Showing papers in "Journal of Modern Optics in 2020"
TL;DR: The proposed cryptosystem provides the security of the digital images using the cryptographic algorithm in the frequency domain of the image using 2D discrete Haar wavelet transform (DHWT) and 3D logistic chaotic map.
Abstract: This paper proposes a new lossless encryption and decryption method for digital colour-image using 2D discrete Haar wavelet transform (DHWT) and 3D logistic chaotic map. The proposed cryptosystem p...
38 citations
TL;DR: In this paper, the applications of a new function introduced by Kudryashov to obtain solitary wave solutions of nonlinear PDEs through their travelling wave reductions are considered.
Abstract: Applications of a new function introduced by Kudryashov [Optik. 2020;206:163550] to obtain solitary wave solutions of nonlinear PDEs through their travelling wave reductions are considered. The Kud...
28 citations
TL;DR: In this article, a simple, compact, in-line Fresnel incoherent digital holography was presented, which can be used for single-shot and incoherent imaging.
Abstract: Single-shot and incoherent imaging are two important properties of digital holography that can extend its application range. In this study, a simple, compact, in-line Fresnel incoherent digital hol...
24 citations
TL;DR: In this article, a new type of passive saturable absorber made of transition metal oxide (TMO) embedded in polyvinyl alcohol (PVA) was reported, and the Tungsten trioxide (WO3)-PVA SA was placed in an...
Abstract: This paper reports a new type of passive saturable absorber (SA) made of transition metal oxide (TMO) embedded in polyvinyl alcohol (PVA). The Tungsten trioxide (WO3)-PVA SA is placed in an...
20 citations
TL;DR: An all-fibre, noise-like pulse (NLP) mode locked double-clad thulium-doped fiber laser (DC-TDFL) with integrated figure-of-eight nonlinear optical loop mirror (NOLM) is demonstrated in this article.
Abstract: An all-fibre, noise-like pulse (NLP) mode locked double-clad thulium-doped fibre laser (DC-TDFL) with integrated figure-of-eight nonlinear optical loop mirror (NOLM) is demonstrated. The mo...
19 citations
TL;DR: In this article, the preparation of polymer-dispersed liquid crystal (PDLC) films based on meth(acrylate) monomers containing rigid structures is investigated. But the method is not suitable for the case of rigid structures.
Abstract: This contribution investigates the preparation of polymer-dispersed liquid crystal (PDLC) films based on meth(acrylate) monomers containing rigid structures. The current study specifically focuses ...
18 citations
TL;DR: In this article, the unique features of the reflective semiconductor optical amplifiers (RSOAs) are exploited to numerically simulate the ultrafast performance of an all-optical Not-AND (NAND) logic.
Abstract: In this paper, the unique features of the reflective semiconductor optical amplifiers (RSOAs) are exploited to numerically simulate the ultrafast performance of an all-optical NOT-AND (NAND) logic ...
17 citations
TL;DR: Results demonstrate that the proposed cryptosystem has higher robustness against noise and special attacks.
Abstract: In this paper, a double image encryption mechanism for iris template protection using 3D Lorenz chaotic system with modified equal modulus decomposition in the hybrid transform domain is proposed. ...
16 citations
TL;DR: In this paper, an improved phase calibration method of a reflective SLM using interferometry by employing novel phase masks was developed, which definitively determined the actual maximum phase throw of the SLM.
Abstract: We develop an improved phase calibration method of a reflective SLM using interferometry by employing novel phase masks. In the process, we definitively determine the actual maximum phase throw of ...
14 citations
TL;DR: Comparison results with the state-of-the-art methods showed it can obtain a competitive accuracy and may pay a way to apply the proposed model in the fibre optic Raman instruments for intra-operative evaluation of OTSCC resection margins.
Abstract: To detect oral tongue squamous cell carcinoma (OTSCC) using fibre optic Raman spectroscopy, we present a classification model based on convolutional neural networks (CNN) and support vector machine...
13 citations
TL;DR: In this article, a spirally filled solid core chalcogenide-based photonic crystal fiber is proposed, which is engineered to obtain a flattened broad anomalous dispersion profile.
Abstract: In the paper, a spirally filled solid core chalcogenide-based photonic crystal fibre is proposed, which is engineered to obtain a flattened broad anomalous dispersion profile. The spectrum spanning...
TL;DR: Optical interference microscopes are widely used in topography and roughness measurement on the micro and nanoscale as mentioned in this paper, however, despite their wide range of scientific and industrial applications, systematic d...
Abstract: Optical interference microscopes are widespread in topography and roughness measurement on the micro- and nanoscale. In spite of a wide range of scientific and industrial applications, systematic d...
TL;DR: In this article, the authors reported a reflective semiconductor optical amplifier (RSOA), in which the input light propagates and reflects back to the input port after amplifying twice through its active reg...
Abstract: In this paper, we reported a reflective semiconductor optical amplifier (RSOA), in which the input light propagates and reflects back to the input port after amplifying twice through its active reg...
TL;DR: In this paper, a novel structure photonic crystal fiber (PCF) supporting orbital angular momentum (OAM) modes is proposed, where the transmission layer is a ring core with high refractive index, sandwiched between the...
Abstract: A novel structure photonic crystal fibre (PCF) supporting orbital angular momentum (OAM) modes is proposed. The transmission layer is a ring core with high refractive index, sandwiched between the ...
TL;DR: In this paper, spontaneous photon bursts are observed in the output collected from a mesoscale semiconductor-based laser near the lasing threshold, and their appearance is compared to predictions obtained from Laser...
Abstract: Spontaneous photon bursts are observed in the output collected from a mesoscale semiconductor-based laser near the lasing threshold. Their appearance is compared to predictions obtained from Laser ...
TL;DR: Optical waveguide (OWG) sensors present great potential for detecting trace levels of harmful gases because of their high sensitivity and anti-electromagnetic interference as discussed by the authors. However, OWG-based SO2 a...
Abstract: Optical waveguide (OWG) sensors present great potential for detecting trace levels of harmful gases because of their high sensitivity and anti-electromagnetic interference. However, OWG-based SO2 a...
TL;DR: In this article, the interference pattern in a nonlinear Mach-Zehnder interferometer formed by two aperiodically-poled crystals, where broadband squeezed light is gene...
Abstract: We study both theoretically and experimentally the interference pattern in a nonlinear Mach–Zehnder interferometer formed by two aperiodically-poled crystals, where broadband squeezed light is gene...
TL;DR: In this paper, a single-layer graphene-based surface plasmon resonance (SLG-SPR) biosensor was developed to detect C-reactive protein (CRP) and Prostate-specific antigen (PSA).
Abstract: In this work, we have developed a kind of single-layer graphene-based surface plasmon resonance (SLG-SPR) biosensor to detect C-reactive protein (CRP) and Prostate-specific antigen (PSA). In the ex...
TL;DR: In this paper, the authors present a macroscopic approach to quantizing light inside a linear response dielectric material when both spectral dispersion and linear-response dielectrics are available.
Abstract: These notes – intended to be self-contained and tutorial – present a direct, macroscopic approach to quantizing light inside a linear-response dielectric material when both spectral dispersion and ...
TL;DR: In this article, a single molecule becomes visible at hot spots of plasmonic nanoparticles, and Fano resonances can control the nonlinear response in two ways, i.e., the signal from the single molecule can be seen and the signal can be suppressed.
Abstract: Nonlinear signal even from a single molecule becomes visible at hot spots of plasmonic nanoparticles. In these structures, Fano resonances can control the nonlinear response in two ways. (i...
TL;DR: Adaptive optics correction of the scintillation index of a Gaussian laser beam in underwater turbulence was studied in this article. But the adaptive optics correction, filter functions providing the pisto...
Abstract: Adaptive optics correction of the scintillation index of a Gaussian laser beam in underwater turbulence is studied. To introduce the adaptive optics correction, filter functions providing the pisto...
TL;DR: In this article, the authors demonstrate the implementation of a temperature sensor based on mechanically induced long-period fiber gratings (MILPFGs) using a 3D printing technology.
Abstract: We demonstrate the implementation of a temperature sensor based on mechanically induced long-period fibre gratings (MILPFGs) using a 3-D printing technology. Our sensor has an assembled structure w...
TL;DR: Optical temporal differentiators (DIFFs) based on on-chip all-pass microring resonators (APMRRs) are the fundamental all-optical signal processing blocks for differentiation of the complex envelope as mentioned in this paper.
Abstract: Optical temporal differentiators (DIFFs) based on on-chip all-pass microring resonators (APMRRs) are the fundamental all-optical signal processing blocks for differentiation of the complex envelope...
TL;DR: In this article, two variants of Born-series methods, for the first time, were presented, providing a numerical solution to the time-independent photo-acoustic wave equation.
Abstract: This work presents two variants of Born-series methods, for the first time, providing a numerical solution to the time-independent photoacoustic wave equation. These methods are effective in provid...
TL;DR: In this paper, a novel high-sensitivity temperature sensor based on UV glue-filled silica capillary tube (SCT) structure is proposed and demonstrated experimentally, and the proposed sensor can be easil...
Abstract: A novel high-sensitivity temperature sensor based on Ultraviolet (UV) glue-filled silica capillary tube (SCT) structure is proposed and demonstrated experimentally. The proposed sensor can be easil...
TL;DR: In this paper, the light scattering by a rough quartz surface covered with a calcium hypochlorite solution is considered, and it is shown that the optimal electric field can be formed over the quartz surface to prov
Abstract: The light scattering by a rough quartz surface covered with a calcium hypochlorite solution is considered. It is shown that the optimal electric field can be formed over the quartz surface to provi...
TL;DR: In this article, the authors elaborate analytical field expressions of diffracted Hermite-Cosh-Gaussian (HChG) beams through an Airy Transform Optical System (ATOS).
Abstract: In the present paper, we elaborate analytical field expressions of diffracted Hermite-Cosh-Gaussian (HChG) beams through an Airy Transform Optical System (ATOS). It is demonstrated that the resulti...
TL;DR: This work defined a performance measure based on the image reconstruction time and its resemblance to the original object, and determined that the use of image processing and recognition algorithms offers major improvements in temporal efficiency.
Abstract: Reducing the time necessary to acquire information is highly desirable in almost every context. Ghost imaging is no exception, which is very time consuming due to its scanning nature and low light ...
TL;DR: This work is studying the joint influence of atmospheric turbulence and time jitter effects on the average BER of an FSO link by presenting a new approach for various modulation schemes and obtaining new closed-form mathematical expressions for accurate estimation of the BER performance of the optical wireless communication systems.
Abstract: The research area of optical wireless communication links has attracted significant interest over the last years due to the significant advantages offered by this kind of technology. However, the p...
TL;DR: In this paper, the authors investigated the absorption characteristics of graphene cavity-based electromagnetic metamaterial structures by using the conductivity characteristic matrix method, and demonstrated that the proposed method can be used to analyze the absorption properties of the graphene cavity.
Abstract: We investigate THz absorption characteristics of graphene cavity-based electromagnetic metamaterial structures by using the conductivity characteristic matrix method. We demonstrate that the propos...