Sensor-based position feedback for miniaturized piezoelectric fiber optic scanners

Gerardo E. González-Cerdas; Caglar Ataman; Hans Zappe; Shahab Haidarian

doi:10.1117/12.2655329

17 March 2023 Sensor-based position feedback for miniaturized piezoelectric fiber optic scanners

Gerardo E. González-Cerdas, Caglar Ataman, Hans Zappe, Shahab Haidarian

Proceedings Volume 12434, MOEMS and Miniaturized Systems XXII; 124340G (2023) https://doi.org/10.1117/12.2655329
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We present a sensor-based, real-time position feedback mechanism for piezoelectric fiber-based optical scanners. In this method, a micro-magnet attached to the tip of the fiber cantilever generates a three-dimensional magnetic field that can be measured by a micro-sized 3D Hall sensor embedded in the cap of the endoscopic probe. A previously recorded mapping between the magnetic field distribution on the sensor and the corresponding spatial location of the magnet, which is invariant with respect to the scanner operation, can then be used at any given time to recall the position of the laser spot on the imaging plane.

Conference Presentation

Citation Download Citation

Gerardo E. González-Cerdas, Caglar Ataman, Hans Zappe, and Shahab Haidarian "Sensor-based position feedback for miniaturized piezoelectric fiber optic scanners", Proc. SPIE 12434, MOEMS and Miniaturized Systems XXII, 124340G (17 March 2023); https://doi.org/10.1117/12.2655329

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