Kuenzanisa kwemasisitimu ekugadzira macircuit akabatanidzwa e photonic

Kuenzanisa kwemasisitimu ekugadzira macircuit akabatanidzwa e photonic
Mufananidzo 1 unoratidza kuenzanisa kwemasystem maviri ezvinhu, indium Phosphorus (InP) nesilicon (Si). Kushaikwa kweindium kunoita kuti InP ive chinhu chinodhura kupfuura Si. Nekuti macircuit akavakirwa pasilicon haanyanyi kukura zvakanyanya mu epitaxial, goho remacircuit akavakirwa pasilicon rinowanzo kuve rakakwirira kupfuura remacircuit eInP. Mumacircuit akavakirwa pasilicon, germanium (Ge), iyo inowanzo shandiswa chete muChinoongorora mufananidzo(zvinhu zvinoona chiedza), inoda kukura kwe epitaxial, nepo muInP systems, kunyange ma waveguides asingashande anofanira kugadzirwa nekukura kwe epitaxial. Kukura kweEpitaxial kunowanzova ne defect density yakakura kupfuura kukura kwe crystal imwe chete, senge kubva ku crystal ingot. Ma waveguides eInP ane high refractive index contrast chete mu transverse, nepo ma waveguides e silicon-based ane high refractive index contrast mu transverse ne longitudinal, izvo zvinobvumira zvishandiso zve silicon-based kuwana madiki bending radii uye mamwe ma compact structures. InGaAsP ine direct band gap, nepo Si naGe vasina. Nekuda kweizvozvo, InP material systems dzakanaka maererano ne laser efficiency. Ma intrinsic oxides eInP systems haana kugadzikana uye akasimba se intrinsic oxides eSi, silicon dioxide (SiO2). Silicon chinhu chakasimba kupfuura InP, zvichibvumira kushandiswa kwewafer sizes dzakakura, kureva kubva pa300 mm (munguva pfupi iri kutevera ichavandudzwa kusvika 450 mm) zvichienzaniswa ne75 mm muInP. InPmamodulatorkazhinji zvinoenderana nemhedzisiro yeStark ine quantum-confine, iyo inonzwa tembiricha nekuda kwekufamba kwebhendi kunokonzerwa netembiricha. Kusiyana neizvi, kutsamira kwetembiricha kwemodulators dzine silicon kudiki kwazvo.

Tekinoroji yeSilicon photonics inowanzoonekwa seyakakodzera zvigadzirwa zvakachipa, zvenguva pfupi, uye zvine huwandu hwakawanda (zvinopfuura zvidimbu miriyoni pagore). Izvi zvinodaro nekuti zvinogamuchirwa zvakanyanya kuti huwandu hwakawanda hwewafer hunodiwa kuti pave nemari yekuisa masiki nekugadzira, uye kutitekinoroji yesilicon photonicsine zvipingamupinyi zvakakura pakushanda kwayo mukushandiswa kwezvigadzirwa zvemumaguta nemaguta munzvimbo dzakasiyana uye kwenguva refu. Zvisinei, muchokwadi, zvakapesana ndizvo zvazviri. Mukushandiswa kwakaderera, kwenguva pfupi, kunobereka zvakawanda, vertical cavity surface-emitting laser (VCSEL) uyelaser yakananga-yakagadziriswa (Laser yeDML): laser yakagadziriswa zvakananga inokonzera kumanikidzwa kukuru kwemakwikwi, uye kushaya simba kwetekinoroji ye photonic yakavakirwa pasilicon iyo isingakwanise kubatanidza ma laser zviri nyore kwave dambudziko guru. Kusiyana neizvi, mu metro, mashandisirwo edaro refu, nekuda kwekusarudza kubatanidza tekinoroji ye silicon photonics uye digital signal processing (DSP) pamwe chete (izvo zvinowanzowanikwa munzvimbo dzinopisa zvakanyanya), zvinobatsira zvikuru kuparadzanisa laser. Pamusoro pezvo, tekinoroji yekuona coherent inogona kutsiva zvikanganiso zvetekinoroji ye silicon photonics zvakanyanya, senge dambudziko rekuti dark current idiki zvikuru pane local oscillator photocurrent. Panguva imwe chete, hazvina kunakawo kufunga kuti huwandu hwakawanda hwewafer hunodiwa kufukidza mari yemasiki nekugadzira, nekuti tekinoroji ye silicon photonics inoshandisa saizi dzema node dzakakura kupfuura ma complementary metal oxide semiconductors (CMOS) epamusoro-soro, saka masks anodiwa uye kugadzirwa kwemagetsi zvakachipa.