Nheyo yekushanda kwe common intensity modulator

Nheyo yekushanda kwe "common"modulator yesimba

Nheyo yezvinogadzirisa simba inosiyana zvichienderana nerudzi rwayo. Inotevera ndiyo misimboti inoshanda yezvinogadzirisa simba zvinojairika:

1. Modulator yeMach Zehnder Intensity (Modulator yeMZM)
Nheyo huru: Yakavakirwa pamhedzisiro yekupindira kwechiedza. Nheyo yeelectro-optic intensity modulationndeyekushandisa electro-optic effect yemakristaro uye kuwana simba rekuchinja zvichienderana nepfungwa yekupindira kwechiedza chakasanganiswa. Electro-optic effect yekristaro inoreva chiitiko umo refractive index yekristaro inoshanduka pasi pekushanda kwesimba remagetsi rekunze, zvichikonzera musiyano wechikamu pakati pechiedza chinopfuura nekristaro munzira dzakasiyana dzepolarization, nokudaro zvichichinja mamiriro epolarization yechiedza.
Maitiro ekushanda:
Mwenje wekupinda unopatsanurwa kuita nzira mbiri nebeam splitter uye unopfuura nepamaoko maviri ewaveguide zvichiteerana.
Kushandisa voltage yekunze kune rimwe kana ruoko rwese uye kushandisa electro-optic effect (yakadai se linear electro-optic effect ye lithium niobate crystal) kuchinja refractive index ye waveguide, nokudaro kuchinjwa phase ye light wave muruoko.
Marambi maviri echiedza anosanganiswa pamagumo emagetsi, uye nekuda kwemusiyano wezvikamu zvakasiyana, kupindirana kwesimba remagetsi kana kuparadza kunogona kuitika, zvichikonzera shanduko mukusimba kwesimba remagetsi rinobuda.
Kana musiyano wechikamu pakati pemaoko maviri uri 0, simba rechiedza chinobuda rinenge riri pakakwirira kwazvo (mumamiriro ekuti "pari"); Kana musiyano wechikamu uri π, simba rechiedza chinobuda rinoderedzwa (mumamiriro ekuti "harina"), zvichiita kuti pave nekuchinja kwesimba.

2. Electro Absorption Intensity Modulator (EAM)
Nheyo huru: Kushandisa mhedzisiro ye electroabsorption yezvinhu zve quantum well.
Maitiro ekushanda:
Kushandisa simba remagetsi rekunze pamidziyo ye semiconductor ye quantum well kunochinja mwero wekunyudzwa kwezvinhu.
Kana chiedza chikapfuura nepakati pechinhu, simba racho rinoshanduka nekuda kwekuchinja kwesimba rekushandisa chiedza, zvichiita kuti chiedza chigadzike.
Kazhinji zvinoda reverse bias, uye input electrical signal ine hukama hwe exponential ne output light intensity, zvichiita kuti ive yakakodzera kukurukurirana kwe optical nekukurumidza.

3.modulator yesimba re acousto-optic
Nheyo huru: Yakavakirwa pamhedzisiro yeacousto-optic.
Maitiro ekushanda:
Gadzira mafungu e ultrasonic mukristaro kuti ugadzire girasi ine shanduko dze periodic refractive index.
Kana chiedza chikapfuura nepaburi remagetsi, kupararira kwechiedza kunoitika, uye kusimba kwechiedza chinopararira kwechiedza kunoenderana nekusimba kwemafungu eultrasonic. Nekudzora kusimba kana frequency yemafungu eultrasonic, kusimba kwechiedza chinobuda kunogona kugadziriswa.

4. Modulator yesimba remakristaro emvura
Nheyo huru: Kushandisa hunhu hwekristaro yemvura ichichinja kufambiswa kwayo pasi pesimba remagetsi.
Maitiro ekushanda:
Kurongeka kwemamorekuru emvura anochinja kana simba remagetsi rasvika, zvichikanganisa kufambiswa kwechiedza.
Nekushandisa mavoltage akasiyana kudzora kufambiswa kwekristaro dzemvura, simba rechiedza chinobuda rinogadziriswa, iro rinowanzoshandiswa muminda yekuratidza nekutora mifananidzo.
Mhando dzakasiyana dzema intensity modulators dzine hunhu hwadzo maererano nemisimboti, mashandiro, uye mamiriro ekushandisa, uye mhando yakakodzera inofanira kusarudzwa zvichienderana nezvinodiwa chaizvo.