Iimpawu ze-modulator yeMach-Zehnder

Iimpawu zeImodulator yeMach-Zehnder

I-Mach-Zehnder Modulator (efinyeziweyo njengeImodulator ye-MZM) sisixhobo esibalulekileyo esisetyenziselwa ukufezekisa ukuguqulwa kwesignali ye-optical kwicandelo lonxibelelwano lwe-optical. Yinto ebalulekileyo kwiI-Electro-Optic Modulator, kwaye izalathisi zayo zokusebenza zichaphazela ngokuthe ngqo ukusebenza kakuhle kothumelo kunye nokuzinza kweenkqubo zonxibelelwano. Oku kulandelayo sisingeniso kwizalathisi zayo eziphambili:

Iiparameters ezibonakalayo

1. I-bandwidth ye-3dB: Ibhekisa kuluhlu lweefrikhwensi xa ubukhulu besignali yesiphumo se-modulator buhla nge-3dB, iyunithi iyi-GHz. Okukhona i-bandwidth iphezulu, kokukhona izinga lokudluliselwa kwesignali exhaswayo liphezulu. Umzekelo, i-bandwidth ye-90GHz inokuxhasa ukuhanjiswa kwesignali ye-200Gbps ye-PAM4.

2. Umlinganiselo wokuphela (ER): Umlinganiselo wamandla aphezulu okukhupha i-optical ukuya kumandla amancinci okukhanya, kunye neyunithi ye-dB. Okukhona umlinganiselo wokuphela uphezulu, kokukhona umahluko phakathi kwe-“0″ kunye ne-“1″ kwisignali ubonakala ngokucacileyo, kwaye kokukhona amandla okulwa nengxolo eqinileyo.

3. Ukulahleka kokufakwa: Ukulahleka kwamandla okukhanya okwaziswa yi-modulator, kunye neyunithi ye-dB. Okukhona ilahleko yokufakwa iphantsi, kokukhona ukusebenza kakuhle kwenkqubo kuphezulu.

4. Ilahleko yokubuya: Umlinganiselo wamandla okukhanya abonakalisiweyo kwisiphelo sokufaka kumandla okukhanya okufakwayo, kunye neyunithi ye-dB. Ilahleko yokubuya ephezulu inokunciphisa impembelelo yokukhanya okubonakalisiweyo kwinkqubo.

Iiparameter zombane

I-voltage yesiqingatha-samaza (Vπ): I-voltage efunekayo ukuvelisa umahluko wesigaba se-180° kwisignali ye-optical ye-output ye-modulator, elinganiswe kwi-V. Okukhona i-Vπ iphantsi, kokukhona imfuneko ye-drive voltage incinci kwaye ukusetyenziswa kwamandla kuphantsi.

2. Ixabiso le-VπL: Imveliso yevolthi yesiqingatha-samaza kunye nobude bemodulator, ebonisa ukusebenza kakuhle kwemodulation. Umzekelo, i-VπL = 2.2V·cm (L=2.58mm) imele ivolthi yemodulation efunekayo kubude obuthile.

3. I-Dc bias voltage: Isetyenziselwa ukuzinzisa indawo yokusebenza yei-modulatorkwaye kuthintelwe ukuthambekela kokukhetha okubangelwa zizinto ezifana nobushushu kunye nokungcangcazela.

Ezinye izalathisi eziphambili

1. Izinga ledatha: Umzekelo, amandla okudlulisa isignali ye-PAM4 ye-200Gbps abonisa amandla onxibelelwano olukhawulezayo oluxhaswa yi-modulator.

2. Ixabiso le-TDECQ: Isalathisi sokulinganisa umgangatho weempawu eziguquliweyo, apho iyunithi ingu-dB. Okukhona ixabiso le-TDECQ liphezulu, kokukhona amandla esignali okulwa nengxolo eqina kwaye izinga lempazamo ye-bit liphantsi.

Isishwankathelo: Ukusebenza kwe-modulator kaMatshi-Zendl kugqitywa ngokupheleleyo zizalathisi ezifana ne-optical bandwidth, i-extinction ratio, i-insertion loss, kunye ne-half-wave voltage. I-bandwidth ephezulu, i-insertion loss ephantsi, i-extinction ratio ephezulu kunye ne-Vπ ephantsi ziimpawu eziphambili zee-high-performance modulators, ezichaphazela ngokuthe ngqo isantya sokudluliselwa, uzinzo kunye nokusetyenziswa kwamandla kweenkqubo zonxibelelwano lwe-optical.