L-band Edfa replifier tsarin fasaha

Edfa tana amfani da fiber na erbium ion azaman riba, wanda ke haifar da jujjuyawar jama'a a ƙarƙashin hasken famfo. Yana da kyau ya motsa farfadowa mai tsadewa a ƙarƙashin shigar da siginar sigina.
Erbium ions suna da matakan makamashi uku. Suna kan matakin samar da makamashi, E1, lokacin da basu da farin ciki da kowane haske. Lokacin da zaren yana farin ciki da farin ciki ta hanyar Pumcewar wutar lantarki Laser, barbashi a cikin kasa samun makamashi da sauyawa zuwa matakin makamashi mafi girma. Irin wannan sauyawa daga E3 zuwa E3, saboda barbashi bashi da ƙarfi a matakin makamashi na E3, zai hanzarta zuwa ga tsarin wucewa na E2 a cikin tsari mara karfi. A wannan matakin makamashi, barbashi yana da dogon rayuwa rayuwa. Saboda cigaba mai farin ciki na hasken hasken famfo, yawan barbashi a matakin makamashi na E2 zai ci gaba da ƙaruwa, kuma adadin barbashi a matakin E1 Prodobe zai ƙaru. Ta wannan hanyar, yawan masu rarraba alfarma sun tabbata a cikin fiber na erbium, da kuma yanayin koyan amplication na fitarwa suna samuwa.
When the input signal photon energy E=hf is precisely equal to the energy level difference between E2 and E1, E2-E1=hf, the particles in the metastable state will transition to the ground state E1 in the form of stimulated radiation. Radadi da shigarwar phothon a cikin siginar iri ɗaya ne ga photican hoto, don haka yana ƙaruwa da siginar pictical ta zama mai ƙarfi na fiber.

2. Shafin Tsarin Tsarin Titin Gabatarwa
2.1. Schematic Schmatic na zane na FIF na fiber na fiber replifier tsarin kamar haka: