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https://hdl.handle.net/11000/30648
Phase sensitive low-coherence interferometry using microwave
Title: Phase sensitive low-coherence interferometry using microwave |
Authors: Clement Bellido, Juan ![](/image/ORCID.jpg) Maestre, Haroldo ![](/image/ORCID.jpg) Torregrosa-Penalva, Germán ![](/image/ORCID.jpg) Fernandez-Pousa, Carlos ![](/image/ORCID.jpg) |
Editor: Optica Publishing Group |
Department: Departamentos de la UMH::Ingeniería de Comunicaciones |
Issue Date: 2020-09-14 |
URI: https://hdl.handle.net/11000/30648 |
Abstract:
We report on a low-coherence interferometer based on Microwave Photonics (MWP)
which allows, for the first time to the best of our knowledge, stable determination of the
interferogram’s phase. The interferometer is built on suppressed carrier, double-sideband
modulation, dispersive propagation in a chirped fiber Bragg grating, demodulation by electrooptical
frequency down-conversion, and suitable signal processing techniques to account for
modulation impairments. Taking as a reference a direct normalization of the link’s microwave
response, the system retrieves high-resolution interferograms, both in amplitude and phase
and free from distortion induced by higher-order dispersion, in an optical path difference of
16.3 mm, surpassing previously reported values based on MWP implementations. We present
representative applications targeted to the characterization of C-band sources and components,
such as direct analysis of interferograms with 5.5 fs temporal resolution, Fourier-transform
spectroscopy with 14 GHz spectral resolution, and optical low-coherence reflectrometry of the
impulse response’s amplitude of fiber Bragg gratings with 0.55 m spatial resolution.
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Knowledge area: CDU: Ciencias aplicadas: Ingeniería. Tecnología |
Type of document: application/pdf |
Access rights: info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional |
DOI: https://doi.org/10.1364/OE.403176 |
Appears in Collections: Artículos Ingeniería Comunicaciones
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