(PDF) Experimental characterization of the speckle
Using a conventional semiconductor laser and a multimode optical fiber we study experimentally how the speckle pattern depends on the laser pump
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Speckle Pattern Multimode Fiber
Speckle-Based Strain Sensing in Multimode Fiber
Here we give the details of the algorithm developed to extract quantitative strain information from the recorded speckle pattern scattered out of a multimode fiber.
Anti-perturbation multimode fiber speckle imaging and recognition
For multimode fibers subjected to intense perturbations, as one cannot expect to learn all morphological parameters, the existence of invariant fiber characteristics that survive intense
Deep learning and superoscillatory speckles empowered multimode
This work introduces an in-situ nano-displacement measurement system via a multimode fiber probe with superoscillatory speckles and deep learning.
Information distribution on regions of speckle patterns for imaging of
Multimode fibers (MMF) have been extensively investigated for transmitting images. The transmitting images are distorted into speckle patterns by MMFs, which can be reconstructed by
Deformation sensing with a multimode POF using speckle correlation
Summary A deformation sensing technique with a multimode plastic optical fibre based on intensity speckle patterns'' correlation coefficient measurement has been presented. Influence of the average
Seng Fatt LIEW | Postdoctoral Associate | Yale University, CT | YU
A general-purpose all-fiber spectrometer is demonstrated to overcome the trade-off between spectral resolution and bandwidth. By integrating a wavelength division multiplexer with five multimode
Lensless multi-core-fiber-based imaging from speckle autocorrelation
Flexible fiber-optic lensless endoscopic imaging plays a significant role in medical and biological applications. Lensless imaging based on far-field speckle of multi-core fibers under
Single-Fiber Embedded Acetabular Trail for Pressure Sensing Based
However, current clinical practices depend on surgeons'' subjective evaluations, lacking objective metrics for biomechanical assessment. Here, a single-fiber embedded acetabular trail is introduced for
Robust real-time imaging through flexible multimode fibers
Furthermore, speckle patterns change as the fiber undergoes bending, making the use of MMFs in flexible imaging applications even more complicated.
Interference of speckle patterns projected by multimode fibers
In this paper, the interference speckle patterns generated by multimode optical fibers are described. In our experience two types of interference are present, random interference between
Generation of multiwavelength cylindrical vector beams from a random
Besides, a novel multiwavelength multimode random fiber laser is also realized. The proposed and demonstrated fiber lasers have potential applications in speckle-free images, optical
Speckle Analysis in Multimode Optical Fibers for Chemical and
We examine how these algorithms perform when analyzing speckle patterns from a polymer optical fiber exposed to variations in both refractive index and pressure.
Dynamic speckle generation tuned by thermo-optic effects
We characterized the temporal fluctuations of dynamic speckles in a dedicated optical fiber-based setup, in transmission, where we placed the thermo-optic colloidal suspension between
Noise-tolerant wavefront shaping for focusing light through multimode
Schematic representation of speckle formation and wavefront shap-ing through a multimode fiber using digital optical phase conjugation is shown. (a) A random input wavefront produces a speckle
Fast and high-resolution multimode fiber speckle imaging via optical
We propose and demonstrate a silicon photonic integrated circuit (PIC) for exciting different spatial modes launched into a multimode-fiber (MMF) speckle imaging system.
Speckle Analysis in Multimode Optical Fibers for Chemical and
This article presents a comparative study on the performance of three widely used speckle demodulation algorithms, average intensity algorithm (AIA), normalized inner product coefficient
Inverse phase retrieval enabled plug-and-play multimode fiber
The total intensity of speckle patterns reflected from the distal end of fibers peaks when optimal coupling alignment is achieved. In our system, a microscope objective focuses the incident beam into a
(PDF) Measured and Predicted Speckle Correlation from
We present a technique that utilizes cascaded resonant cylindrical piezoelectric ceramics and multimode optical fibers wound around them to
Multimode optical fiber based spectrometers
The fiber-based spectrometer consists of a multimode fiber and a monochrome CCD camera that images the speckle pattern at the end of the fiber. The speckle pattern, created by interference
Speckle classification of a multimode fiber based on Inception V3
Based on the speckle pattern of a HERLEV dataset cell image transmitted by a multimode fiber, this paper studies the recognition accuracy of various types of speckle by a support vector
Speckle characterization in multimode fibers for sensing applications
This paper proposes the characterization of speckle patterns of multimode fibers in view of sensing applications and particularly for detection of vibration or seismic activity.
High-fidelity and high-speed wavefront shaping by
By incorporating the dimensionality limitation through l1 regularization, our approach demonstrates consistently higher-fidelity projections across different