Zviratidzo zveMach-Zehnder modulator

Zviratidzo zveMach-Zehnder modulator

Iyo Mach-Zehnder Modulator (yakapfupikiswa seMZM modulator) chinhu chakakosha chinoshandiswa kuwana optical signal modulation mumunda we optical communication. Icho chikamu chakakosha cheElectro-Optic Modulator, uye zviratidzo zvayo zvekushanda zvinokanganisa zvakananga kushandiswa kwekufambisa uye kugadzikana kwemaitiro ekutaurirana. Izvi zvinotevera sumo yezviratidzi zvayo zvikuru:

Optical parameters

1. 3dB bandwidth: Inoreva frequency renji apo amplitude yemodulator yekubuda kwechiratidzo inodonha ne3dB, iyo unit iri GHz. Iyo yakakwirira iyo bandwidth, iyo inokwirisa inotsigirwa inotsigirwa chiratidzo chekufambisa. Semuenzaniso, 90GHz bandwidth inogona kutsigira 200Gbps PAM4 chiratidzo chekufambisa.

2. Extinction ratio (ER) : Chiyero chehuwandu hwekubuda kwemagetsi emagetsi kune simba rekuona zvishoma, nechikamu che dB. Iyo yakakwira iyo reshiyo yekutsakatika, ndipo panobva yanyanya kusiyanisa musiyano uripo pakati pe "0" ne "1" muchiratidzo, uye kusimba kweiyo anti-ruzha kugona.

3. Kurasikirwa kwekupinza: Kurasikirwa kwemagetsi kwemaziso kwakaunzwa nemodulator, ine chikwata che dB. Iyo yakaderera kurasikirwa kwekuisa, iyo yakakwirira yehuwandu hwekuita kwehurongwa.

4. Kudzorera kurasikirwa: Chiyero cheyakaratidza simba remaziso pamagumo ekupinza kune simba rekupinza rekuisa, nechikamu che dB. Kurasikirwa kukuru kwekudzoka kunogona kuderedza kukanganiswa kwechiedza chinoratidzwa pahurongwa.

Magetsi parameters

Half-wave voltage (Vπ) : Mhepo inodiwa kuti ibudise 180 ° mutsauko wechikamu mukubuda kwechiratidzo chemodulator, yakayerwa muV. Iyo yakadzika Vπ, iyo diki yedhiraivha inodiwa uye inoderedza simba rekushandisa.

2. VπL kukosha: Chigadzirwa chehafu-wave voltage uye urefu hwemodulator, ichiratidza kushanda kwekugadzirisa. Semuenzaniso, VπL = 2.2V·cm (L=2.58mm) inomiririra modulation voltage inodiwa pakureba chaiko.

3. Dc bias voltage: Inoshandiswa kudzikamisa nzvimbo yekushandisa yemodulatoruye kudzivirira rusaruro kukukurwa kunokonzerwa nezvinhu zvakaita setembiricha uye kuzunguzika.

Zvimwe zviratidzo zvinokosha

1. Nhamba yedata: Semuyenzaniso, iyo 200Gbps PAM4 chiratidzo chekutumira chiratidzo chinoratidza kukurumidza-kukurumidzira kugona kunotsigirwa nemodulator.

2. TDECQ kukosha: Chiratidzo chekuyera kunaka kwezviratidzo zvakagadziriswa, nechikwata chiri dB. Iyo yakakwira iyo TDECQ kukosha, ndiko kusimba kwechiratidzo chekudzivirira ruzha uye kudzikisa mwero wekukanganisa.

Pfupiso: Kuita kweMarch-Zendl modulator kunonyatso kutsanangurwa nezviratidzo zvakaita seOptical bandwidth, extinction ratio, kurasikirwa kwekuisa, uye hafu-wave voltage. Yakakwira bandwidth, yakaderera yekuisa kurasikirwa, yakakwira yekudzima reshiyo uye yakaderera Vπ ndiwo akakosha maficha epamusoro-kuita modulators, ayo anokanganisa zvakananga mwero wekutapurirana, kugadzikana uye kushandiswa kwesimba kweoptical communication system.