RT Conference Proceedings
T1 Enhancing optical feedback interferometry with an integrated variable optical attenuator.
A1 Arshad, Ayesha
A1 Zabit, Usman
A1 Bernal, Olivier
A1 Deleau, Clement
A1 Halir, Robert
K1 Interferometría
K1 Medidas ópticas
AB Optical feedback interferometry is a promising technique for displacement sensing. Maintaining stable and precise optical feedback requires effective control of reflected light intensity. In this study, we propose an integrated on-chip OFI system featuring a variable optical attenuator (VOA) for dynamic feedback regulation. We develop a novel analytical model and, through a realistic attenuator design, demonstrate the system’s capability to achieve high-precision displacement measurements over a wide optical feedback parameter range (2 < C < 100) for target distances up to a few centimetres. These results highlight the potential of this approach for short-range applications with variable reflection conditions, such as MEMS characterisation.
YR 2025
FD 2025-07-04
LK https://hdl.handle.net/10630/45360
UL https://hdl.handle.net/10630/45360
LA eng
NO Ministerio de Ciencia e Innovación
NO Agence nationale de la recherche
NO Universidad de Málaga
NO Unión Europea NextGenerationEU/PRTR
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 4 mar 2026