Fiber-coupled position sensors for aerospace applications

Huggins, Raymond W.; Abbas, Gregory L.; Hong, Chi-Shain; Miller, Gary E.; Porter, Christopher; Deventer, B. Van

doi:10.1016/0143-8166(92)90002-o

Cited by 8 publications

(3 citation statements)

References 10 publications

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“…Compared to electrical interconnection, it can better meet the requirements of data storage and transmission of communication network in the big data era [1] - [3]. As a fundamental component of sensors [4], [5], switchers [6], and modulators [7] - [9], directional coupler is also widely used in optical interconnection for its ultra-compact structure and rather low loss. However, a majority of conventional directional couplers suffer from polarization dependence.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid-Plasmonic-Waveguide-Based Polarization-Independent Directional Coupler

et al. 2020

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In optical interconnection field, inconsistent coupling behaviors of TE and TM modes may cause abnormal operation. Therefore, it is very significant to implement a polarization-independent directional coupler. In this paper, a hybrid-plasmonic-waveguide-based polarization-independent directional coupler has been proposed. Since the energy of the hybrid plasmonic waveguides for TE and TM modes is distributed in different layers, we manage to achieve polarization independence by adjusting the material properties and dimensions of the corresponding layer. We optimize the parameters of our proposed directional coupler such as radius of silicon waveguide layer, height of silica waveguide layer, and the distance between the two waveguides, etc. Then performance of the directional coupler has been evaluated. It is worth mentioning that the length of the coupling section is only 4.25 μm. Meanwhile, the polarization-dependent loss is only 0.393 dB, and the maximum coupling efficiency of TE and TM modes can reach 86.4% and 94.6%, respectively. Besides, the coupling efficiency of TM mode remains above 90% over the entire C-band, while the coupling efficiency also keeps at least 80% for TE mode. Finally, the manufacture process for the proposed directional coupler has been discussed. In brief, the improved polarization-independent directional coupler features small size, low energy loss, good polarization-independent characteristics, and wavelength insensitivity simultaneously. Compared to the other counterparts ever proposed, our proposed coupler can provide a perfect trade-off between device size and loss, which shows important potential applications in the fields of PIC and optical interconnection.

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Section: Introductionmentioning

confidence: 99%

A Hybrid-Plasmonic-Waveguide-Based Polarization-Independent Directional Coupler

et al. 2020

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“…Los avances en el estudio del comportamiento de diversas propiedades físicas han originado el uso de nuevas y mejoradas técnicas que proporcionan una medición más exacta, donde el tiempo de adquisición se ve reducido y el elemento analizado no se vea dañado, razones por las que el uso la metrología óptica ha adquirido gran aceptación dentro de diversas áreas de la ciencia (Huggins, 1992). En general, las técnicas que involucran la metrología óptica implican el uso de imágenes generadas por superposición de frentes de onda, donde la fuente tiene características de coherencia y monocromaticidad.…”

Section: Introductionunclassified

Metrología óptica en el estudio de eventos dinámicos

López-Álvarez

Peña-Lecona

Jara-Ruiz

et al. 2020

JID

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The evolution over time of structural changes in materials is of great importance in various areas of science, its study involves determining the phase with the change in the intensity of the physical properties to be measured. In this work, the use of Phase Displacement Interferometry PSI is presented using a combination algorithm of five interferograms or five steps, the results are compared with the addition of the states studied in the dynamic event, exposed in the Digital Holographic Interferometry DHI. The deformation was simulated from a rotating system in the coordinates (x, y). The results suggest that the phase map of the changing events with time that are calculated with PSI of five steps may have a relationship with the average of each change point of the dynamic event, with a difference of 0.96 radians.

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“…The development of systems for the measurement of physical variables has applications in different industrial areas such as automotive, naval, aerospace, biochemistry, and even medicine (Huggins, 1992), (Aguado, 2017(Aguado, ), (X.J., 2003.Technological advances require that these devices present design and operation advantages over every day industrial instrumentation (Giallorenzi, 1982), so the incorporation of devices with micro-scale technology would meet the size and accessibility requirements, however, these imply a complicated construction and design process (Chikovani, 2017).…”

Section: Introductionmentioning

confidence: 99%

Increased intensity of interference fringes in Digital Holography

López-Álvarez

Peña-Lecona

Jara-Ruiz

et al. 2020

JTD

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Digital holographic interferometry is a full field optical technique, used in the measurement of dynamic and non-contact events, this technique works with arrays where the initial acquisition of interference fringes is not necessary, but rather involves the superposition of two wave fronts. Where from the holograms and by means of a Fourier window-based processing it is feasible to recover the information of both intensity and phase. However, the interference fringes resulting from the demodulation of the holograms may have low intensity, affecting their subsequent analysis. In this work, the combination of the holographic techniques, filters and the superposition principle is proposed to increase the intensity of the fringes, the results show that using the Fourier method in combination with the superposition theorem is possible to obtain greater intensity between the minimum and maximum of the fringes.

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Fiber-coupled position sensors for aerospace applications

Cited by 8 publications

References 10 publications

A Hybrid-Plasmonic-Waveguide-Based Polarization-Independent Directional Coupler

A Hybrid-Plasmonic-Waveguide-Based Polarization-Independent Directional Coupler

Metrología óptica en el estudio de eventos dinámicos

Increased intensity of interference fringes in Digital Holography

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