Kodi Mach-Zehnder Modulator ndi chiyani

TheMach-Zehnder Modulator(MZ Modulator) ndi chida chofunikira chosinthira ma siginecha owoneka motengera mfundo yosokoneza. Mfundo yake yogwirira ntchito ndi motere: Panthambi yooneka ngati Y pamapeto olowera, kuwala kolowera kumagawidwa m'mafunde awiri a kuwala ndikulowetsamo njira ziwiri zofananira zowunikira kuti ziperekedwe motsatira. Njira yowunikira imapangidwa ndi zida za electro-optic. Pogwiritsa ntchito mphamvu yake ya photoelectric, pamene chizindikiro cha magetsi chogwiritsidwa ntchito kunja chimasintha, ndondomeko ya refractive ya zinthu zake imatha kusinthidwa, zomwe zimapangitsa kusiyana kwa njira za kuwala pakati pa matabwa awiri a kuwala omwe amafika ku nthambi yooneka ngati Y pamapeto otuluka. Pamene zizindikiro za kuwala muzitsulo ziwiri za kuwala zikufika panthambi yooneka ngati Y pamapeto otuluka, kusinthika kudzachitika. Chifukwa cha kuchedwa kwa magawo osiyanasiyana a zizindikiro ziwiri za kuwala, kusokoneza kumachitika pakati pawo, kutembenuza chidziwitso cha kusiyana kwa gawo chomwe chimatengedwa ndi zizindikiro ziwiri za kuwala mu chidziwitso champhamvu cha chizindikiro chotuluka. Chifukwa chake, ntchito yosinthira ma siginecha amagetsi pa zonyamulira zowoneka bwino imatha kutheka powongolera magawo osiyanasiyana amagetsi otsegulira a March-Zehnder modulator.

Zoyambira zoyambira zaModulator ya MZ

Magawo oyambira a MZ Modulator amakhudza mwachindunji magwiridwe antchito a modulator muzochitika zosiyanasiyana zogwiritsira ntchito. Pakati pawo, magawo ofunika kwambiri a kuwala ndi magetsi ndi awa.

Optical parameters:

(1) Optical bandwidth (3db bandwidth) : Kuthamanga kwafupipafupi pamene kuyankha kwafupipafupi kumachepetsedwa ndi 3db kuchokera pamtengo wapatali, ndi unit kukhala Ghz. Optical bandwidth imawonetsa ma frequency a siginecha pomwe modulator ikugwira ntchito moyenera ndipo ndi gawo loyezera kuchuluka kwa chidziwitso cha chonyamulira chowunikira muelectro-optic module.

(2) Chiŵerengero cha Kutha: Chiŵerengero cha mphamvu yaikulu ya kuwala kwamagetsi ndi electro-optic modulator ku mphamvu yochepa ya kuwala, ndi unit ya dB. Chiŵerengero cha kuzimiririka ndi gawo lowunika mphamvu ya ma electro-optic switch ya modulator.

(3) Kubwerera Kutayika: Chiyerekezo cha mphamvu yowunikira yomwe imawonetsedwa kumapeto kwa cholowetsamodulatorku mphamvu yowunikira yolowera, yokhala ndi gawo la dB. Kubwereranso kutayika ndi chizindikiro chomwe chimawonetsa mphamvu zomwe zachitika zomwe zikuwonetsedwa kugwero la siginecha.

(4) Kutayika kwa kulowetsa: Chiŵerengero cha mphamvu ya kuwala kwa mphamvu yowonjezera yowonjezera ya modulator ikafika pa mphamvu yake yotulutsa mphamvu, ndi unit kukhala dB. Kutayika kolowetsa ndi chizindikiro chomwe chimayesa kutayika kwa mphamvu ya kuwala komwe kumachitika chifukwa cha kuyika kwa njira ya kuwala.

(5) Mphamvu yamagetsi yolowera kwambiri: Pakugwiritsa ntchito bwino, mphamvu yamagetsi ya MZM Modulator iyenera kukhala yocheperako kuposa mtengowu kuti tipewe kuwonongeka kwa chipangizocho, pomwe chipangizocho chimakhala ndi mW.

(6) Kusinthasintha kwakuya: Zimatanthawuza chiŵerengero cha matalikidwe a chizindikiro cha kusinthasintha kwa matalikidwe a chonyamulira, nthawi zambiri amawonetsedwa ngati peresenti.

Mphamvu zamagetsi:

Half-wave voltage: Imatanthawuza kusiyana kwa voteji komwe kumafunika kuti magetsi oyendetsa galimoto asinthe modulator kuchokera kumtunda kupita ku boma. Mphamvu yamagetsi yotulutsa ya MZM Modulator imasiyanasiyana mosalekeza ndi kusintha kwa voliyumu ya kukondera. Pamene modulator linanena bungwe amapanga 180 digiri gawo kusiyana, kusiyana kukondera voteji lolingana ndi moyandikana mfundo osachepera ndi mfundo pazipita ndi theka yoweyula voteji, ndi unit V. chizindikiro ichi anatsimikiza ndi zinthu monga chuma, dongosolo ndi ndondomeko, ndipo ndi chibadidwe chizindikiro chaModulator ya MZM.

(2) Kuchuluka kwa magetsi a DC bias: Panthawi yogwiritsira ntchito nthawi zonse, magetsi olowa nawo a MZM ayenera kukhala ocheperapo kuti ateteze kuwonongeka kwa chipangizo. Chipangizocho ndi V. Mphamvu ya DC bias voltage imagwiritsidwa ntchito kuwongolera kukondera kwa modulator kuti ikwaniritse zofunikira zosiyanasiyana zosinthira.

(3) Kuchuluka kwa siginecha ya RF: Pakugwiritsa ntchito bwino, chizindikiro chamagetsi cha RF cha MZM chikuyenera kukhala chocheperako kuti chiteteze kuwonongeka kwa chipangizocho. Chigawochi ndi V. Chizindikiro cha ma radio frequency ndi chizindikiro chamagetsi chomwe chiyenera kusinthidwa pa chonyamulira cha kuwala.