Ibice bidakora bya silicon photonics

Ifotoniki za silikoniibice bidakora

Hari ibice byinshi by'ingenzi bitagaragara muri silicon photonics. Kimwe muri ibyo ni icyuma gitera amazi ku buso, nk'uko bigaragara ku Ishusho ya 1A. Kigizwe n'icyuma gikomeye gitera amazi ku buso gifite igihe kingana n'uburebure bw'umuraba w'urumuri muri icyuma gitera amazi ku buso. Ibi bituma urumuri rusohoka cyangwa rukakirwa rugororotse ku buso, bigatuma rukoreshwa neza mu gupima urugero rwa wafer cyangwa rugafatana na fibre. Ibikoresho bitera amazi ku buso ni umwihariko wa silicon photonics kuko bisaba itandukaniro rikomeye ry'umurongo ugororotse. Urugero, niba ugerageje gukora icyuma gitera amazi ku buso muri icyuma gitera amazi ku buso busanzwe bwa InP, urumuri ruhita rwinjira mu buso aho gusohoka ruhagaze kuko icyuma gitera amazi ku buso gifite ikigereranyo cyo hasi cyo kurekura ugereranyije n'icyuma gitera amazi ku buso. Kugira ngo gikore muri InP, ibikoresho bigomba gucukurwa munsi y'icyuma kugira ngo gihagarare, nk'uko bigaragara ku Ishusho ya 1B.

Ishusho ya 1: uduce dutanga ubushyuhe bw'ibara rimwe muri silikoni (A) na InP (B). Muri (A), imvi n'ubururu bwerurutse bigaragaza silikoni na silikoni, uko bikurikirana. Muri (B), umutuku n'umuhondo bigaragaza InGaAsP na InP uko bikurikirana. Ishusho (C) na (D) ni amashusho ya microscope ya electron (SEM) yerekana agace gatanga ubushyuhe ka InP gahagaze.

Ikindi kintu cy'ingenzi ni imashini ihindura ingano y'ahantu (SSC) hagati yaubuyobozi bw'amashushon'umunyungugu, uhindura uburyo bwa 0.5 × 1 μm2 muri silicon waveguide ukajya mu buryo bwa 10 × 10 μm2 muri fibre. Uburyo busanzwe ni ugukoresha imiterere yitwa inverse taper, aho umunyungugu ugenda ugabanuka buhoro buhoro ukagera ku gasongero gato, bigatuma habaho kwaguka gukomeye kwaitara ry'amasoUburyo bwo gupima. Ubu buryo bushobora gufatwa n'umurongo w'ikirahure uhagaze, nk'uko bigaragara ku Ishusho ya 2. Hamwe na SSC nk'iyo, igihombo cyo guhuza kiri munsi ya 1.5dB kiragerwaho byoroshye.

Ishusho ya 2: Ingano y'ibishushanyo ikoreshwa mu gupima insinga za silikoni. Ibikoresho bya silikoni bikora imiterere y'inyuma y'ikirahure gihagaze. Igice cya silikoni cyaciwe munsi y'ikirahure gihagaze.

Igice cy'ingenzi kidakora ni igikoresho cyo gutandukanya imirasire ya polarization. Ingero zimwe na zimwe z'ibikoresho byo gutandukanya imirasire ya polarization zigaragara ku Ishusho ya 3. Icya mbere ni interferometer ya Mach-Zender (MZI), aho buri kuboko gufite uburyo butandukanye bwo gutandukanya imirasire. Icya kabiri ni igikoresho cyoroshye cyo gukusanya icyerekezo. Uburyo bwo gutandukanya imirasire ya polarized ya silikoni isanzwe ni bwinshi cyane, bityo urumuri rwa polarized rwa magnetique (TM) rushobora guhuzwa neza, mu gihe urumuri rwa polarized rwa TE rushobora guhuzwa cyane. Icya gatatu ni igikoresho cyo gukusanya imirasire, aho fibre ishyirwa ku nguni kugira ngo urumuri rwa polarized rwa TE ruhuzwe mu cyerekezo kimwe n'urumuri rwa polarized rwa TM ruhuzwe mu kindi. Icya kane ni igikoresho cyo gukusanya imirasire gifite imiterere ibiri. Uburyo bwa fibre bufite amashanyarazi agororotse ajyanye n'icyerekezo cyo gukwirakwiza imirasire buhuzwa n'icyerekezo cy'umuraba ujyanye n'umuraba. Fibre ishobora guhindagurika no guhuzwa n'impande ebyiri z'umuraba, cyangwa igororotse ku buso no guhuzwa n'impande enye z'umuraba. Ikindi cyiza cy’ibice by’urukiramende bifite imiterere ibiri ni uko bikora nk’ibizunguruka bya polarization, bivuze ko urumuri rwose ruri kuri chip rufite polarization imwe, ariko polarizations ebyiri za orthogonal zikoreshwa muri fibre.

Ishusho ya 3: Ibice byinshi byo gutandukanya polarisation.