Ụkpụrụ na itinye n'ọrụ nkeEriri amplifier nke EDFA erbium-doped
Nhazi bụ isi nkeEDFANgwa ngwa eriri erbium-doped, nke mejupụtara ya bụ ihe na-arụ ọrụ nke ọma (ọtụtụ mita ogologo eriri quartz doped, dayameta isi 3-5 microns, ntinye doping (25-1000) x10-6), isi iyi ọkụ mgbapụta (990 ma ọ bụ 1480nm LD), njikọ optical na ihe na-ekewapụ anya. Ìhè mgbaàmà na ọkụ mgbapụta nwere ike ịgbasa n'otu ntụziaka (co-pumping), ntụziaka nke ọzọ (mgbapụta azụ), ma ọ bụ ntụziaka abụọ ahụ (mgbapụta abụọ) na eriri Erbium. Mgbe a gbanye ọkụ mgbaàmà na ọkụ mgbapụta n'ime eriri erbium n'otu oge, ion erbium na-akpali akpali ruo ọkwa ike dị elu (usoro ọkwa atọ) n'okpuru ọrụ nke ọkụ mgbapụta, ma gbajie ngwa ngwa ruo ọkwa metastable. Mgbe ọ laghachiri na ọnọdụ ala n'okpuru ọrụ nke ọkụ mgbaàmà ihe merenụ, a na-ewepụta photon kwekọrọ na ọkụ mgbaàmà, nke mere na a na-eme ka mgbaàmà ahụ dịkwuo elu. Ọwa ya nke a na-akpọ amplified spontent emission (ASE) nwere nnukwu bandwit (ruo 20-40nm) ma nwee elu abụọ kwekọrọ na 1530nm na 1550nm n'otu n'otu.
Isi uru nkeAmplifier EDFAbụ nnukwu uru, nnukwu bandwidth, ike mmepụta dị elu, arụmọrụ mgbapụta dị elu, obere mfu ntinye, na enweghị mmetụta na steeti polarization.
Ụkpụrụ ọrụ nke amplifier eriri erbium-doped
Ngwa amplifier eriri Erbium (nke a na-akpọ Erbium-doped fiber amplifier)Ngwa ngwa anya EDFA） bụ isi ihe mejupụtara eriri erbium-doped (ihe dị ka mita 10-30 n'ogologo) na isi iyi ọkụ mgbapụta. Ụkpụrụ ọrụ bụ na eriri erbium-doped na-emepụta radieshon mkpali n'okpuru ọrụ nke isi iyi ọkụ a pịrị apị (ogologo wavelength 980nm ma ọ bụ 1480nm), ìhè a na-enwu enwu na-agbanwe mgbe mgbanwe nke mgbaàmà ọkụ ntinye, nke dabara na ime ka akara ọkụ ntinye dịkwuo elu. Nsonaazụ ya na-egosi na uru nke amplifier eriri Erbium-doped na-abụkarị 15-40db, enwere ike ịbawanye anya relay site na ihe karịrị 100km. Ya mere, ndị mmadụ enweghị ike ịjụ: gịnị mere ndị ọkà mmụta sayensị ji chee echiche iji doped erbium na amplifier eriri iji mee ka ike nke ebili mmiri ọkụ dịkwuo elu? Anyị maara na erbium bụ ihe dị ụkọ ụwa, ihe dị ụkọ ụwa nwere njirimara nhazi pụrụ iche ha. Ejirila doping ihe dị ụkọ ụwa na ngwaọrụ anya ruo ogologo oge iji melite arụmọrụ nke ngwaọrụ anya, yabụ nke a abụghị ihe mberede. Tinyere nke ahụ, gịnị mere e ji ahọrọ ogologo ebili mmiri nke isi iyi ọkụ mgbapụta na 980nm ma ọ bụ 1480nm? N'ezie, ogologo ebili mmiri nke isi iyi ọkụ mgbapụta nwere ike ịbụ 520nm, 650nm, 980nm, na 1480nm, mana omume egosila na ogologo ebili mmiri nke isi iyi ọkụ mgbapụta 1480nm bụ nke kachasị elu, nke na-esochi ogologo ebili mmiri nke isi iyi ọkụ mgbapụta 980nm.
Ọdịdị anụ ahụ
Nhazi bụ isi nke amplifier eriri erbium-doped (EDFA Optical Amplifier). E nwere ihe na-ekewapụ ihe na njedebe ntinye na njedebe mmepụta, ebumnuche bụ ime ka akara ngosi anya na-agafe otu ụzọ. Ihe na-akpali mgbapụta ahụ nwere ogologo ebili mmiri nke 980nm ma ọ bụ 1480nm ma ejiri ya nye ike. Ọrụ nke njikọ ahụ bụ ijikọ akara ngosi anya ntinye na ọkụ mgbapụta ahụ na eriri erbium-doped, ma nyefee ike nke ọkụ mgbapụta ahụ na akara ngosi anya ntinye site na ọrụ nke eriri erbium-doped, ka e wee nweta mmụba ike nke akara ngosi anya ntinye. Iji nweta ike ngosipụta dị elu na obere mkpọtụ, amplifier eriri Erbium-doped ejiri mee ihe na-anabata usoro nke isi mmalite mgbapụta abụọ ma ọ bụ karịa nwere ndị na-ekewapụ ihe n'etiti iji kewapụ onwe ha. Iji nweta usoro uru sara mbara ma dị larịị, a na-agbakwunye nzacha na-eme ka uru dị larịị.
EDFA nwere akụkụ ise bụ isi: eriri Erbium-doped (EDF), njikọ anya (WDM), ihe na-ekewapụ optical (ISO), nzacha anya, na ihe na-enye mgbapụta. Isi mmalite mgbapụta a na-ejikarị eme ihe gụnyere 980nm na 1480nm, isi mmalite mgbapụta abụọ a nwekwara arụmọrụ mgbapụta dị elu ma ejiri ha karịa. Oke mkpọtụ isi mmalite ọkụ mgbapụta 980nm dị ala; Isi mmalite ọkụ mgbapụta 1480nm nwere arụmọrụ mgbapụta dị elu ma nwee ike inweta ike mmepụta buru ibu (ihe dị ka 3dB karịa isi mmalite ọkụ mgbapụta 980nm).
uru
1. Ogologo ogologo ọrụ kwekọrọ na windo mbelata kacha nta nke eriri otu ụdị.
2. Ọ dị oke mma ijikọ ya. N'ihi na ọ bụ eriri amplifier, ọ dị mfe ijikọ ya na eriri nnyefe.
3. Ike mgbanwe ike dị elu. Isi EDF dị obere karịa nke eriri nnyefe, a na-ebufekwa ọkụ mgbaàmà na ọkụ mgbapụta n'otu oge na EDF, yabụ ikike anya dị oke elu. Nke a na-eme ka mmekọrịta dị n'etiti ìhè na etiti uru Er ion jupụta nke ukwuu, yana ogologo kwesịrị ekwesị nke eriri erbium-doped, yabụ arụmọrụ ntụgharị nke ike ìhè dị elu.
4. Uru dị elu, obere mkpọtụ, nnukwu ike mmepụta, obere mkparịta ụka n'etiti ọwa.
5. Àgwà uru kwụsiri ike: EDFA anaghị emetụta okpomọkụ, uru enweghịkwa njikọ dị nta na polarization.
6. Njirimara uru ahụ anaghị adabere na ọnụego bit sistemụ na usoro data.
mmejọ
1. Mmetụta na-abụghị nke ahịrị: EDFA na-eme ka ike anya dịkwuo elu site n'ịbawanye ike anya a gbanyere n'ime eriri ahụ, mana ibu ka mma. Mgbe ike anya mụbara ruo n'ókè ụfọdụ, a ga-emepụta mmetụta na-abụghị nke ahịrị nke eriri anya. Ya mere, mgbe a na-eji amplifiers eriri anya, a ga-elebara uru nke ijikwa ike anya eriri anya nke otu ọwa na-abata anya.
2. A na-edozi oke ebili mmiri uru: oke ebili mmiri ọrụ nke EDFA-band C bụ 1530nm ~ 1561nm; Oke ebili mmiri ọrụ nke EDFA-band L bụ 1565nm ~ 1625nm.
3. Bandwit uru na-adịghị nhata: Bandwit uru nke amplifier eriri EDFA erbium-doped dị oke obosara, mana uru nke EDF n'onwe ya adịghị larịị. A ghaghị iji nzacha gain flattening mee ka uru ahụ dị larịị na sistemụ WDM.
4. Nsogbu mmụba ọkụ: Mgbe ụzọ ọkụ ahụ dị nkịtị, ìhè mgbaama ahụ na-ebuga ion erbium nke ọkụ mgbapụta ahụ kpaliri, si otú a na-eme ka ìhè mgbaama ahụ dịkwuo elu. Ọ bụrụ na a kụrie ọkụ ntinye ahụ, n'ihi na ion erbium metastable na-aga n'ihu na-agbakọta, ozugbo e weghachiri ntinye ọkụ mgbaama ahụ, ike ga-awụlikwa elu, na-ebute mmụba ọkụ.
5. Ihe ngwọta maka mmụba ọkụ bụ imezu ọrụ mbelata ọkụ anya akpaka (APR) ma ọ bụ ọrụ gbanyụọ ọkụ anya akpaka (APSD) na EDFA, ya bụ, EDFA na-ebelata ike ahụ na akpaghị aka ma ọ bụ gbanyụọ ike ahụ na akpaghị aka mgbe enweghị ọkụ ntinye, si otú a na-egbochi ihe omume mmụba ọkụ ahụ.
Ụdị ngwa
1. A na-eji ihe nkwado nkwalite (booster Amplifier) eme ka ike nke ọtụtụ akara ogologo ebili mmiri dịkwuo elu mgbe ebili mmiri nkwalite gasịrị, wee ziga ha. Ebe ọ bụ na ike mgbaàmà mgbe ebili mmiri nkwalite na-abụkarị nnukwu, mkpọtụ na uru nke ihe nkwado ike adịghị elu nke ukwuu. Nwere ike mmepụta dị ukwuu.
2. A na-eji ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe ghara ịdị mma mgbe niile, ọ na-achọkarị obere mkpọtụ na nnukwu ike anya.
3. Mgbakwunye Tupu: Tupu onye na-ekewapụ ihe na mgbe a gbasịrị ihe nrịbama ahịrị, a na-eji ya eme ka mgbaama ahụ dịkwuo elu ma melite mmetụta nke onye na-anata ihe (ọ bụrụ na nha mgbaàmà-na-mkpọtụ anya (OSNR) emezu ihe achọrọ, ike ntinye buru ibu nwere ike igbochi mkpọtụ nke onye na-anata ihe n'onwe ya ma melite mmetụta nnata), na ndeksi mkpọtụ ahụ pere mpe nke ukwuu. Enweghị nnukwu ihe achọrọ na ike mmepụta.
Oge ozi: Maachị-17-2025