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Feedback Control in Silicon Photonic MEMS
KTH, School of Electrical Engineering and Computer Science (EECS).
KTH, School of Electrical Engineering and Computer Science (EECS).
2023 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

In this report, we study the implementation of a feedback control system to stabilizea MEMS device for applications in programmable photonic circuits. Specifically, the controller wasimplemented on an all-pass ring resonator, as it was the most suitable MEMS device to implementthe control system on.This study aims to show that it is possible to stabilize MEMS using a feedback loop, therebyreducing their sensitivity to temperature and noise. We present a solution that uses a programmablehardware platform to implement a PI controller and conduct measurements to demonstrate theefficacy of the proposed approach.We experimentally show that it is possible to stabilize the MEMS using the feedback controller,but our results suggest that the MEMS device needs to display a linear response to the control signal.We also suggest improvements to the lab set-up that could further improve our results and workaround the non-linearity problem.

Abstract [sv]

I denna rapport, studerar vi implementeringen av ett återkopplatreglersystem för att stabilisera en MEMS-enhet för tillämpningar inom programmerbara fotoniskakretsar. Specifikt, implementerades reglersystemet på en all-pass ringresonator då den var den mestlämplig MEMS-enhet att implementera reglersystemet på.Syftet med denna studie är att visa att det är möjligt att stabilisera MEMS med återkoppling ochdärigenom minska deras känslighet för temperatur och brus. Vi presenterar en lösning som använderen programmerbar hårdvaruplattform för att implementera en PI-regulator och göra mätningar föratt demonstrera funktionaliteten av den föreslagna lösningen.Vi visar experimentellt att det är möjligt att stabilisera MEMS med ett återkopplat reglersystem,men våra resultat tyder på att MEMS-enheterna behöver visa ett delvis linjärt svar tillkontrollsignalen. Dessutom föreslår vi förbättringar till labbuppsättningen som ytterligare kanoptimera våra resultat och jobba runt linearitets problemet.

Place, publisher, year, edition, pages
2023. , p. 321-326
Series
TRITA-EECS-EX ; 2023:163
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-341511OAI: oai:DiVA.org:kth-341511DiVA, id: diva2:1822029
Supervisors
Examiners
Projects
Kandidatexjobb i elektroteknik 2023, KTH, StockholmAvailable from: 2023-12-21 Created: 2023-12-21

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