Optoelectronic e hangai ana ki te silicon kiatoKaiwhakarerekē IQmō te whakawhitiwhiti kōrero tere-teitei
Ko te pikinga ake o te hiahia mō ngā tere tuku raraunga teitei ake me ngā transceivers whai hua ake i roto i ngā pokapū raraunga kua akiaki i te whanaketanga o ngā ratonga mahi-teitei kiato.ngā kaiwhakatikatika whatuKua noho te hangarau optoelectronic e hangai ana ki te silicon (SiPh) hei tūāpapa whai hua mō te whakauru i ngā wāhanga photonic ki roto i tētahi maramara kotahi, e āhei ai ngā otinga kiato me te utu-whai hua. Ka tūhuratia e tēnei tuhinga tētahi modulator silicon IQ hou e pehia ana te kawe i runga i ngā GeSi EAM, ka taea te mahi i te auau tae atu ki te 75 Gbaud.
Te hoahoa me ngā āhuatanga o te taputapu
Ko te pūwhakarerekē IQ kua whakaarohia he hanganga ringaringa-toru kiato, e whakaaturia ana i te Pikitia 1 (a). He mea tito mai i ngā GeSi EAM e toru me ngā pūwhakarerekē āhua whatu wera e toru, e whakamahi ana i te whirihoranga ōrite. Ka honoa te mārama whakauru ki roto i te maramara mā te hononga kume (GC) ka wehea ōritetia kia toru ngā ara mā te ine whakawhiti aratau maha 1×3 (MMI). I muri i te haere i roto i te pūwhakarerekē me te pūwhakarerekē āhua, ka honoa anō te mārama e tētahi atu 1×3 MMI, kātahi ka honoa ki te muka aratau kotahi (SSMF).
Pikitia 1: (a) Whakaahua mōkito o te IQ modulator; (b) – (d) EO S21, te whānuitanga o te ōwehenga whakamōrearea, me te tuku o tētahi GeSi EAM kotahi; (e) Te hoahoa hoahoa o te IQ modulator me te wāhanga whatu e rite ana o te nekehanga wāhanga; (f) Te whakaaturanga pehi kawe i runga i te papa matatini. E ai ki te Pikitia 1 (b), he whānui te whānuitanga hiko-whatu o GeSi EAM. I inehia e te Pikitia 1 (b) te tawhā S21 o tētahi hanganga whakamātautau GeSi EAM kotahi mā te whakamahi i tētahi tātari wāhanga whatu (LCA) 67 GHz. E whakaatu ana ngā Pikitia 1 (c) me te 1 (d) i ngā whānuitanga ōwehenga whakamōrearea tūmau (ER) i ngā ngaohiko DC rerekē me te tuku i te roangaru o te 1555 nanometer.
E ai ki te Pikitia 1 (e), ko te āhuatanga matua o tēnei hoahoa ko te kaha ki te pehi i ngā kaikawe whatu mā te whakarerekē i te nekehanga ā-wāhanga kua whakauruhia ki te ringa waenga. Ko te rerekētanga ā-wāhanga i waenga i ngā ringa o runga me o raro ko π/2, e whakamahia ana mō te whakatikatika uaua, ko te rerekētanga ā-wāhanga i waenga i te ringa waenga ko -3 π/4. Mā tēnei whirihoranga ka taea te whakararuraru kino ki te kaikawe, e ai ki te whakaaturanga i te papa matatini o te Pikitia 1 (f).
Te whakatakotoranga whakamātautau me ngā hua
Ko te whakatakotoranga whakamātautau tere-teitei e whakaaturia ana i te Pikitia 2 (a). Ka whakamahia he whakaputa ngaru ā-wāhanga (Keysight M8194A) hei pūtake tohu, ā, e rua ngā whakakaha RF ōrite ā-wāhanga 60 GHz (me ngā tī whakahāngai whakauru) e whakamahia ana hei taraiwa whakarerekētanga. Ko te ngaohiko whakahāngai o te GeSi EAM he -2.5 V, ā, ka whakamahia he taura RF ōrite ā-wāhanga hei whakaiti i te kore ōrite ā-wāhanga hiko i waenga i ngā hongere I me Q.
Pikitia 2: (a) Tatūnga whakamātautau tere teitei, (b) Te pehi i te kaikawe i te 70 Gbaud, (c) Te tere hapa me te tere raraunga, (d) Te whetū i te 70 Gbaud. Whakamahia he taiaho āputa ā-waho arumoni (ECL) me te whānui raina o te 100 kHz, te roanga ngaru o te 1555 nm, me te mana o te 12 dBm hei kaikawe whatu. I muri i te whakarerekētanga, ka whakanuia te tohu whatu mā te whakamahi i tētahiwhakakaha muka kua tāpirihia ki te erbium(EDFA) hei utu mō ngā ngaronga hononga i runga i te maramara me ngā ngaronga whakaurunga pūwhakarerekē.
I te pito whiwhi, ka aroturukihia e te Kaitātari Whānuitanga Āhua (OSA) te whānuitanga tohu me te pehitanga kaikawe, e whakaaturia ana i te Pikitia 2 (b) mō te tohu 70 Gbaud. Whakamahia he kaiwhiwhi honohono rua-polarization hei whiwhi tohu, kei roto ko te whakaranu whatu 90 nekehanga me ngā tohu e whā.Ngā pūoro whakaahua taurite 40 GHz, ā, e hono ana ki tētahi oscilloscope wā-tūturu (RTO) 33 GHz, 80 GSa/s (Keysight DSOZ634A). Ko te pūtake ECL tuarua me te whānuitanga raina o te 100 kHz e whakamahia ana hei oscilloscope ā-rohe (LO). Nā te mea e mahi ana te tuku i raro i ngā āhuatanga polarization kotahi, e rua noa ngā hongere hiko e whakamahia ana mō te tahuritanga anaro-ki-matihiko (ADC). Ka tuhia ngā raraunga ki runga RTO, ā, ka tukatukahia mā te whakamahi i tētahi tukatuka tohu matihiko tuimotu (DSP).
E ai ki te Whakaahua 2 (c), i whakamatautauria te IQ modulator mā te whakamahi i te hōputu QPSK modulation mai i te 40 Gbaud ki te 75 Gbaud. E whakaatu ana ngā hua i raro i ngā āhuatanga 7% o te whakatikatika hapa whakatau whakamua pakeke (HD-FEC), ka taea e te tere te eke ki te 140 Gb/s; i raro i te āhuatanga 20% o te whakatikatika hapa whakatau whakamua ngohengohe (SD-FEC), ka taea e te tere te eke ki te 150 Gb/s. Ko te hoahoa whetū i te 70 Gbaud e whakaaturia ana i te Whakaahua 2 (d). Ko te hua e whakawhāitihia ana e te whānui o te oscilloscope o te 33 GHz, he rite ki te whānui o te tohu o te 66 Gbaud.
E ai ki te Pikitia 2 (b), ka taea e te hanganga ringa e toru te pehi i ngā kaikawe whatu me te tere whakakorenga neke atu i te 30 dB. Kāore e hiahiatia he pehi katoa i te kaikawe i tēnei hanganga, ā, ka taea hoki te whakamahi i roto i ngā kaiwhiwhi e hiahia ana ki ngā oro kaikawe hei whakaora i ngā tohu, pērā i ngā kaiwhiwhi Kramer Kronig (KK). Ka taea te whakarite i te kaikawe mā te neke ā-wāhanga ringa pokapū hei whakatutuki i te ōwehenga kaikawe ki te taha taha (CSR) e hiahiatia ana.
Ngā Painga me ngā Taupānga
Ki te whakataurite ki ngā pūwhakatikatika Mach Zehnder tuku iho (Ngā kaiwhakarerekētanga MZM) me ētahi atu kaiwhakatikatika IQ optoelectronic e hangai ana ki te silicon, he maha ngā painga o te kaiwhakatikatika IQ silicon kua whakaarohia. Tuatahi, he iti te rahi, neke atu i te 10 ngā wā iti iho i ngā kaiwhakatikatika IQ e hangai ana kiNgā pūwhakarerekētanga Mach Zehnder(haunga ngā papa hononga), nā reira ka whakanui ake i te kiato whakauru me te whakaiti i te horahanga maramara. Tuarua, kāore e hiahiatia te whakamahinga o ngā ātete pito mō te hoahoa hiko whakarārangi, nā reira ka whakaitihia te kaha o te taputapu me te kaha mō ia moka. Tuatoru, ka whakanuia e te kaha pehi kawe te whakaiti i te mana tuku, ka whakapai ake i te whai huatanga o te kaha.
Hei tāpiritanga, he whānui rawa te whānuitanga whatu o te GeSi EAM (neke atu i te 30 nanometer), ā, kāore e hiahiatia he ara iahiko whakahaere urupare maha-hongere me ngā tukatuka hei whakau me te tukutahi i te haruru o ngā modulators ngaruiti (MRM), ā, mā reira ka māmā ake te hoahoa.
He tino pai tēnei pūwhakarere IQ kiato, whai hua hoki mō te whakatupuranga hou, he nui te tatau o ngā hongere, me ngā whakawhiti raraunga iti e piripono ana i roto i ngā pokapū raraunga, e āhei ai te kaha ake me te whakawhitiwhiti kōrero whatu e whai hua ana ki te pūngao.
He tino pai te mahi a te pūwhakarerekētanga IQ silicon kua pehia e te kaikawe, me te tere tuku raraunga tae atu ki te 150 Gb/s i raro i ngā tikanga SD-FEC 20%. He nui ngā painga o tōna hanganga ringaringa-toru kiato i runga i te GeSi EAM e pā ana ki te tapuwae, te whai hua o te pūngao, me te ngāwari o te hoahoa. Kei tēnei pūwhakarerekētanga te kaha ki te pehi, ki te whakatika rānei i te kaikawe whatu, ā, ka taea te whakauru atu ki ngā kaupapa kimi mārama me ngā kaupapa kimi Kramer Kronig (KK) mō ngā kaiwhakawhitiwhiti mārama maha-raina. Ko ngā whakatutukitanga kua whakaatuhia e akiaki ana i te whakatutukitanga o ngā kaiwhakawhitiwhiti whatu tino whakauru me te whai hua hei whakatutuki i te hiahia e tipu haere ana mō te whakawhitiwhiti raraunga kaha-teitei i roto i ngā pokapū raraunga me ētahi atu mara.
Wā tuku: Hanuere-21-2025