The optical MEMS advantage
The improvement of the key microphone parameters for MEMS microphones has today reached a ceiling. A new transducer technology is required to make a significant leap in performance – optical MEMS!
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Ultra-low self-noise readout principle
sensiBel’s patented optical MEMS technology is based on the optical phenomena of interference and diffraction, both of which are due to the wave character of light. In simple terms, the microphone uses a tiny energy-efficient laser in combination with a miniaturised and integrated interferometer to measure extremely accurately the motion of a silicon-based membrane. The entire optical system is in fact smaller than a cubic millimeter! This ultra-low self-noise readout principle gives the high SNR and AOP characteristic, yet in a small MEMS package with low power consumption.
Additional benefits the optical MEMS transducer system are enhanced environmental robustness e.g. against dust, and significantly reduced likelihood for stiction (the membrane stuck to the backplate).
Small size. Extremely capable.
True studio-quality audio in a small MEMS package with optical technology
Crystal clear recordings
True studio-quality audio recordings
Super directivity beam-forming solutions
Noise-free ANC and ambient mode headphones
Distortion proof in high-noise environments
Capture very loud sounds with no clipping
High dynamic range
Flexible platform solution
Selection of digital interfaces
System cost optimized
White paper - How optical technology enables a generational shift in MEMS microphone performance
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