{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T17:11:56Z","timestamp":1771089116749,"version":"3.50.1"},"posted":{"date-parts":[[2026]]},"group-title":"SSRN","reference-count":0,"publisher":"Elsevier BV","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>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 address this limitation, we present a novel interrogation framework that explores event-based vision to achieve high throughput, high bandwidth, and low-latency speckle analysis of a multimode optical fiber sensor. In addition, leveraging an optimized decomposition of the raw event streams through multi-point calibration and machine learning optimization, our approach also proves capable of isolating simultaneous deformations applied at distinct points. The experimental results validate the methodology by separating the signals of four piezoelectric actuators over a 400Hz - 20kHz range with minimal crosstalk applied over varying distances from 3cm to 75cm. Overall, these results establish event-driven speckle interrogation as a new versatile platform for real-time, multi-point acoustic sensing and pave the way for its application in complex and unstructured environments in future works.<\/jats:p>","DOI":"10.2139\/ssrn.6238572","type":"posted-content","created":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T16:43:21Z","timestamp":1771087401000},"source":"Crossref","is-referenced-by-count":0,"title":["Event-based Speckle Interrogation for High-BandwidthMulti-point Optical Fiber Sensing"],"prefix":"10.2139","author":[{"given":"Tom\u00e1s","family":"Lopes","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0009-0005-4721-385X","authenticated-orcid":true,"given":"Joana","family":"Teixeira","sequence":"additional","affiliation":[]},{"given":"Vicente","family":"Rocha","sequence":"additional","affiliation":[]},{"given":"Tiago","family":"Ferreira","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0463-9894","authenticated-orcid":true,"given":"Catarina","family":"Monteiro","sequence":"additional","affiliation":[]},{"given":"Pedro","family":"Jorge","sequence":"additional","affiliation":[]},{"given":"Nuno  A.","family":"Silva","sequence":"additional","affiliation":[]}],"member":"78","container-title":[],"original-title":[],"deposited":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T16:43:21Z","timestamp":1771087401000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ssrn.com\/abstract=6238572"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":0,"URL":"https:\/\/doi.org\/10.2139\/ssrn.6238572","relation":{},"subject":[],"published":{"date-parts":[[2026]]},"subtype":"preprint"}}