Ụkpụrụ na ngwa nkeEDFA erbium-doped eriri amplifier
The isi Ọdịdị nkeEDFAerbium-doped fiber amplifier, nke a na-ejikarị eme ihe na-arụ ọrụ (ọtụtụ mita ogologo doped quartz fiber, core dayameta 3-5 microns, ntinye doping (25-1000) x10-6), mgbapụta ọkụ (990 ma ọ bụ 1480nm LD), onye na-ahụ maka anya anya na onye na-ahụ anya. Ìhè mgbaàmà na ọkụ mgbapụta nwere ike ịgbasa n'otu ụzọ ahụ (ịkọ-pumping), ntụgharị ihu (mgbapụta mgbapụta), ma ọ bụ ụzọ abụọ (bidirectional pumping) na eriri Erbium. Mgbe a na-agbanye ọkụ mgbaàmà na ọkụ mgbapụta n'ime eriri erbium n'otu oge ahụ, erbium ion na-enwe obi ụtọ na ike dị elu (usoro ọkwa atọ) n'okpuru ọrụ nke ọkụ mgbapụta, n'oge na-adịghịkwa anya rere ure na ọkwa metastable. Mgbe ọ laghachiri na ala ala n'okpuru ọrụ nke ọkụ mgbaàmà ahụ merenụ, foton nke kwekọrọ na ọkụ mgbaàmà na-apụta, nke mere na mgbaàmà ahụ na-abawanye. Ụdị ihe dị iche iche a na-eme ka ọ dị elu (ASE) nwere nnukwu bandwit (ruo 20-40nm) ma nwee ọnụ elu abụọ kwekọrọ na 1530nm na 1550nm n'otu n'otu.
Isi uru nkeEDFA amplifierbụ uru dị elu, nnukwu bandwit, ike mmepụta dị elu, nrụpụta mgbapụta dị elu, nkwụsị ntinye dị ala, na enweghị uche na steeti polarization.
Ụkpụrụ ọrụ nke erbium-doped fiber amplifier
Ihe a na-akpọ Erbium-doped fiber amplifier (EDFA Optical AmplifierIhe mejupụtara ya bụ eriri erbium-doped (ihe dịka 10-30m n'ogologo) na isi iyi ọkụ mgbapụta. Ụkpụrụ na-arụ ọrụ bụ na eriri erbium-doped na-emepụta radieshon na-akpali akpali n'okpuru ọrụ nke isi iyi ọkụ na-agbapụta (wavelength 980nm ma ọ bụ 1480nm), na ìhè na-egbuke egbuke na-agbanwe na mgbanwe nke mgbama ọkụ ntinye, nke kwekọrọ na ịgbasa mgbama ọkụ ntinye. Nsonaazụ gosiri na uru nke Erbium-doped fiber amplifier na-abụkarị 15-40db, na ogologo agbagharị nwere ike ịbawanye ihe karịrị 100km. Yabụ, ndị mmadụ enweghị ike ịnyere ma jụọ: gịnị kpatara ndị ọkà mmụta sayensị ji eche iji doped erbium na amplifier fiber na-abawanye ike nke ebili mmiri ọkụ? Anyị maara na erbium bụ ihe na-adịghị ahụkebe nke ụwa, na ihe ndị dị ụkọ n'ụwa nwere njirimara nhazi ha pụrụ iche. A na-eji ihe ndị na-adịghị ahụkebe ụwa eme ihe na ngwa anya ogologo oge iji melite arụmọrụ nke ngwaọrụ anya, yabụ nke a abụghị ihe mberede. Na mgbakwunye, kedu ihe kpatara ahọrọ ogologo ikuku nke isi iyi ọkụ mgbapụta na 980nm ma ọ bụ 1480nm? N'ezie, wavelength nke mgbapụta ìhè isi iyi nwere ike ịbụ 520nm, 650nm, 980nm, na 1480nm, ma omume egosila na wavelength nke 1480nm mgbapụta ìhè isi iyi laser arụmọrụ bụ kasị elu, sochiri wavelength nke 980nm mgbapụta ìhè isi iyi.
Ọdịdị anụ ahụ
Nhazi ntọala nke erbium-doped fiber amplifier (EDFA Optical Amplifier). Enwere onye isolator na njedebe ntinye na njedebe mmepụta, ebumnuche bụ ime ka mgbama ngwa anya na-ebufe otu ụzọ. The mgbapụta exciter nwere a wavelength nke 980nm ma ọ bụ 1480nm na-eji na-enye ike. Ọrụ nke onye na-emekọ ihe bụ ijikọ ihe mgbaàmà ntinye anya na ọkụ mgbapụta n'ime eriri erbium-doped, ma nyefee ike nke ọkụ mgbapụta na ntinye anya mgbama site na omume nke eriri erbium-doped, ka ọ wee ghọta ume ike nke ntinye anya mgbama. Iji nweta ike ngwa anya mmepụta dị elu yana ndenye mkpọtụ dị ala, Erbium-doped fiber amplifier eji eme ihe na-eme ka nhazi nke isi mmalite mgbapụta abụọ ma ọ bụ karịa nwere ndị na-ekewapụta n'etiti iji kewapụ onwe ha. Iji nweta usoro uru bara ụba nke sara mbara na nke dị nro, a na-agbakwunye ihe nzacha na-ekpo ọkụ.
EDFA nwere akụkụ ise: Erbium-doped fiber (EDF), Optical coupler (WDM), anya isolator (ISO), Optical Filter, and Pumping Supply. Isi mmalite mgbapụta a na-ejikarị gụnyere 980nm na 1480nm, ebe mgbapụta abụọ a nwere arụmọrụ mgbapụta dị elu ma jiri ya mee ihe. 980nm mgbapụta ìhè iyi mkpọtụ ọnụọgụ dị ala; Igwe ọkụ mgbapụta 1480nm nwere arụmọrụ mgbapụta dị elu ma nwee ike nweta ike nrụpụta buru ibu (ihe dị ka 3dB dị elu karịa isi iyi ọkụ mgbapụta 980nm).
uru
1. The arụ ọrụ wavelength kwekọrọ na kacha nta attenuation window nke otu-mode eriri.
2. Ịrụ ọrụ njikọ dị elu. N'ihi na ọ bụ eriri ampilifaya, ọ dị mfe ijikọ eriri nnyefe.
3. Ntughari ike dị elu. Isi nke EDF dị ntakịrị karịa nke eriri nnyefe, na ọkụ mgbaàmà na ọkụ mgbapụta na-ebufe n'otu oge na EDF, ya mere ikike anya na-etinye uche nke ukwuu. Nke a na-eme ka mmekọrịta dị n'etiti ìhè na inweta ọkara Er ion zuru oke, tinyere ogologo oge kwesịrị ekwesị nke eriri erbium-doped, ya mere ntụgharị ntụgharị nke ike ọkụ dị elu.
4. Uru dị elu, ụda mkpọtụ dị ala, nnukwu mmepụta ike, obere okwu mkparịta ụka n'etiti ọwa.
5. Njirimara uru kwụsiri ike: EDFA adịghị emetụ n'ahụ okpomọkụ, na uru nwere obere njikọ na polarization.
6. The uru atụmatụ bụ onwe ya nke usoro bit ọnụego na data format.
adịghị ike
1. Mmetụta na-adịghị na ntanetị: EDFA na-eme ka ike anya anya dịkwuo elu site n'ịbawanye ike anya nke a na-agbanye n'ime eriri, ma nke ka mma. Mgbe ike anya na-abawanye ruo n'ókè ụfọdụ, a ga-emepụta mmetụta na-adịghị ahụ anya nke eriri anya. Ya mere, mgbe ị na-eji ngwa anya fiber amplifiers, ekwesịrị ịṅa ntị na uru nke ịchịkwa otu ọwa fiber opikal na-abata.
2. The uru wavelength nso na-obere: ọrụ wavelength nso nke C-band EDFA bụ 1530nm ~ 1561nm; Ogologo ogologo ogologo ọrụ nke L-band EDFA bụ 1565nm ~ 1625nm.
3. Enweghi uru bandwidth: The uru bandwit nke EDFA erbium-doped fiber amplifier dị nnọọ mbara, ma uru ụdịdị nke EDF n'onwe ya adịghị larịị. A ga-anakwere ihe nzacha ihe nzacha iji mee ka uru ahụ dị na sistemụ WDM.
4. Nsogbu ọkụ ọkụ: Mgbe ụzọ ọkụ ahụ dị mma, erbium ions na-enwe obi ụtọ site na ọkụ mgbapụta na-ebufe ya site na ọkụ mgbaàmà, si otú ahụ na-emecha mmụba nke ìhè mgbaàmà. Ọ bụrụ na agbajie ọkụ ntinye, n'ihi na ion erbium metastable na-aga n'ihu na-agbakọ, ozugbo eweghachiri ntinye ọkụ mgbaàmà, ike ga-awụli elu, na-ebute ọkụ ọkụ.
5. Ngwọta maka ịwa ahụ anya bụ ịghọta ọrụ mbelata ike anya ngwa anya (APR) ma ọ bụ arụ ọrụ anya ngwa anya (APSD) na EDFA, ya bụ, EDFA na-ebelata ike na-akpaghị aka ma ọ bụ gbanyụọ ọkụ na-akpaghị aka mgbe enweghị ọkụ ntinye, si otú ahụ na-egbochi ihe omume nke ịwa ahụ.
Ụdị ngwa
1. A na-eji Amplifier booster na-ebuli ike nke ọtụtụ akara ngosi ogologo oge mgbe ebili mmiri dị elu, wee bufee ha. Ebe ọ bụ na ike mgbaama mgbe ebili mmiri na-ebuli elu na-abụkarị nnukwu, nrịbama mkpọtụ na uru nke nkwuputa ike adịchaghị elu. Nwere nnukwu mmepụta ike.
2. Line-amplifier, mgbe Amplifier ike gasịrị, a na-eji oge ụfọdụ akwụghachi ụgwọ nnyefe Line, n'ozuzu na-achọ obere mkpọtụ mkpọtụ na nnukwu ike ngwa anya mmepụta.
3. Pre-Amplifier: Tupu splitter na mgbe a na-amụba akara, a na-eji ya mee ka mgbaàmà ahụ dịkwuo elu ma mee ka mmetụta nke onye na-enweta ya dịkwuo mma (ma ọ bụrụ na akara ngosi anya-na-mkpọtụ (OSNR) na-ezute ihe ndị a chọrọ, ike ntinye buru ibu nwere ike ịkwụsị ụda nke onye nata ya n'onwe ya ma melite mmetụta nke ịnata), na ụda mkpọtụ dị ntakịrị. Enweghị nnukwu ihe achọrọ na ike mmepụta.
Oge nzipu: Mar-17-2025