Optical flowmeter using a modal interferometer based on a single nonadiabatic fiber taper
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Updated: Jul 13, 2026

16:11
Implementation of a Reference Interferometer for Nanodetection
Published on: April 26, 2014
O Frazão1, P Caldas, F M Araújo
1INESC Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal. ofrazao@inescporto.pt
Optics Letters
|July 17, 2007
Abstract:
A novel in-fiber modal interferometer is presented that is based on a nonadiabatic biconical fused taper that couples light between the cladding and the core, combined with the Fresnel reflection at the fiber end. It is observed that the returned light from this fiber structure shows a channeled spectrum similar to that of a two-wave Michelson interferometer. The application of this device as a fiber optic flowmeter sensor is demonstrated.

