4 papers
Quantum Imaging of Birefringent Samples using Hong-Ou-Mandel Interference
Carolina Gonçalves, Tiago D. Ferreira, Catarina S. Monteiro +1
Two-photon interference in a Hong-Ou-Mandel (HOM) interferometer can be used as a quantum sensing mechanism due to the sensitivity of the interference dip to perturbations of the p…
Event-based Speckle Interrogation for High-Bandwidth Multi-point Optical Fiber Sensing
Tomás Lopes, Joana Teixeira, Vicente V. Rocha +4
Speckle-based fiber optic sensors are well-known to offer high sensitivity but are strongly limited on the interrogation side by low camera frame rates and dynamic range. To addres…
Multimodal Speckle-polarization Fiber-optic Sensing for Localized and High-bandwidth Vibration Monitoring
Catarina S. Monteiro, Tomás Lopes, Joana Teixeira +3
High-bandwidth and multi-point acoustic and vibration sensing is a critical asset for real-time condition monitoring, maintenance, and surveillance applications. In the case of lar…
High-Precision Acoustic Event Monitoring in Single-Mode Fibers Using Fisher Information
Catarina S. Monteiro, Tiago D. Ferreira, Nuno A. Silva
Polarization optical fiber sensors are based on modifications of fiber birefringence by an external measurand (e.g. strain, pressure, acoustic waves). Yet, this means that differen…