Iji gboo mkpa ozi na-arịwanye elu nke ndị mmadụ, ọnụego nnyefe nke sistemụ nkwurịta okwu fiber optical na-abawanye kwa ụbọchị. Netwọk nkwurịta okwu anya n'ọdịnihu ga-etolite gaa na netwọk nkwurịta okwu fiber optical nwere oke ọsọ dị oke elu, ikike dị ukwuu, ogologo ogologo ogologo, na arụmọrụ dị elu dị elu. Ihe nnyefe dị oke egwu. Ihe na-ebufe mgbama ngwa anya dị elu bụ nke nwere laser nke na-emepụta ihe na-ebu ngwa anya, ngwaọrụ na-eme ka mgbama ọkụ eletrik na-eme ka ọ dị elu, na igwe ọkụ eletrik dị elu nke na-eme ka onye na-ebu ihe anya. Tụnyere ụdị ndị ọzọ nke mpụga modulators, lithium niobate electro-optical modulators nwere uru nke ukwuu ọrụ ugboro, ezi kwụsie ike, elu ikpochapu ruru, kwụsiri ike na-arụ ọrụ arụmọrụ, elu modulation ọnụego, obere chirp, mfe njikọ, tozuru okè mmepụta technology, wdg Ọ. a na-eji ya eme ihe n'ọtụtụ ebe na usoro mgbasa ozi ngwa anya dị elu, nnukwu ike na ogologo oge.
Voltaji ọkara ebili mmiri bụ oke anụ ahụ dị oke egwu nke modulator electro-optic. Ọ na-anọchi anya mgbanwe na voltaji elere anya kwekọrọ na ike ọkụ mmepụta nke modulator electro-optic site na nke kacha nta ruo na nke kachasị. Ọ na-ekpebi modulator electro-optic ruo n'ókè dị ukwuu. Otu esi atụta n'ụzọ ziri ezi na ngwa ngwa voltaji ọkara ebili mmiri nke modulator electro-optic bụ ihe dị oke mkpa maka ịkwalite arụmọrụ ngwaọrụ na imeziwanye arụmọrụ nke ngwaọrụ ahụ. Voltage ọkara-ebili mmiri nke modulator electro optic gụnyere DC (ọkara ebili mmiri
voltaji na rediofrequency) voltaji ọkara ebili mmiri. Ọrụ mbufe nke electrooptic modulator bụ nke a:
Otu n'ime ha bụ mmepụta anya ike nke electro-optic modulator;
Ọ bụ ike ntinye anya nke modulator;
Bụ ntinye ntinye nke modulator electro-optic;
Ụzọ ndị dị ugbu a maka ịlele voltaji ọkara ebili mmiri gụnyere oke uru ọgbọ na usoro ugboro abụọ, nke nwere ike ịlele voltaji nke ugbu a (DC) ọkara ebili mmiri na redio (RF) nke ọkara nke modulator, n'otu n'otu.
Tebụl 1 Ntụle nke ụzọ nnwale voltaji ọkara abụọ
| Usoro uru dị oke egwu | Usoro okpukpu abụọ ugboro ugboro | |
| Ngwa ụlọ nyocha | Ọkụ ọkụ laser Modulator ike n'okpuru ule Igwe ọkụ DC na-agbanwe agbanwe ± 15V Mita ike anya | Isi iyi ọkụ laser Modulator ike n'okpuru ule Ọkụ ọkụ DC na-agbanwe agbanwe Oscilloscope isi mmalite mgbaàmà (DC Bias) |
| oge ule | Nkeji 20 () | 5min |
| Uru nnwale | mfe imezu | Nnwale ezighi ezi Nwere ike nweta voltaji ọkara ebili mmiri DC na voltaji ọkara RF n'otu oge |
| Ọdịmma nnwale | Ogologo oge na ihe ndị ọzọ, ule ahụ ezighi ezi Nnwale onye njem ozugbo DC voltaji ọkara ebili mmiri | Ogologo oge dịtụ aka Ihe ndị dị ka nnukwu ebili mmiri na-agbagọ njehie ikpe, wdg, ule ahụ ezighi ezi |
Ọ na-arụ ọrụ dị ka ndị a:
(1) Usoro uru dị oke oke
A na-eji usoro uru dị oke egwu tụọ voltaji ọkara nke DC nke modulator electro-optic. Nke mbụ, na-enweghị mgbama modulation, a na-enweta ntụgharị ọrụ mbufe nke electro-optic modulator site na ịlele voltaji DC bias voltaji na mgbanwe ọkụ ọkụ na-emepụta, na site na ntụgharị ọrụ mbufe Kpebisie ike na ọnụ ahịa bara uru na nke kacha nta, na nweta ụkpụrụ voltaji DC kwekọrọ na Vmax na Vmin n'otu n'otu. N'ikpeazụ, ọdịiche dị n'etiti ụkpụrụ voltaji abụọ a bụ voltaji ọkara-efegharị Vπ=Vmax-Vmin nke modulator electro-optic.
(2) Usoro ịgbakọ ugboro ugboro
Ọ na-eji usoro ugboro abụọ ugboro iji tụọ voltaji ọkara ebili mmiri RF nke modulator electro-optic. Tinye kọmpụta DC na-enweghị isi na mgbama modulation AC na modulator electro-optic n'otu oge iji mezie voltaji DC mgbe ọkụ nrụpụta gbanwere ka ọ bụrụ uru kachasị ma ọ bụ kacha nta. N'otu oge ahụ, enwere ike ịhụ ya na oscilloscope dual-trace na mgbama mpụta ga-apụta ugboro abụọ na-agbagọ okpukpu abụọ. Naanị ihe dị iche na voltaji DC kwekọrọ na mgbagha ugboro abụọ dị n'akụkụ bụ voltaji ọkara ebili mmiri nke RF nke modulator electro-optic.
Nchịkọta: Ma usoro uru dị oke ọnụ na usoro ugboro abụọ nke ugboro abụọ nwere ike jiri nlezianya tụọ voltaji nke ọkara nke igwe eletrọnịkị, mana maka ntụnyere, usoro uru dị ike chọrọ ogologo oge nha, yana ogologo oge nha ga-abụ n'ihi Ike ngwa anya nke laser na-agbanwe ma na-ebute njehie nha. Usoro uru dị oke mkpa kwesịrị iji obere ihe nrịba ama ntanye nyochaa ike DC wee dekọọ ike ngwa anya nke modulator n'otu oge iji nweta uru voltaji ọkara ebili mmiri DC ziri ezi.
Usoro ugboro abụọ nke ugboro abụọ bụ usoro iji chọpụta voltaji ọkara nke ebili mmiri site na ileba anya ugboro abụọ na-emegharị ugboro ugboro. Mgbe voltaji elegharị anya nke etinyere na-erute otu uru, mgbagha ịba ụba ugboro na-apụta, na mgbagha ụdị ebili mmiri anaghị ahụkwa ya nke ukwuu. Ọ dịghị mfe iji anya gba ọtọ hụ. N'ụzọ dị otú a, ọ ga-abụrịrị na ọ ga-ebute njehie ndị dị ịrịba ama, na ihe ọ tụrụ bụ voltaji ọkara nke RF nke modulator electro-optic.