Basiction yakakosha yeye Optical modulator

Optical Modulator.
Optical Modulator ndiyo imwe yakakosha yakakanganisika Optical midziyo mune yakakwira-kumhanya uye pfupi-huwandu hwepfungwa. Mirairo yakajeka maererano nemitemo yayo yekufungidzira, inogona kukamurwa kuita electro-optic, acoustooptic, etcooptic mhedzisiro, franz-keltysh maitiro, franz-kelty

The theElectro-Optical ModulatorChishandiso chinodzora indekisi yekudzora, kubuda kweiyo, amplitude kana chikamu chechiedza chechiedza kuburikidza nekuchinja kweVoltage kana munda wemagetsi. Iyo yakakwirira kune mamwe marudzi evanovamanikidza maererano nekurasikirwa, kunwa simba, kumhanya uye kubatanidzwa, uye zvakare ndiyo modulate zvakanyanya. Mukuita kwekutapurirana kwechokwadi, kutapurirana uye kugamuchira, iyo modlatoror inoshandiswa kudzora kukura kwechiedza, uye basa rayo rakakosha.

Chinangwa chekushandura chiedza ndechekushandura chiratidzo chaunoda kana ruzivo runotapurwa, zvinosanganisira "kubvisa chiratidzo chekusimudzira, kubvisa ruzha, nekukanganisa", kuti zviite nyore kuita, kuendesa uye kuendesa uye kuwongorora.

Mhando dzekushandura dzinogona kukamurwa kuita zvikamu zviviri zvepamusoro zvichienderana nepapo ruzivo rwunoremerwa pane iyo mwenje wave:

Imwe isimba rekutyaira reiyo mwenje wechiedza wakashandurwa nemazwi emagetsi; Imwe ndeyekunyatso tungamira nhepfenyuro zvakananga.

Iyo yekutanga inonyanya kushandiswa kutaurirana kwechokwadi, uye iyo yekupedzisira inonyanya kushandiswa pakunzwa kwechokwadi. Ye pfupi: Yemukati modulation uye modulation yekunze.

Maererano neiyo nzira yekunyungudika, iyo modulation mhando ndeye:

1) Kuwedzeredza kusimba;

2) Chikamu chePhae;

3) kududzira kwepamhepo;

4) kuwanda uye wavelength adation.

1.1, kusimba kwekuwedzera

Kuvhenekesa kusimba kwekusimbisa kwechiedza sechinhu chinoshandiswa, kushandiswa kwezvinhu zvekunze zvekushandurwa kweCCASTENCY Signal Signs

1.2, Chikamu chePhia

Nheyo yekushandisa zvekunze kuti ichinje chikamu chemafungu emwenje uye kuyera huwandu hwemuviri nekuona shanduko yechikamu inonzi Optical phase modulation.

Chikamu chechiedza chakatsanangurwa nekureba kwekuparadzira kwepfungwa, iyo indekisi yekuparadzira yepfungwa uye kugoverwa kwechikamu chechiedza inogona kugadzirwa nekuchinja ma paramita ari pamusoro kuti uwane modulation.

Nekuti iyo yeChiedza Kuona kazhinji haigone kuona shanduko yechiedza, isu tinofanira kushandisa tekinoroji yekuvhiringidzika kwekushanduka kwemukati Yechipiri ndiko kukanganisa kwechiedza.

1.3. Polization Modulation

Nzira iri nyore yekuzadzisa modulation yechiedza ndeyekutenderera maviri polarizer zvinoenderana nemumwe. Sekureva kwa Malus 'Theorem, iyo yekubuda pachena kuwanda i = i0cos2α

Iko: i0 inomiririra kuwanda kwechiedza kwakapfuura nemapurisa maviri apo ndege huru ichisanganisira; Alfa inomiririra kona pakati pematare maviri emapiriyoni.

1.4 Frequency uye Wavelength Youdation

Iyo nheyo yekushandisa zvekunze kuti ichinje kuwanda kana kuwanda kwechiedza uye kuyera kwekunze huwandu hwenzvimbo nekutsvaga shanduko kana wavelength yechiedza inonzi frequency uye wavelength kushandurwa kwechiedza.