Optical amplifiers mumunda we optical fiber kutaurirana

Optical amplifiers mumunda we optical fiber kutaurirana

An Optical amplifiermudziyo unokudza zviratidzo zvemaziso. Mundima ye optical fiber communication, inonyanya kutamba mabasa anotevera: 1. Kuwedzera uye kuwedzera simba remaziso. Nekuisa iyo optical amplifier kumucheto kumberi kweiyo optical transmitter, iyo optical simba inopinda mufiber inogona kuwedzerwa. 2. Online relay amplification, kutsiva iripo Repeaters mune optical faibha kutaurirana masisitimu; 3. Preamplification: Pamberi pefotodetector pamagumo ekugamuchira, chiratidzo chisina simba chechiedza chinofanowedzerwa kuti chiwedzere kunzwisiswa kwekugamuchira.

Parizvino, maOptical amplifiers anogamuchirwa muOptical fiber communication anonyanya kusanganisira anotevera marudzi: 1. Semiconductor optical amplifier (SOA Optical amplifier)/Semiconductor laser amplifier (SLA Optical amplifier); 2. Kashoma pasi-doped fiber amplifiers, senge chirauro-doped fiber amplifiers (EDFA Optical amplifier), nezvimwewo 3. Nonlinear fiber amplifiers, zvakadai sefiber Raman amplifiers, nezvimwewo. Izvi zvinotevera sumo pfupi maererano.

1.Semiconductor optical amplifiers: Pasi pemamiriro akasiyana-siyana ekushandiswa uye nekusiyana kwakasiyana-siyana kutaridzika kwechiso, semiconductor lasers inogona kubudisa marudzi akasiyana-siyana e semiconductor optical amplifiers. Kana iyo yekutyaira ikozvino ye semiconductor laser yakadzikira pane chikumbaridzo chayo, ndiko kuti, hapana laser inogadzirwa, panguva ino, chiratidzo chemaziso chinoiswa kune imwe mugumo. Chero bedzi kuwanda kweiyi chiratidzo chemaziso chiri padyo nenzvimbo yekuona yelaser, inokwidziridzwa uye kubuda kubva kune imwe mugumo. Rudzi urwusemiconductor optical amplifierinonzi Fabry-Perrop mhando optical amplifier (FP-SLA). Kana iyo laser yakarerekera pamusoro pechikumbaridzo, iyo isina kusimba imwe-modhi optical siginecha yekuisa kubva kune imwe mugumo, sekureba iyo frequency yeiyi chiratidzo chemaziso chiri mukati meiyo spectrum yeiyi multimode laser, chiratidzo chemaziso chinokwidziridzwa uye kukiyiwa kune imwe nzira. Iri rudzi rweoptical amplifier inonzi ijaction-locked type amplifier (IL-SLA). Kana iyo migumo miviri ye semiconductor laser yakavharwa-yakanamirwa kana kuputika neyakagadzika ye-anti-reflection firimu, ichiita kuti kubuda kwayo kuve kudiki uye kusakwanisa kuumba Fabry-Perrow resonant cavity, kana iyo optical chiratidzo ichipfuura nepakati inoshanda waveguide layer, inowedzerwa pakufamba. Naizvozvo, iyi mhando yeoptical amplifier inonzi yekufamba wave type optical amplifier (TW-SLA), uye chimiro chayo chinoratidzwa mumufananidzo unotevera. Nekuti bandwidth yeanofamba wave rudzi optical amplifier maodha matatu ehukuru kupfuura iyo yeFabry-Perot mhando amplifier, uye 3dB bandwidth yayo inogona kusvika 10THz, inogona kukwidziridza masaini emeso eakasiyana mafrequency uye inovimbisa zvikuru yemeso amplifier.

2. Bait-doped fiber amplifier: Iine zvikamu zvitatu: Chekutanga idoped fiber ine urefu hunobva pamamita akawanda kusvika kumakumi emamita. Izvi zvitsvina zvinonyanya kushoma pasi ion, iyo inoumba iyo laser activation zvinhu; Yechipiri ndiyo laser pombi sosi, iyo inopa simba reakakodzera wavelengths kufadza iyo doped isingawanzo pasi ion kuitira kuti uwane kukwidziridzwa kwechiedza. Yechitatu ndeye coupler, iyo inogonesa mwenje wepombi uye chiratidzo chemwenje kuti varoorane mune doped optical fiber activating material. Nheyo yekushanda yefiber amplifier yakafanana zvakanyanya neiyo yakasimba-state laser. Iyo inokonzeresa yakadzoserwa chidimbu nhamba yekugovera mamiriro mukati meiyo laser-activated zvinhu uye inogadzira inosimudzira radiation. Kugadzira yakagadzikana particle inversion kugovera mamiriro, anopfuura maviri masimba masimba anofanirwa kubatanidzwa mukushanduka kwemaziso, kazhinji-nhanho-nhanho uye mana-nhanho masisitimu, nekuenderera kwekupa kwesimba kubva kune pombi sosi. Kuti upe simba zvinobudirira, wavelength yepombi photon inofanira kunge yakapfupika kupfuura iyo ye laser photon, kureva kuti, simba repombi photon rinofanira kuva rakakura kudarika re laser photon. Uyezve, iyo resonant cavity inoumba mhinduro yakanaka, uye nekudaro laser amplifier inogona kuumbwa.

3. Nonlinear fiber amplifiers: Zvose zvisingabatsiri fiber amplifiers uye erbium fiber amplifiers zvinowira pasi peboka re fiber amplifiers. Nekudaro, yekutanga inoshandisa iyo isiri-linear mhedzisiro yequartz fibers, nepo yekupedzisira inoshandisa erbium-doped quartz fiber kuita pane inoshanda midhiya. Ordinary quartz optical fibers ichagadzira yakasimba nonlinear mhedzisiro pasi pechiito chepombi yakasimba chiedza cheavelengths akakodzera, senge yakakurudzirwa Raman scattering (SRS), yakakurudzira Brillouin scattering (SBS), uye mana-wave mixing effects. Kana chiratidzo chacho chichiendeswa pamwe chete nefiber optical pamwe chete nechiedza chepombi, chiedza chechiratidzo chinogona kukwidziridzwa. Nekudaro, ivo vanogadzira fiber Raman amplifiers (FRA), Brillouin amplifiers (FBA), uye parametric amplifiers, ese ayo akagoverwa fiber amplifiers.

Pfupiso: Iyo yakajairwa kusimudzira nzira yeese optical amplifiers kuwana yakakwira, yakakwira kubuda simba, uye yakaderera ruzha nhamba.