i ka ikehu, pono e ʻoi aku ka pōkole o ka nalu o ka photon pauma ma mua o ka photon laser, ʻo ia hoʻi, ʻoi aku ka nui o ka ikehu o ka photon pamu ma mua o ka photon laser. Eia kekahi, hoʻokumu ka resonant cavity i kahi manaʻo maikaʻi, a no laila hiki ke hoʻokumu ʻia kahi amplifier laser.

3. Nā mea hoʻonui fiber nonlinear: Hāʻule nā ​​mea hoʻonui fiber nonlinear a me nā mea hoʻonui fiber erbium ma lalo o ka māhele o ka fiber amplifiers. Eia nō naʻe, hoʻohana ka mea mua i ka hopena nonlinear o nā quartz fibers, aʻo ka mea hope e hoʻohana i nā fibers quartz erbium-doped e hana i ka media ikaika. E hoʻoulu ʻia nā hopena o ka quartz optical maʻamau ma lalo o ka hana o ke kukui pahū ikaika o nā lōʻihi hawewe kūpono, e like me ka hoʻoulu ʻia ʻana o Raman scattering (SRS), hoʻoulu ʻia ʻo Brillouin scattering (SBS), a me nā hopena hoʻohuihui ʻehā. Ke hoʻouna ʻia ka hōʻailona ma ka fiber optical me ke kukui pump, hiki ke hoʻonui ʻia ke kukui hōʻailona. No laila, hana lākou i nā fiber Raman amplifiers (FRA), Brillouin amplifiers (FBA), a me parametric amplifiers, ʻo ia mau mea a pau i puʻunaue ʻia nā fiber amplifier.

Hōʻuluʻulu manaʻo: ʻO ke kuhikuhi hoʻomohala maʻamau o nā amplifiers optical a pau ka loaʻa kiʻekiʻe, ka mana hoʻopuka kiʻekiʻe, a me ke kiʻi haʻahaʻa haʻahaʻa.