Phase sensitive low-coherence interferometry using microwave photonics

被引：1
|
作者：
Clement, Juan [1 ]
Maestre, Haroldo [1 ]
Torregrosa, German [1 ]
Fernandez-Pousa, Carlos R. [1 ]
机构：
[1] Univ Miguel Hernandez, Engn Res Ctr I3E, Dep Commun Engn, Elche 03202, Spain
来源：
OPTICS EXPRESS | 2020年 / 28卷 / 21期
关键词：
FREQUENCY-DOMAIN REFLECTOMETRY; FOURIER-TRANSFORM SPECTROMETER; FIBER BRAGG GRATINGS; HIGH-RESOLUTION; OPTICAL-FIBERS; DISPERSION; REFLECTIVITY; WAVELENGTH; SENSOR; FILTER;
D O I：
10.1364/OE.403176
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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 mu m spatial resolution. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：30432 / 30446
页数：15
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