Ngā tohu o te pūwhakatikatika Mach-Zehnder

Ngā tohu o tePūwhakarerekētanga Mach-Zehnder

Ko te Mach-Zehnder Modulator (e whakarāpopototia ana koKaiwhakarerekētanga MZM) he taputapu matua e whakamahia ana hei whakatutuki i te whakarerekētanga tohu whatu i roto i te ao whakawhitiwhiti kōrero whatu. He wāhanga nui oKaiwhakarerekētanga Hiko-Whiti, ā, ka pā tika ana ōna tohu mahi ki te pai o te tuku me te pumau o ngā pūnaha whakawhitiwhiti kōrero. Koinei te kupu whakataki ki ōna tohu matua:

Ngā tawhā whatu

1. Te whānui o te 3dB: E pā ana ki te whānuitanga o te auau ina heke te kaha o te tohu putanga o te modulator mā te 3dB, ko te waeine ko GHz. Ko te teitei ake o te whānui o te 3dB, ko te teitei ake o te tere tuku tohu e tautokona ana. Hei tauira, ka taea e te whānui o te 90GHz te tautoko i te tuku tohu PAM4 200Gbps.

2. Ōwehenga ngaromanga (ER): Ko te ōwehenga o te mana whatu putanga mōrahi ki te mana whatu iti rawa, me te waeine o te dB. Ko te teitei ake o te ōwehenga ngaromanga, ko te mārama ake o te rerekētanga i waenga i te "0" me te "1" i roto i te tohu, ā, ko te kaha ake o te āheinga ārai-haruru.

3. Ngaronga whakaurunga: Ko te ngaronga mana whatu e tukuna ana e te modulator, me te waeine o te dB. Ko te iti o te ngaronga whakaurunga, ko te teitei ake o te whai huatanga whānui o te pūnaha.

4. Ngaronga whakahoki: Ko te ōwehenga o te mana whatu whakaata i te pito whakauru ki te mana whatu whakauru, me te waeine o te dB. Ka taea e te ngaronga whakahoki teitei te whakaiti i te pānga o te mārama whakaata ki te pūnaha.

Ngā tawhā hiko

Ngaohiko haurua-ngaru (Vπ): Ko te ngaohiko e hiahiatia ana hei whakaputa i te rerekētanga ā-wāhanga 180° i roto i te tohu whatu putanga o te modulator, e inehia ana i roto i te V. Ko te iti o te Vπ, ko te iti ake o te ngaohiko taraiwa e hiahiatia ana, ā, ko te iti ake o te whakapaunga hiko.

2. Uara VπL: Ko te hua o te ngaohiko haurua-ngaru me te roa o te modulator, e whakaata ana i te whai huatanga o te modulation. Hei tauira, ko te VπL = 2.2V·cm (L=2.58mm) e tohu ana i te ngaohiko modulation e hiahiatia ana i tētahi roa motuhake.

3. Ngaohiko whakahāngai DC: Ka whakamahia hei whakau i te pūwāhi whakahaere o tekaiwhakarerekēme te ārai i te nekehanga pīrori i puta mai i ngā āhuatanga pēnei i te pāmahana me te wiri.

Ētahi atu tohu matua

1. Te tere raraunga: Hei tauira, ko te kaha tuku tohu PAM4 200Gbps e whakaata ana i te kaha whakawhitiwhiti tere-tiketike e tautokona ana e te modulator.

2. Uara TDECQ: He tohu mō te ine i te kounga o ngā tohu kua whakarerekētia, ko te waeine ko dB. Ka teitei ake te uara TDECQ, ka kaha ake te kaha ātete-haruru o te tohu, ā, ka iti ake te tere hapa moka.

Whakarāpopototanga: Ko te mahi a te pūwhakawhitiwhiti March-Zendl ka whakatauhia whānuitia e ngā tohu pēnei i te whānui o te whānui whatu, te ōwehenga mate, te ngaronga whakaurunga, me te ngaohiko haurua-ngaru. Ko te whānui teitei, te ngaronga whakaurunga iti, te ōwehenga mate teitei me te Vπ iti ngā āhuatanga matua o ngā pūwhakawhitiwhiti mahi-teitei, e pā tika ana ki te tere tuku, te pumau me te whakapaunga pūngao o ngā pūnaha whakawhitiwhiti whatu.