Iji gboo mkpa ndị mmadụ na-enwe maka ozi, ọsọ nnyefe nke sistemụ nkwukọrịta eriri optical na-amụba kwa ụbọchị. Netwọk nkwukọrịta optical n'ọdịnihu ga-etolite gaa na netwọk nkwukọrịta eriri optical nke nwere ọsọ dị elu, ikike dị ukwuu, anya dị ogologo, na arụmọrụ dị elu. Ihe nnyefe dị oke mkpa. Ihe nnyefe mgbaàmà optical dị elu bụ nke laser nke na-emepụta ihe nnyefe optical, ngwaọrụ na-emepụta ihe mgbaàmà eletriki, na ihe nhazi electro-optical dị elu nke na-agbanwe ihe nnyefe optical. Ma e jiri ya tụnyere ụdị modulators mpụga ndị ọzọ, ihe modulators electro-optical lithium niobate nwere uru nke ugboro ọrụ sara mbara, nkwụsi ike dị mma, oke mkpochapu dị elu, arụmọrụ ọrụ kwụsiri ike, ọnụego modulation dị elu, obere chirp, njikọ dị mfe, teknụzụ mmepụta tozuru oke, wdg. A na-ejikarị ya eme ihe n'ọtụtụ ebe na sistemụ nnyefe optical dị elu, ikike buru ibu, na ogologo anya.
Voltaji ọkara-ebili bụ ihe dị oke mkpa na nhazi anụ ahụ nke modulator electro-optic. Ọ na-anọchite anya mgbanwe na voltaji bias nke kwekọrọ na ike ọkụ mmepụta nke modulator electro-optic site na nke kacha nta ruo na nke kachasị. Ọ na-ekpebi modulator electro-optic nke ukwuu. Otu esi atụ voltaji ọkara-ebili nke modulator electro-optic nke ọma na ngwa ngwa dị oke mkpa maka imeziwanye arụmọrụ ngwaọrụ ahụ na imeziwanye arụmọrụ nke ngwaọrụ ahụ. Voltaji ọkara-ebili nke modulator electro-optic gụnyere DC (ọkara-ebili
voltaji ọkara-ebili (voltaji na rediofrequency). Ọrụ mbufe nke electro-optic modulator bụ dịka ndị a:
N'ime ha bụ ike anya nke mmepụta nke electro-optic modulator;
Ọ bụ ike anya ntinye nke modulator;
Ọ bụ ihe na-efunahụ ntinye nke ihe na-eme ka electro-optic modulator dị;
Usoro ndị dị ugbu a maka ịtụ voltaji ọkara-ebili gụnyere usoro mmepụta uru dị oke elu na ụzọ okpukpu abụọ ugboro ugboro, nke nwere ike ịtụ voltaji ọkara-ebili kpọmkwem (DC) na voltaji ọkara-ebili redio (RF) nke modulator, n'otu n'otu.
Tebụl 1 Ntụnyere nke ụzọ nnwale voltaji ọkara ebili mmiri abụọ
| Usoro uru dị oke elu | Usoro okpukpu abụọ ugboro ugboro | |
| Ngwa ụlọ nyocha | Inye ọkụ eletrik laser Ihe na-eme ka a nwalee ike nke ihe na-eme ka ike gwụ Ike DC a na-agbanwe agbanwe ±15V Mita ike anya | Isi iyi ọkụ laser Ihe na-eme ka a nwalee ike nke ihe na-eme ka ike gwụ Ike DC a na-agbanwe agbanwe Oscilloscope isi iyi mgbaàmà (Nlekọta DC) |
| oge nnwale | Nkeji 20() | Nkeji 5 |
| Uru nnwale | dị mfe imezu | Nnwale ziri ezi Nwere ike nweta voltaji ọkara-ebili DC na voltaji ọkara-ebili RF n'otu oge |
| ọghọm nnwale | Ogologo oge na ihe ndị ọzọ, ule ahụ ezighi ezi Nnwale onye njem ozugbo DC ọkara-ebili voltaji | Ogologo oge Ihe ndị dị ka nnukwu njehie ikpe nke na-agbagọ usoro ebili mmiri, wdg., ule ahụ ezighi ezi |
Ọ na-arụ ọrụ dịka ndị a:
(1) Usoro uru dị oke oke
A na-eji usoro uru dị oke elu atụ voltaji ọkara-ebili DC nke modulator electro-optic. Nke mbụ, na-enweghị akara ngosi mgbanwe, a na-enweta usoro ọrụ nnyefe nke modulator electro-optic site na ịtụ voltaji bias DC na mgbanwe ike ọkụ mmepụta, na site na usoro ọrụ nnyefe Chọpụta isi uru kachasị na isi uru kacha nta, wee nweta ụkpụrụ voltaji DC kwekọrọ Vmax na Vmin n'otu n'otu. N'ikpeazụ, ihe dị iche n'etiti ụkpụrụ voltaji abụọ a bụ voltaji ọkara-ebili Vπ=Vmax-Vmin nke modulator electro-optic.
(2) Usoro ugboro abụọ ugboro ugboro
Ọ na-eji usoro okpukpu abụọ ugboro ugboro iji tụọ voltaji ọkara RF nke modulator electro-optic. Tinye kọmputa DC bias na mgbaàmà modulation AC na modulator electro-optic n'otu oge iji gbanwee voltaji DC mgbe agbanwere ike ọkụ mmepụta gaa na uru kachasị ma ọ bụ kacha nta. N'otu oge ahụ, enwere ike ịhụ ya na oscilloscope dual-trace na mgbaàmà modulated output ga-apụta mgbanwe ugboro ugboro okpukpu abụọ. Naanị ọdịiche dị na voltaji DC nke kwekọrọ na mgbanwe ugboro abụọ ugboro abụọ dị nso bụ voltaji ọkara RF nke modulator electro-optic.
Nchịkọta: Ma usoro uru dị oke elu na usoro okpukpu abụọ ugboro ugboro nwere ike ịtụ voltaji ọkara-ebili nke modulator electro-optic n'ụzọ iwu kwadoro, mana maka ntụnyere, usoro uru dị ike chọrọ oge nha ogologo, oge nha ogologo ga-abụkwa n'ihi Ike anya mmepụta nke laser na-agbanwe agbanwe ma na-akpata njehie nha. Usoro uru dị oke elu kwesịrị inyocha DC bias na obere uru nzọụkwụ ma dekọọ ike anya mmepụta nke modulator n'otu oge iji nweta uru voltaji ọkara-ebili DC ziri ezi karị.
Usoro okpukpu abụọ ugboro ugboro bụ ụzọ isi chọpụta voltaji ọkara-wave site n'ileba anya na ụdị ebili mmiri ugboro abụọ. Mgbe voltaji bias etinyere ruru otu uru kpọmkwem, mgbagọ mmụba ugboro ugboro na-apụta, mgbagọ nhazi ebili mmiri adịghịkwa apụta nke ọma. Ọ dịghị mfe ịhụ ya na anya gba ọtọ. N'ụzọ dị otu a, ọ ga-akpata mmejọ ndị ka njọ, ihe ọ na-atụkwa bụ voltaji ọkara-wave RF nke modulator electro-optic.