Ma amplifiers e optical mumunda wekutaurirana kwe optical fiber
An amplifier yemazisomudziyo unowedzera masaini ekuona. Mundima yekutaurirana nefiber ye optical, inonyanya kuita mabasa anotevera: 1. Kuvandudza nekuwedzera simba rekuona. Nekuisa optical amplifier kumberi kwe transmitter ye optical, simba rekuona rinopinda mufiber rinogona kuwedzerwa. 2. Kuwedzerwa kwe relay online, kuchitsiva maRepeaters aripo mumasisitimu ekutaurirana nefiber ye optical; 3. Kuwedzerwa kwe amplification: Pamberi pe photodetector pamagumo ekugamuchira, chiratidzo chechiedza chisina simba chinowedzerwa kuti chiwedzere kunzwisisika kwekugamuchira.
Parizvino, ma amplifiers eOptical anoshandiswa mukukurukurirana kweOptical fiber anosanganisira marudzi anotevera: 1. Semiconductor optical amplifier (SOA Optical amplifier)/Semiconductor laser amplifier (SLA Optical amplifier); 2. Ma amplifier efaibha asina kujairika ane doped earth-doped, akadai sema amplifier efaibha ane doped yebait (EDFA Optical amplifier), nezvimwewo. 3. Ma-amplifiers asina kurongeka, akadai se-amplifiers e-fiber Raman, nezvimwewo. Inotevera ipfupiso yakateerana.
1. MaSemiconductor optical amplifiers: Pasi pemamiriro akasiyana ekushandiswa uye ne end face reflection yakasiyana, semiconductor lasers inogona kugadzira mhando dzakasiyana dze semiconductor optical amplifiers. Kana driving current ye semiconductor laser yakaderera pane threshold yayo, kureva kuti, hapana laser inogadzirwa, panguva ino, optical signal inopinzwa kune rimwe divi. Chero bedzi frequency ye optical signal iyi iri pedyo ne spectral centre ye laser, ichawedzerwa uye ichabuda kubva kune rimwe divi. Rudzi urwu rweamplifier ye optical ye semiconductorinonzi Fabry-Perrop type optical amplifier (FP-SLA). Kana laser iri pamusoro pemuganhu, iyo isina simba single-mode optical signal input kubva kumucheto mumwe, chero bedzi frequency yeiyi optical signal iri mukati me spectrum yeiyi multimode laser, iyo optical signal ichawedzerwa uye ichakiyiwa kune imwe mode. Rudzi urwu rwe optical amplifier runonzi injection-locked type amplifier (IL-SLA). Kana magumo maviri e semiconductor laser akaputirwa negirazi kana kuti akapwanyika ne layer ye anti-reflection film, zvichiita kuti emissivity yayo ive diki uye isakwanise kugadzira Fabry-Perrow resonant cavity, kana optical signal ichipfuura nepakati pe active waveguide layer, ichawedzerwa pakufamba. Saka, iyi optical amplifier inonzi traveling wave type optical amplifier (TW-SLA), uye chimiro chayo chinoratidzwa mumufananidzo unotevera. Nekuti bandwidth ye traveling wave type optical amplifier yakakura katatu kupfuura yeFabry-Perot type amplifier, uye bandwidth yayo ye3dB inogona kusvika 10THz, inogona kuwedzera masaini e optical ema frequency akasiyana uye i optical amplifier inovimbisa zvikuru.
2. Amplifier yefiber ine bait-doped: Ine zvikamu zvitatu: Chekutanga ifiber ine doped ine hurefu hunotangira pamamita akati wandei kusvika pamamita gumi. Kusvibiswa uku kunonyanya kuve maion earth earth activation, ayo anoumba laser activation material; Chechipiri i laser pump source, iyo inopa simba rema wavelength akakodzera kuti ifadze maion earth earth adimused doped kuitira kuti chiedza chiwedzere kukura. Chechitatu i coupler, iyo inogonesa pombi light nesignal light kuti zvibatane ne doped optical fiber activating material. Musimboti wekushanda we fiber amplifier wakafanana zvikuru newe solid-state laser. Inokonzera reversed particle number distribution state mukati me laser-activated material uye inogadzira stimulated radiation. Kuti igadzire stable particle number inversion distribution state, simba rinodarika maviri rinofanira kunge riripo mu optical transition, kazhinji masystem ane mazinga matatu nemana, ne continuous supply of energy kubva ku pombi source. Kuti ipe simba zvinobudirira, wavelength ye pombi photon inofanira kunge iri pfupi pane ye laser photon, kureva kuti, simba re pombi photon rinofanira kunge rakakura kupfuura re laser photon. Uyezve, nzvimbo ine resonant inoita kuti pave nemhinduro dzakanaka, saka laser amplifier inogona kuumbwa.
3. Ma-amplifiers e-nonlinear fiber: Ma-amplifiers e-nonlinear fiber ne-erbium fiber amplifiers ari pasi pechikamu che-fiber amplifiers. Zvisinei, yekutanga inoshandisa-nonlinear effect ye-quartz fibers, nepo yekupedzisira inoshandisa-erbium-doped quartz fibers kuti ishande pane active media. Ma-oral quartz optical fibers achaita kuti pave ne-nonlinear effects dzakasimba pasi pekushanda kwe-strong pump light ye-wavelengths yakakodzera, yakadai se-stimulated Raman scattering (SRS), stimulated Brillouin scattering (SBS), uye four-wave mixing effects. Kana chiratidzo chikatumirwa pamwe chete ne-optical fiber pamwe chete ne-pomp light, signal light inogona kuwedzerwa. Saka, vanoumba ma-amplifiers e-fiber Raman (FRA), Brillouin amplifiers (FBA), uye parametric amplifiers, ese ari ma-distributed fiber amplifiers.
Pfupiso: Nzira yakajairika yekukura kwema amplifiers ese e optical ndeyekuwedzera kwakanyanya, simba guru rekuburitsa, uye ruzha rushoma.
Nguva yekutumira: Chivabvu-08-2025