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Ana Dinora Guzman-Chavez   Dr.  University Educator/Researcher 
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Ana Dinora Guzman-Chavez published an article in June 2018.
Top co-authors See all
Julián Moisés Estudillo-Ayala

94 shared publications

Univ. de Guanajuato (Mexico)

Roberto Rojas-Laguna

43 shared publications

Univ. de Guanajuato (Mexico)

Daniel Jauregui-Vazquez

35 shared publications

Univ. de Guanajuato (Mexico)

Raja Kamarulzaman Raja Ibrahim

8 shared publications

Faculty of Science, Department of Physics, Universiti Teknologi Malaysia, Johor Bahru, Malaysia

Eloisa Gallegos-Arellano

6 shared publications

Univ. Tecnológica de Salamanca (Mexico)

Publication Record
Distribution of Articles published per year 
(2013 - 2018)
Total number of journals
published in
Publications See all
Article 0 Reads 0 Citations Tailored Algorithm for Sensitivity Enhancement of Gas Concentration Sensors Based on Tunable Laser Absorption Spectrosco... Everardo Vargas-Rodriguez, Ana Dinora Guzman-Chavez, Roberto... Published: 04 June 2018
Sensors, doi: 10.3390/s18061808
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
In this work, a novel tailored algorithm to enhance the overall sensitivity of gas concentration sensors based on the Direct Absorption Tunable Laser Absorption Spectroscopy (DA-ATLAS) method is presented. By using this algorithm, the sensor sensitivity can be custom-designed to be quasi constant over a much larger dynamic range compared with that obtained by typical methods based on a single statistics feature of the sensor signal output (peak amplitude, area under the curve, mean or RMS). Additionally, it is shown that with our algorithm, an optimal function can be tailored to get a quasi linear relationship between the concentration and some specific statistics features over a wider dynamic range. In order to test the viability of our algorithm, a basic C2H2 sensor based on DA-ATLAS was implemented, and its experimental measurements support the simulated results provided by our algorithm.
Article 0 Reads 2 Citations Gas Sensor Design Based on a Line Locked Tunable Fiber Laser and the Dual Path Correlation Spectroscopy Method Everardo Vargas-Rodriguez, Ana Dinora Guzman-Chavez, Raja Ka... Published: 19 September 2017
Applied Sciences, doi: 10.3390/app7090958
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In this work a hybrid gas sensor based on a tunable fiber laser and a correlation spectroscopy technique is presented. The laser is tuned by varying the temperature of a bulk silicon wafer of 85 μm thickness and, once the desired wavelength is reached the line, is locked by keeping fixed its temperature. According to experimental results the wafer temperature variation was in the order of 0.02 K, which induced an estimated wavelength deviation of 0.12 pm, which satisfies the high wavelength position accuracy required for gas sensing applications. Additionally, it is shown that errors due to laser intensity fluctuations can be minimized by implementing a simple dual path correlation spectroscopy stage. As a proof of the suitability of our tunable fiber laser for gas sensing applications, a C2H2 sensor was implemented. By using a 10 cm gas cell at atmospheric pressure, it was possible to detect concentrations from 0 to 20% with a sensitivity of 521 ppm and sub-minute time response. Moreover, the experimental measurements and simulated results have a high level of agreement. Finally, it is important to point out that, by using doped fiber with different characteristics, other wavelength emissions can be generated.
Article 3 Reads 6 Citations A Core-Offset Mach Zehnder Interferometer Based on A Non-Zero Dispersion-Shifted Fiber and Its Torsion Sensing Applicati... Eduardo Huerta-Mascotte, Juan M. Sierra-Hernandez, Ruth I. M... Published: 10 June 2016
Sensors, doi: 10.3390/s16060856
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In this paper, an all-fiber Mach-Zehnder interferometer (MZI) based on a non-zero dispersion-shifted fiber (NZ-DSF) is presented. The MZI was implemented by core-offset fusion splicing one section of a NZ-DSF fiber between two pieces of single mode fibers (SMFs). Here, the NZ-DSF core and cladding were used as the arms of the MZI, while the core-offset sections acted as optical fiber couplers. Thus, a MZI interference spectrum with a fringe contrast (FC) of about 20 dB was observed. Moreover, its response spectrum was experimentally characterized to the torsion parameter and a sensitivity of 0.070 nm/° was achieved. Finally, these MZIs can be implemented in a compact size and low cost.
Article 0 Reads 0 Citations Analytical Modelling of a Refractive Index Sensor Based on an Intrinsic Micro Fabry-Perot Interferometer Everardo Vargas-Rodríguez, Ana D. Guzman-Chavez, Martin Cano... Published: 15 October 2015
Sensors, doi: 10.3390/s151026128
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In this work a refractive index sensor based on a combination of the non-dispersive sensing (NDS) and the Tunable Laser Spectroscopy (TLS) principles is presented. Here, in order to have one reference and one measurement channel a single-beam dual-path configuration is used for implementing the NDS principle. These channels are monitored with a couple of identical optical detectors which are correlated to calculate the overall sensor response, called here the depth of modulation. It is shown that this is useful to minimize drifting errors due to source power variations. Furthermore, a comprehensive analysis of a refractive index sensing setup, based on an intrinsic micro Fabry-Perot Interferometer (FPI) is described. Here, the changes over the FPI pattern as the exit refractive index is varied are analytically modelled by using the characteristic matrix method. Additionally, our simulated results are supported by experimental measurements which are also provided. Finally it is shown that by using this principle a simple refractive index sensor with a resolution in the order of 2.15 × 10−4 RIU can be implemented by using a couple of standard and low cost photodetectors.
Article 0 Reads 1 Citation Refractive index sensing setup based on a taper and an intrinsic micro Fabry-Perot interferometer M. Cano-Contreras, A. D. Guzman-Chavez, Everardo Vargas-Rodr... Published: 16 August 2015
Journal of the European Optical Society: Rapid Publications, doi: 10.2971/jeos.2015.15039
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In this work, a refractive index sensor setup based on a biconically tapered fiber (BTF) concatenated to an intrinsic all-fiber micro Fabry-Perot interferometer (MFPI) is presented. Here, the power of the MFPI spectral fringes decreases as the refractive index interacts with theevanescent field of the BTF segment. Furthermore, it is demonstrated that the RI sensitivity can be enhanced by bending the BTF segment.Finally, it is shown that by using this sensing arrangement, at ~1.53 µm wavelength, it is possible to detect refractive index changeswithin the measurement range of 1.3 to 1.7 RIU, with a sensitivity of 39.92 dB/RIU and a RI resolution of 2.5 x 10
Article 0 Reads 4 Citations All-Fiber Curvature Sensor Based on an Abrupt Tapered Fiber and a Fabry–Pérot Interferometer Martin Cano-Contreras, Ana D. Guzman-Chavez, Ruth I. Mata-Ch... Published: 15 November 2014
IEEE Photonics Technology Letters, doi: 10.1109/lpt.2014.2349979
DOI See at publisher website