Photonic hadedde circuit (PIC) tsarin abu

Photonic hadedde circuit (PIC) tsarin abu

Silicon photonics wani horo ne wanda ke amfani da tsarin tsarawa bisa kayan silicon don jagorantar haske don cimma ayyuka iri-iri. Mun mayar da hankali a nan a kan aikace-aikace na silicon photonics a samar da watsawa da kuma masu karɓa don fiber optic sadarwa. Yayin da ake buƙatar ƙara ƙarin watsawa a bandwidth da aka ba, sawun da aka ba da, da kuma ƙimar da aka ba da kyauta, silicon photonics ya zama mafi kyawun tattalin arziki. Domin bangaren gani,fasahar haɗin kai na photonicdole ne a yi amfani da su, kuma yawancin masu haɗawa a yau an gina su ta amfani da keɓancewar LiNbO3/planar light-wave circuit (PLC) da masu karɓar InP/PLC.

Hoto 1: Yana Nuna tsarin kayan abu da aka saba amfani da shi (PIC).

Hoto 1 yana nuna shahararrun tsarin kayan PIC. Daga hagu zuwa dama sune silica na tushen silica PIC (wanda kuma aka sani da PLC), PIC insulator na tushen silicon (silicon photonics), lithium niobate (LiNbO3), da PIC na III-V, kamar InP da GaAs. Wannan takarda tana mayar da hankali ne akan photonics na tushen silicon. A cikisilicon photonics, siginar haske ya fi tafiya a cikin siliki, wanda ke da tazarar band ta kai tsaye na 1.12 volts na lantarki (tare da tsawon 1.1 microns). Ana shuka siliki a cikin nau'in lu'ulu'u masu tsabta a cikin tanderu sannan a yanka a cikin waƙa, wanda a yau yawanci 300 mm a diamita. Wurin wafer yana da oxidized don samar da siliki Layer. Ɗaya daga cikin wafers an jefar da shi da hydrogen atom zuwa wani zurfin zurfi. Ana haɗa wafers biyu a cikin injin daskarewa kuma yadudduka na oxide ɗin su suna haɗuwa da juna. Taron ya karye tare da layin dasa hydrogen ion. Sa'an nan kuma ana goge Layer na siliki a cikin tsaga, a ƙarshe yana barin wani ɗan ƙaramin lu'u-lu'u na crystalline Si a saman madaidaicin wafer siliki "hannu" a saman silica Layer. Ana yin waveguides daga wannan siraren crystalline Layer. Duk da yake waɗannan wafers na tushen silicon (SOI) suna yin ƙarancin asarar silicon photonics waveguides mai yuwuwa, a zahiri ana amfani da su a cikin ƙananan da'irori na CMOS masu ƙarancin ƙarfi saboda ƙarancin ƙarancin halin yanzu da suke bayarwa.

Akwai yuwuwar nau'ikan nau'ikan raƙuman gani na siliki, kamar yadda aka nuna a cikin Hoto 2. Suna fitowa daga microscale germanium-doped silica waveguides zuwa nanoscale Silicon Wire waveguides. Ta hanyar haɗuwa da germanium, yana yiwuwa a yimasu daukar hotoda kuma sha na lantarkimasu daidaitawa, kuma mai yiyuwa har ma da amplifiers na gani. By doping silicon, anna gani modulatorza a iya yi. Kasa daga hagu zuwa dama sune: jagorar waya na siliki, silicon nitride waveguide, silicon oxynitride waveguide, silicon ridge waveguide, bakin ciki silicon nitride waveguide da doped silicon waveguide. A saman, daga hagu zuwa dama, akwai na'urori masu daidaitawa, germanium photodetectors, da germanium.na gani amplifiers.

Hoto 2: Sashe na ketare na jerin jagororin gani na gani na tushen silicon, yana nuna hasarar yaduwa na yau da kullun da fihirisa masu juyawa.