Zviratidzo zveMach-Zehnder modulator

Zviratidzo zveMach-Zehnder modulator

Mach-Zehnder Modulator (yakapfupikiswa seMugadziri weMZM) chinhu chakakosha chinoshandiswa kuzadzisa modulation yechiratidzo che optical mumunda wekutaurirana kwe optical. Chinhu chakakosha cheModulator yeElectro-Optic, uye zviratidzo zvayo zvekushanda zvinokanganisa zvakananga kushanda zvakanaka kwekutumira uye kugadzikana kwemasisitimu ekutaurirana. Zvinotevera ndizvo zvinosumwa kuzviratidzo zvayo zvikuru:

Maparamita ekuona

1. 3dB bandwidth: Inoreva huwandu hwema frequency kana amplitude yechiratidzo chekubuda chemodulator ichiderera ne3dB, unit iri GHz. Bandwidth yakakwira, chiyero chekutumira chinotsigirwa chinokwira. Semuenzaniso, 90GHz bandwidth inogona kutsigira 200Gbps PAM4 signal transmission.

2. Chiyero cheKupera (ER): Chiyero chesimba guru remagetsi rinobuda nesimba shoma remagetsi, neyuniti ye dB. Chiyero chekupera kwemagetsi chakakwira, musiyano uripo pakati pe "0" ne "1" muchiratidzo unowedzera, uye kugona kwekudzivirira ruzha kwakasimba.

3. Kurasikirwa kwekuisa: Kurasikirwa kwesimba re optical kunounzwa ne modulator, neyuniti ye dB. Kuderera kwekuisa, ndiko kuwedzera kushanda zvakanaka kwesystem.

4. Kurasikirwa nekudzoka: Chiyero chesimba remagetsi rinoratidzwa pamagumo ekupinda kune simba remagetsi rinoiswa, neyuniti ye dB. Kurasikirwa nekudzoka kwakanyanya kunogona kuderedza kukanganiswa kwechiedza chinoratidzwa pahurongwa.

Maparamita emagetsi

Voltage yehafu-wave (Vπ): Voltage inodiwa kuti pave nemusiyano wechikamu che180° muchiratidzo che optical chinobuda chemodulator, chakayerwa muV. Kana Vπ yakaderera, zvinodiwa pa drive voltage zvinoderera uye simba rinoshandiswa rinoderera.

2. Kukosha kweVπL: Chibereko chevoltage yehafu-wave nehurefu hwemodulator, zvichiratidza kushanda kwemodulation. Semuenzaniso, VπL = 2.2V·cm (L=2.58mm) inomiririra modulation voltage inodiwa pakureba kwakatarwa.

3. Dc bias voltage: Inoshandiswa kudzikamisa pokushanda kwemodulatoruye kudzivirira kukanganiswa kwemamiriro ezvinhu kunokonzerwa nezvinhu zvakaita sekupisa uye kudedera.

Zvimwe zviratidzo zvikuru

1. Mwero wedata: Semuenzaniso, kugona kwekutumira chiratidzo chePAM4 che200Gbps kunoratidza kugona kwekutaurirana nekukurumidza kunotsigirwa nemodulator.

2. Kukosha kweTDECQ: Chiratidzo chekuyera mhando yemasaini akagadziriswa, iyo unit iri dB. Kana kukosha kweTDECQ kwakakwira, kugona kwechiratidzo kurwisa ruzha kwakasimba uye chiyero chekukanganisa kwebit chakaderera.

Pfupiso: Kushanda kwemodulator yeMarch-Zendl kunotsanangurwa zvizere nezviratidzi zvakaita se optical bandwidth, extinction ratio, insertion loss, uye half-wave voltage. Bandwidth yepamusoro, low insertion loss, high extinction ratio uye low Vπ ndizvo zvinhu zvikuru zve high-performance modulators, izvo zvinokanganisa zvakananga mwero wekutumira, kugadzikana uye kushandiswa kwesimba kwema optical communication systems.