A mudziyo wekuona fotomudziyo unoshandura masaini echiedza kuita masaini emagetsi. Munechishandiso chekuona mifananidzo che semiconductor, chinhu chinogadzirwa nemufananidzo chinokonzerwa ne photon chinopinda mudunhu rekunze pasi pe voltage inoshandiswa uye chinoita photocurrent inoyerwa. Kunyangwe paine mhinduro yepamusoro, pin photodiode inogona chete kugadzira maviri ema electron-hole pairs, inova mudziyo usina kuwedzera mukati. Kuti upindure zvakanyanya,photodiode yeavalanche(apd) inogona kushandiswa.
Kuwedzerwa kwe apd pa photocurrent kunobva pa ionization collision effect. Mune mamwe mamiriro ezvinhu, maerekitironi nemaburi anokurumidza anogona kuwana simba rakakwana kuti aroverane ne lattice kuti agadzire maviri matsva emaerekitironi nemaburi. Maitiro aya i chain reaction, zvekuti maviri emaerekitironi nemaburi anokonzerwa nekunyudzwa kwechiedza anogona kugadzira akawanda emaerekitironi nemaburi uye kugadzira photocurrent yakakura yechipiri. Naizvozvo, apd ine responsiveness yakakwira uye internal gain, izvo zvinovandudza signal-to-noise ratio yemudziyo. apd inonyanya kushandiswa mumasisitimu ekukurukurirana e optical fiber ari kure kana madiki ane zvimwe zvipingamupinyi pasimba re optical rinogamuchirwa. Parizvino, nyanzvi zhinji dze optical device dzine tariro huru nezve tarisiro ye apd.
Rofea yakazvigadzira yega photodetector yakabatanidzwa photodiode uye low noise amplifier circuit, uku ichipa zvigadzirwa zvakasiyana-siyana, kune vashandisi vesainzi vanopa sevhisi yekugadzirisa zvigadzirwa zvemhando yepamusoro, rutsigiro rwehunyanzvi uye sevhisi iri nyore mushure mekutengesa. Mutsetse wezvigadzirwa zvemazuva ano unosanganisira: analog signal photodetector ine amplification, gain adjustable photodetector,chishandiso chekuona mafoto chinomhanya zvikuru, chinoona nezvemusika wechando (APD), chinoona nezvekuenzanisa, nezvimwewo.
Chinhu
Rudzi rweSpectral：320-1000nm、850-1650nm、950-1650nm、1100-1650nm、1480-1620nm
3dBbandwidth：200MHz-50GHz
Optical fiber coupling goho 2.5Gbps
Rudzi rwemodulator
3dBbandwidt：
200MHz, 1GHz, 10GHz, 20GHz, 50GHz
Kushandiswa
Kuonekwa kwekurova kwemoyo kwemaziso nekukurumidza
Kutaurirana kwemaziso kwekukurumidza
Chinongedzo che microwave
Sisitimu yekuona fiber yeBrillouin optical
Nguva yekutumira: Chikumi-21-2023