Simulation, Fabrication, and Characterization of a Sensitive SU-8-Based Fabry-Pérot MOEMS Accelerometer

Majid Taghavi, Hamid Latifi*, Gholam Mohammad Parsanasab, Abolfazl Abedi, Hamed Nikbakht, Mohammad Javad Sharifi

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review


This paper presents the design, fabrication, and characterization of a SU-8 four L-shaped beams optical micro-electro-mechanical-system accelerometer based on a Fabry-Pérot (FP) interferometer. An applied acceleration causes a displacement of the proof mass and changes the cavity of FP resonator. Fabrication process has been simplified such that only two photolithography steps are required and SU-8 is used for both the structural body and the sacrificial layer. To prevent the sacrificial layer from being exposed to UV light, a thin copper layer is coated by physical vapor deposition technique between the two SU-8 layers. The sensor chip consists of a proof mass which is suspended by four L-shaped springs. The movement of the proof mass in response to acceleration is detected by a FP cavity formed between the proof mass and the cleaved end of a single mode optical fiber. The fabricated sensor has a sensitivity of 12.5 μW/g and resonant frequency of 1872 Hz in the range of ±1 g.

Original languageEnglish
Article number8624416
Pages (from-to)1893-1902
Number of pages10
JournalJournal of Lightwave Technology
Issue number9
Publication statusPublished - 1 May 2019
Externally publishedYes


  • Fabry-Pérot resonator
  • L-shaped beam
  • micro-electro-mechanical-system (MEMS)
  • optical MEMS accelero-meter
  • photolithography
  • sensitivity
  • SU-8


Dive into the research topics of 'Simulation, Fabrication, and Characterization of a Sensitive SU-8-Based Fabry-Pérot MOEMS Accelerometer'. Together they form a unique fingerprint.

Cite this