Iiamplifiers ze-Optical kwintsimi yonxibelelwano lwefiber optical

Iiamplifiers ze-Optical kwintsimi yonxibelelwano lwefiber optical

An iamplifier yamehlosisixhobo esenza imiqondiso yokukhanya. Kwintsimi yonxibelelwano lwefiber optical, ikakhulu idlala iindima ezilandelayo: 1. Ukuphucula kunye nokukhulisa amandla optical. Ngokubeka i-amplifier optical ekupheleni kwangaphambili kwe-transmitter optical, amandla optical angena kwifiber anganyuswa. 2. Ukwandiswa kwe-relay kwi-Intanethi, ukubuyisela iiRepeaters ezikhoyo kwiinkqubo zonxibelelwano lwefiber optical; 3. Ukwandiswa kwangaphambili: Ngaphambi kokuba i-photodetector ekupheleni kokufumana, isignali yokukhanya ebuthathaka ikhuliswe kwangaphambili ukunyusa uvakalelo lokufumana.

Okwangoku, iiamplifiers ze-Optical ezamkelwe kunxibelelwano lwe-Optical fiber ziquka ezi ntlobo zilandelayo: 1. Semiconductor optical amplifier (Iamplifier ye-SOA Optical)/Semiconductor laser amplifier (SLA Optical amplifier); 2. Izikhulisi zokhuliso zefayibha ezinqabileyo zomhlaba, ezifana nezandisi zefiber-doped fiber (Iamplifier ye-EDFA Optical), njl. njl. 3. Izandisi zefayibha ezingangqamaniyo, ezifana nezandisi ze-fiber Raman, njl njl. Oku kulandelayo yintshayelelo emfutshane ngokulandelelanayo.

I-1.I-Semiconductor optical amplifiers: Ngaphantsi kweemeko ezahlukeneyo zesicelo kunye nesiphelo esicacileyo sokuphela, i-lasemiconductor lasers inokuvelisa iintlobo ezahlukeneyo ze-semiconductor optical amplifiers. Ukuba umqhubi we-laser we-semiconductor uphantsi kunomda wayo, oko kukuthi, akukho laser eveliswayo, ngeli xesha, isignali ye-optical ifakwe kwelinye icala. Ngethuba nje ukuphindaphinda kwesi siginali ye-optical ikufuphi neziko le-spectral ye-laser, iya kwandiswa kwaye iphume kwelinye icala. Olu hlobosemiconductor optical amplifieribizwa ngokuba yiFabry-Perrop yodidi lweamplifier yamehlo (FP-SLA). Ukuba i-laser inocalucalulo ngaphezulu komgubasi, igalelo lesignali ye-optical ebuthathaka ye-single-mode ukusuka kwelinye icala, okoko nje ukuphindaphinda kwesi siginali ye-optical ingaphakathi kwebala le-laser ye-multimode, isiginali ye-optical iya kwandiswa kwaye itshixiwe kwindlela ethile. Olu hlobo lweamplifier yamehlo lubizwa ngokuba yi-injaction-locked type amplifier (IL-SLA). Ukuba iziphelo ezibini ze-laser ye-semiconductor zifakwe kwisibuko-zigqunywe okanye zikhutshwe ngomqolo wefilimu echasene ne-reflection, okwenza ukukhutshwa kwayo kuncinci kakhulu kwaye kungakwazi ukwenza i-Fabry-Perrow resonant cavity, xa umqondiso we-optical udlula kumaleko we-waveguide esebenzayo, uya kwandiswa ngelixa uhamba. Ngoko ke, olu hlobo lweamplifier optical lubizwa ngokuba yi-wave wave type optical amplifier (TW-SLA), kwaye isakhiwo sayo siboniswa kulo mfanekiso ulandelayo. Ngenxa yokuba i-bandwidth yohlobo lokuhamba lwamaza optical amplifier luyi-odolo ezintathu zobukhulu ezinkulu kunezo zohlobo lwe-Fabry-Perot i-amplifier, kwaye i-bandwidth yayo ye-3dB inokufikelela kwi-10THz, inokwandisa imiqondiso ye-optical ye-frequencies eyahlukeneyo kwaye i-optical amplifier ethembisa kakhulu.

2. I-Bait-doped fiber amplifier: Iquka amacandelo amathathu: Eyokuqala yintsinga ene-doped enobude obusuka kwiimitha ezininzi ukuya kwishumi leemitha. Obu kungcola ubukhulu becala zii-ion zomhlaba ezinqabileyo, ezenza i-laser activation material; Okwesibini ngumthombo wempompo yelaser, ebonelela ngamandla obude obufanelekileyo bobude obufanelekileyo ukuchulumancisa iiyoni zomhlaba ezinqabileyo ezidakiweyo ukuze kuphunyezwe ukukhulisa ukukhanya. Eyesithathu yi-coupler, eyenza ukuba ukukhanya kwempompo kunye nokukhanya komqondiso ukudibanisa kwi-doped optical fiber activating material. Umgaqo wokusebenza we-fiber amplifier ufana kakhulu naleyo ye-laser-state eqinile. Ibangela ukuguqulwa kwemeko yokuhanjiswa kwenombolo yesuntswana ngaphakathi kwesixhobo se-laser-activated kwaye ivelise i-radiation evuselelweyo. Ukudala indawo ezinzileyo yokusabalalisa inombolo ye-particle inversion, ngaphezu kwamanqanaba amabini amandla kufuneka abandakanyeke kwinguqu ye-optical, ngokuqhelekileyo inqanaba lesithathu kunye neenkqubo ezine ezine, kunye nokunikezelwa kwamandla okuqhubekayo ukusuka kumthombo wempompo. Ukuze unikeze amandla ngokufanelekileyo, ubude be-pump photon kufuneka bube bufutshane kune-photon ye-laser, oko kukuthi, amandla e-pump photon kufuneka abe mkhulu kune-photon ye-laser. Ngapha koko, i-resonant cavity yenza ingxelo entle, kwaye ke iamplifier ye-laser inokwakheka.

3. I-fiber amplifiers engabonakaliyo: Zombini i-fiber amplifiers engabonakaliyo kunye ne-erbium fiber amplifiers ziwela phantsi kwecandelo le-fiber amplifiers. Nangona kunjalo, yangaphambili isebenzisa isiphumo esingahambelaniyo se-quartz fibers, ngelixa le yokugqibela isebenzisa i-erbium-doped quartz fibers ukuze isebenze kwimidiya esebenzayo. I-quartz optical fibers eqhelekileyo iya kuvelisa iziphumo ezinamandla ezingenakulinganiswa phantsi kwesenzo sempompo eqinile yokukhanya kwamaza afanelekileyo, njenge-stimulated Raman scattering (SRS), i-Brillouin scattering (SBS), kunye nemiphumo yokuxuba amaza amane. Xa umqondiso uhanjiswa kunye ne-fiber optical kunye nokukhanya kwempompo, ukukhanya komqondiso kunokwandiswa. Ngaloo ndlela, benza i-fiber Raman amplifiers (FRA), iBrillouin amplifiers (FBA), kunye ne-parametric amplifiers, zonke zisasazwa i-fiber amplifiers.

Isishwankathelo: Umkhombandlela wophuhliso oqhelekileyo wazo zonke iiamplifiers zamehlo kukuzuza okuphezulu, amandla aphumayo aphezulu, kunye nenani eliphantsi lengxolo.