title: Experimental demonstration of a sensing mechanism for optical-fiber intermodal interference sensors.
abstract: A series of experiments in which a multimode optical fiber was forced to vibrate by a loudspeaker was performed to investigate the sensing mechanism of an integrated optical-fiber communication-sensing system. It was demonstrated that the sensing mechanism is predominantly pressure-induced phase modulation rather than modecoupling-induced power transfer in an optical fiber.
authors.forename: K Y
authors.initials: KY
authors.lastname: Chen
authors.forename: C Y
authors.initials: CY
authors.lastname: Leung
authors.forename: I F
authors.initials: IF
authors.lastname: Chang