Iimpawu zemodyuli ye-Mach-Zehnder

Iimpawu zeImodyuli kaMach-Zehnder

I-Mach-Zehnder Modulator (efinyeziweyo njengeImodyuli ye-MZM) sisixhobo esingundoqo esisetyenziselwa ukufezekisa ukumodareyitha kwesignali ye-optical kwintsimi yonxibelelwano lwe-optical. Lilungu elibalulekileyo leI-Electro-Optic Modulator, kunye nezalathi zayo zokusebenza zichaphazela ngokuthe ngqo ukuhanjiswa kunye nokuzinza kweenkqubo zonxibelelwano. Oku kulandelayo yintshayelelo yezalathi zayo eziphambili:

Iiparamitha zamehlo

1. I-3dB bandwidth: Ibhekisela kuluhlu lwamaza xa i-amplitude ye-modulator ye-output signal ihla nge-3dB, kunye neyunithi ye-GHz. Iphezulu i-bandwidth, iphezulu izinga lokudluliselwa kwesignali exhaswayo. Ngokomzekelo, i-bandwidth ye-90GHz inokuxhasa i-200Gbps PAM4 ukuhanjiswa kwesignali.

2. I-Extinction ratio (ER) : Umlinganiselo wesiphumo esiphezulu samandla optical kumandla amancinci optical, kunye neyunithi ye-dB. Okukhona uphezulu umlinganiselo wokutshabalala, kokukhona ucaca ngakumbi umahluko phakathi kwe-“0” kunye ne “1” kuphawu, kwaye kokukhona unamandla okuchasa ingxolo.

3. Ilahleko yokufaka: Ilahleko yamandla okukhanya yaziswa yimodyuli, kunye neyunithi ye-dB. Ilahleko esezantsi yokufaka, iphezulu ukusebenza kakuhle kwenkqubo.

4. Ilahleko yokubuyisela: Umlinganiselo we-optical power ebonakalisiweyo ekupheleni kwegalelo kwi-input optical power, kunye neyunithi ye-dB. Ilahleko ephezulu yokubuyisela inokunciphisa impembelelo yokukhanya okubonakalisiweyo kwinkqubo.

Iiparamitha zombane

I-Half-wave voltage (Vπ) : I-voltage efunekayo ukuvelisa i-180 ° umehluko wesigaba kwi-output optical signal ye-modulator, elinganiswe kwi-V. Ephantsi kwe-Vπ, i-incinci imfuneko yombane wokuqhuba kunye nokunciphisa ukusetyenziswa kwamandla.

2. Ixabiso le-VπL: Imveliso yombane wesiqingatha-amaza kunye nobude bemodyuli, ebonisa ukusebenza kakuhle kokumodareyitha. Umzekelo, i-VπL = 2.2V · cm (L=2.58mm) imele umbane wokutshintsha ofunekayo kubude obuthile.

3. Dc bias voltage: Isetyenziselwa ukuzinzisa indawo yokusebenza yeimodyulikunye nokuthintela ukukhukuliseka komkhethe okubangelwa yimiba efana nobushushu kunye nokungcangcazela.

Ezinye izalathisi eziphambili

1. Ireyithi yedatha: Ngokomzekelo, i-200Gbps PAM4 ikhono lokuhambisa umqondiso libonisa amandla onxibelelwano olukhawulezayo oluxhaswa yimodyuli.

2. Ixabiso le-TDECQ: Isalathisi sokulinganisa umgangatho weempawu eziguquliweyo, kunye neyunithi ibe yi-dB. Okukhona liphezulu ixabiso le-TDECQ, kokukhona umqondiso unamandla okuchasa ingxolo kunye nesantya esisezantsi sempazamo.

Isishwankathelo: Ukusebenza kwemodyuli ye-Matshi-Zendl igqitywe ngokubanzi zizibonakaliso ezifana ne-bandwidth ye-optical, i-extinction ratio, ilahleko yokufaka, kunye ne-half-wave voltage. I-bandwidth ephezulu, ilahleko ephantsi yokufaka, umlinganiselo ophezulu wokuphela kunye ne-Vπ ephantsi zizinto eziphambili zeemodyuli eziphezulu zokusebenza, ezichaphazela ngokuthe ngqo izinga lokudluliselwa, ukuzinza kunye nokusetyenziswa kwamandla kwiinkqubo zokunxibelelana kwe-optical.