Silicon Photonics ibice bigize passiyo

Amafoto ya Siliconibice

Hano haribintu byinshi byingenzi bigize pasiporo muri silicon Photonics. Kimwe muri ibyo ni ubuso busohora ibintu bifatika, nkuko bigaragara ku gishushanyo 1A. Igizwe no gufatira gukomeye muri waveguide igihe cyayo kingana hafi nuburebure bwumuraba wumucyo mumurongo. Ibi bituma urumuri rusohoka cyangwa rwakirwa perpendicular hejuru yubuso, bigatuma biba byiza kubipimo byo murwego rwa wafer na / cyangwa guhuza fibre. Gushimira guhuza bimwe bidasanzwe kuri silikoni ya fotonike kuko ikenera itandukaniro rihanitse. Kurugero, niba ugerageje gukora cope ya grater muri InP waveguide isanzwe, urumuri rusohoka muri substrate aho kugirango rusohore mu buryo buhagaritse kuko urusaku rwerekana amashanyarazi rufite igipimo cyo hasi cyo kwangirika kurenza substrate. Kugirango ikore muri InP, ibikoresho bigomba gucukurwa munsi ya gritingi kugirango bihagarike, nkuko bigaragara ku gishushanyo 1B.

Igishushanyo 1: gusohora hejuru-imwe yo gufatira hamwe muri silicon (A) na InP (B). Muri (A), ibara ryijimye nubururu byerekana silikoni na silika. Muri (B), umutuku na orange byerekana InGaAsP na InP. Imibare (C) na (D) irimo gusikana amashusho ya microscope ya electron (SEM) ya InP yahagaritswe cantilever grating coupler.

Ikindi kintu cyingenzi kigize umwanya-uhindura (SSC) hagati yaoptiquena fibre, ihindura uburyo bwa 0.5 × 1 μ m2 muri silicon waveguide muburyo bwa 10 × 10 μ m2 muri fibre. Uburyo busanzwe ni ugukoresha imiterere yitwa inverse taper, aho umurongo wa waveguide ugenda ugabanuka gahoro gahoro, bikavamo kwaguka gukomeye kwaoptiqueUbwoko. Ubu buryo bushobora gufatwa nikirahuri cyahagaritswe, nkuko bigaragara ku gishushanyo cya 2. Hamwe na SSC nkiyi, igihombo cyo guhuza munsi ya 1.5dB kiragerwaho byoroshye.

Igishushanyo 2: Ingano yubunini bwa silicon wire waveguides. Ibikoresho bya silicon bigize imiterere ihindagurika imbere yikirahure cyahagaritswe. Substrate ya silicon yashyizwe munsi yikirahure cyahagaritswe.

Urufunguzo rwibanze ni polarisiyasi yamashanyarazi. Ingero zimwe zo gutandukanya polarisiyasi zerekanwa mu gishushanyo cya 3. Iya mbere ni Mach-Zender interferometer (MZI), aho buri kuboko gufite birefringence itandukanye. Iya kabiri ni icyerekezo cyoroshye. Imiterere birefringence yumurongo wa silikoni isanzwe ya wireguide ni ndende cyane, bityo urumuri rwa transitike ya magnetiki (TM) urumuri rwinshi rushobora guhuzwa rwose, mugihe urumuri rwamashanyarazi (TE) rufite urumuri rushobora kuba rudasanzwe. Icya gatatu ni urusyo rusya, aho fibre ishyirwa kuri Angle kuburyo urumuri rwa TE polarize ruhujwe mu cyerekezo kimwe naho urumuri rwa TM rukomatanye rundi. Iya kane ni ibice bibiri-byo gusya. Uburyo bwa fibre imirima yumuriro iringaniye nicyerekezo cyo gukwirakwiza umurongo uhujwe na waveguide ihuye. Fibre irashobora kugororwa no guhuzwa na fluxide ebyiri, cyangwa perpendicular hejuru yubuso hanyuma igahuzwa na bine yumurongo. Inyungu yongeyeho kubintu bibiri-bifatanyiriza hamwe ni uko ikora nka rotorisiyo ya polarisiyasi, bivuze ko urumuri rwose kuri chip rufite polarisiyasi imwe, ariko polarizasiyo ebyiri ikoreshwa muri fibre.

Igishushanyo 3: Amacakubiri menshi.