Dmitry A. Korobko
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View article: A Review of Multiparameter Fiber-Optic Distributed Sensing Techniques for Simultaneous Measurement of Temperature, Strain, and Environmental Effects
A Review of Multiparameter Fiber-Optic Distributed Sensing Techniques for Simultaneous Measurement of Temperature, Strain, and Environmental Effects Open
This review summarizes recent progress and emerging trends in multiparameter optical fiber sensing, emphasizing techniques that enable the simultaneous measurement of temperature, strain, acoustic waves, pressure, and other environmental q…
View article: Er/Yb-doped fiber laser with a repetition rate of ultrashort pulses of 484 MHz
Er/Yb-doped fiber laser with a repetition rate of ultrashort pulses of 484 MHz Open
In this study, we present a demonstration of a short ring cavity passively mode-locked composite Er/Yb-doped fiber laser with a saturable absorber, which is based on aerosol-synthesized single-walled carbon nanotubes. We have achieved stab…
View article: Registration of Sounds Emitted by the Madagascar Hissing Cockroach Using a Distributed Acoustic Sensor
Registration of Sounds Emitted by the Madagascar Hissing Cockroach Using a Distributed Acoustic Sensor Open
Recent advancements have expanded the applications of fiber-optic distributed acoustic sensors (DAS), including their use in monitoring the acoustic activity of insects, which can be either harmful or beneficial to agriculture. Previous st…
View article: Harmonic Mode-Locking in All-PM Er-Doped Fiber Laser NALM Configuration
Harmonic Mode-Locking in All-PM Er-Doped Fiber Laser NALM Configuration Open
We present, to the best of our knowledge, the first demonstration of a sub-GHz harmonically mode-locked (HML) Er-doped fiber laser based on a nonlinear amplified loop mirror (NALM). This fully spliced, polarization-maintaining (PM) fiber c…
View article: Harmonic Mode-Locking in All-Pm Er-Doped Fiber Laser Nalm Configuration
Harmonic Mode-Locking in All-Pm Er-Doped Fiber Laser Nalm Configuration Open
View article: JUSTIFICATION OF THE CHOICE OF THE SCHEMATIC DIAGRAM OF SUBLIMATION MICROWAVE DRYING OF FOOD PRODUCTS
JUSTIFICATION OF THE CHOICE OF THE SCHEMATIC DIAGRAM OF SUBLIMATION MICROWAVE DRYING OF FOOD PRODUCTS Open
This work is devoted to the research and substantiation of the technology and scheme of the equipment for drying vegetables, potatoes and fruits. At the same time, it is necessary that the products after such drying retain high quality (bi…
View article: Comparison of the Sensitivity of Various Fibers in Distributed Acoustic Sensing
Comparison of the Sensitivity of Various Fibers in Distributed Acoustic Sensing Open
Standard single-mode telecommunication optical fiber is still one of the most popular in distributed acoustic sensing. Understanding the acoustic, mechanical and optical features of various fibers available currently can lead to a better o…
View article: Newest Methods and Approaches to Enhance the Performance of Optical Frequency-Domain Reflectometers
Newest Methods and Approaches to Enhance the Performance of Optical Frequency-Domain Reflectometers Open
In this review, we summarize the latest advances in the design of optical frequency-domain reflectometers (OFDRs), digital signal processing, and sensors based on special optical fibers. We discuss state-of-the-art approaches to improving …
View article: Flat-topped optical spectrum as a specific marker of multi-pulse grouping in soliton fiber laser
Flat-topped optical spectrum as a specific marker of multi-pulse grouping in soliton fiber laser Open
We report the experimental observation of a stable generation regime in a soliton fiber laser, characterized by a distinct flat-topped optical spectrum. Notably, in multi-pulse generation, this specific spectrum shape prevents the harmonic…
View article: Experimental and numerical study of different mode-locking techniques in holmium fiber laser with a ring cavity
Experimental and numerical study of different mode-locking techniques in holmium fiber laser with a ring cavity Open
Experimental and numerical study has been performed for three techniques of mode-locking in all-fiber Holmium laser. We have compared the fundamental repetition rate pulsed generation for mode-locking based on: nonlinear polarization evolu…
View article: Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling
Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling Open
Passive harmonic mode-locking of a soliton fiber laser locked to optoacoustic resonance (OAR) in the cavity fiber ensures high-frequency laser operation, high pulse stability, and low timing jitter. However, the pulse repetition rate (PRR)…
View article: Sub-100-Hz DFB Laser Injection-Locked to PM Fiber Ring Cavity
Sub-100-Hz DFB Laser Injection-Locked to PM Fiber Ring Cavity Open
Low-noise lasers are invaluable tools in applications ranging from precision spectroscopy and displacement measurements to the development of advanced optical atomic clocks. Although all these applications benefit from reduced frequency no…
View article: Enhancing High-Order Harmonic Mode-Locking in Er/Yb-Doped Fiber Lasers with Sub-Mhz Fundamental Frequency Via Optoacoustic Resonance
Enhancing High-Order Harmonic Mode-Locking in Er/Yb-Doped Fiber Lasers with Sub-Mhz Fundamental Frequency Via Optoacoustic Resonance Open
View article: Fine Structure of High-Energy Pulses from a Stimulated Brillouin Scattering-Assisted Q-Switch Tm-Doped Fiber Laser
Fine Structure of High-Energy Pulses from a Stimulated Brillouin Scattering-Assisted Q-Switch Tm-Doped Fiber Laser Open
We have demonstrated a simple all-fiber thulium (Tm) laser Q-switched by stimulated Brillouin scattering (SBS). The maximum output pulse energy was 80 μJ. This allowed us to generate a broadband spectrum directly at the laser outputs. For …
View article: Numerical Optimization Technique of Multilayer SERS Substrates
Numerical Optimization Technique of Multilayer SERS Substrates Open
A numerical optimization technique of a three-dimensional (3D) SERS substrate with finite element analysis is proposed. Using the optical reciprocity theorem, we have shown that instead of the well-known local field enhancement criterion, …
View article: NARROW-BAND FIBER LASERS FOR APPLICATIONS IN MICROWAVE PHOTONIOCS
NARROW-BAND FIBER LASERS FOR APPLICATIONS IN MICROWAVE PHOTONIOCS Open
We review original configurations of single- and dual- wavelength narrow-band fiber lasers attractive for applications in microwave photonics.
View article: Activation Function Dynamic Averaging as a Technique for Nonlinear 2D Data Denoising in Distributed Acoustic Sensors
Activation Function Dynamic Averaging as a Technique for Nonlinear 2D Data Denoising in Distributed Acoustic Sensors Open
This work studies the application of low-cost noise reduction algorithms for the data processing of distributed acoustic sensors (DAS). It presents an improvement of the previously described methodology using the activation function of neu…
View article: Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling
Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling Open
High repetition rates of ultrafast fiber lasers are crucial for their various applications, such as optical fiber telecommunications, microwave photonics, frequency metrology, and the high-speed optical processing. Passive harmonic mode-lo…
View article: Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling
Double harmonic mode-locking in soliton fiber ring laser acquired through the resonant optoacoustic coupling Open
High repetition rates of ultrafast fiber lasers are crucial for their various applications, such as optical fiber telecommunications, microwave photonics, frequency metrology, and the high-speed optical processing. Passive harmonic mode-lo…
View article: Frequency Comb Fiber Generator Based on Photonic Bandgap Amplifier
Frequency Comb Fiber Generator Based on Photonic Bandgap Amplifier Open
We report on a model of a fiber frequency comb generator that develops an approach to harmonically mode-locked fiber laser design based on dissipative four-wave mixing. In our version of this approach, we assume an amplifying one-dimension…
View article: Enhancing the Distributed Acoustic Sensors’ (DAS) Performance by the Simple Noise Reduction Algorithms Sequential Application
Enhancing the Distributed Acoustic Sensors’ (DAS) Performance by the Simple Noise Reduction Algorithms Sequential Application Open
Moving differential and dynamic window moving averaging are simple and well-known signal processing algorithms. However, the most common methods of obtaining sufficient signal-to-noise ratios in distributed acoustic sensing use expensive a…
View article: Polarization maintaining harmonically mode-locked fiber laser with suppressed supermode noise due to continuous wave injection
Polarization maintaining harmonically mode-locked fiber laser with suppressed supermode noise due to continuous wave injection Open
We report on experimental studies of a SESAM mode-locked Er-doped fiber laser completely spliced from polarization-maintaining fiber components. With the fiber mode spot properly aligned to the SESAM, the laser operates harmonic mode-locki…
View article: Brillouin Interaction between Two Optical Modes Selectively Excited in Weakly Guiding Multimode Optical Fibers
Brillouin Interaction between Two Optical Modes Selectively Excited in Weakly Guiding Multimode Optical Fibers Open
A multimode optical fiber supports excitation and propagation of a pure single optical mode, i.e., the field pattern that satisfies the boundary conditions and does not change along the fiber. When two counterpropagating pure optical modes…
View article: Broadband Supercontinuum Generation in Dispersion Decreasing Fibers in the Spectral Range 900–2400 nm
Broadband Supercontinuum Generation in Dispersion Decreasing Fibers in the Spectral Range 900–2400 nm Open
The spectrally flat supercontinuum generation in the wavelength range of 900–2400 nm is demonstrated in silica-based fibers of variable core diameter and dispersion. It is shown that, in comparison with standard optical fibers of the same …
View article: Resonantly induced mitigation of supermode noise in a harmonically mode-locked fiber laser: revealing the underlying mechanisms
Resonantly induced mitigation of supermode noise in a harmonically mode-locked fiber laser: revealing the underlying mechanisms Open
We have performed experimental and numerical studies enabling clear insight into the physical mechanisms underlying the super-mode noise mitigation in harmonically mode-locked (HML) fiber lasers using the resonant continuous wave (CW) inje…
View article: Scientific Applications of Distributed Acoustic Sensing: State-of-the-Art Review and Perspective
Scientific Applications of Distributed Acoustic Sensing: State-of-the-Art Review and Perspective Open
This work presents a detailed review of the development of distributed acoustic sensors (DAS) and their newest scientific applications. It covers most areas of human activities, such as the engineering, material, and humanitarian sciences,…
View article: Birth and Annihilation of Solitons in Harmonically Mode-Locked Fiber Laser Cavity Through Continuous Wave Injection
Birth and Annihilation of Solitons in Harmonically Mode-Locked Fiber Laser Cavity Through Continuous Wave Injection Open
View article: Generation, amplification and compression of wave packets with a large depth of phase modulation: the formation of giant optical pulses such as stray waves or rogue waves
Generation, amplification and compression of wave packets with a large depth of phase modulation: the formation of giant optical pulses such as stray waves or rogue waves Open
View article: Generation of Subpicosecond Pulse Trains in Fiber Cascades Comprising a Cylindrical Waveguide with Propagating Refractive Index Wave
Generation of Subpicosecond Pulse Trains in Fiber Cascades Comprising a Cylindrical Waveguide with Propagating Refractive Index Wave Open
A cylindrical waveguide structure with the running refractive index wave has been recently demonstrated as a means for the generation of high-repetition-rate pulse trains. The operation mechanism involves a proper combination of the freque…
View article: Brillouin-like amplification in rare-earth-doped optical fibers
Brillouin-like amplification in rare-earth-doped optical fibers Open
We present a theoretical formalism to describe the amplification of two monochromatic waves counter-propagating in a rare-earth-doped optical fiber amplifier. Interaction of the waves through a dynamical population inversion grating inscri…