Focusing Images through Large-Core Multimode Fibers and a Multimode Fiber Endoscope

2020 ◽  
Author(s):  
Paloma E. S. Pellegrini ◽  
Paulo F. Jarschel ◽  
Julian L. Pita ◽  
Roberto R. Panepucci ◽  
Lucas H. Gabrielli
Keyword(s):  
Multimode Fiber ◽  
Large Core ◽  
Multimode Fibers

scholarly journals Large core multimode fiber with high bandwidth and high connector tolerance for broadband short distance communications

APL Photonics ◽  
2021 ◽  
Vol 6 (7) ◽  
pp. 070802
Author(s):  
Kangmei Li ◽  
Xin Chen ◽  
Aramais R. Zakharian ◽  
Jason E. Hurley ◽  
Jeffery S. Stone ◽  
...  
Keyword(s):  
Short Distance ◽  
Multimode Fiber ◽  
Large Core ◽  
High Bandwidth

Results of experimental studies of multimode fiber Bragg gratings on multimode fibers

2016 ◽  
Vol 14 (1) ◽  
pp. 19-33 ◽  
Author(s):  
A.V. Bourdine ◽  
◽  
A.A. Vasilets ◽  
V.A. Burdin ◽  
O.G. Morozov ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Multimode Fiber ◽  
Multimode Fibers

Direct VCSEL launch into large-core multimode fiber: enhancement of the bandwidth x distance product

1997 ◽  
Author(s):  
Barbara A. DeBaun ◽  
Petar K. Pepeljugoski ◽  
Jeannine M. Trewhella
Keyword(s):  
Multimode Fiber ◽  
Large Core

scholarly journals Relative humidity FOS design using spherical hydrogel on no-core multimode fiber

2020 ◽  
Vol 8 (5) ◽  
pp. 65-71 ◽  
Author(s):  
A. Nasiri ◽  
S. Makouei ◽  
T. Y. Rezaii
Keyword(s):  
Refractive Index ◽  
Relative Humidity ◽  
Optical Fiber ◽  
Linear Response ◽  
Evanescent Waves ◽  
Multimode Fiber ◽  
Multimode Fibers ◽  
Sensor Structure ◽  
Intensity Changes ◽  
Core Fiber

In this paper, the design and simulation of a new optical fiber-based relative humidity (RH) sensor formed by spherical hydrogel droplets over the no-core fiber is stablished. The introduced sensor is capable of detecting humidity changes based on Evanescent waves and splice losses. Refractive index of PEGDMA hydrogel sphere changes with variation of humidity which can cause intensity changes in fiber. The sensor structure includes a no-core fiber in the length of 4 mm connected to two multimode fibers which performs sensing by three hydrogel spheres with diameter of 1 mm. The sensor operation wavelength is adjusted at 631nm. The results show that the designed structure has linear response for humidity in the range of 20 to 95%RH. In the meantime, the obtained sensitivity is about 0.13643 mW /% RH. The simulated sensor has some useful advantages in addition to having some associated with the two primary sensors including the simplicity of the structure and the sensor's function which can be explained by reduction of the length of sensing portion and increase in the sensitivity and range of humidity detection.

Bend and twist insensitive large core multimode fiber (LCMMF) for baseband and ROF in-home data transmission

2013 ◽  
Vol 294 ◽  
pp. 78-82
Author(s):  
C.W. Chow ◽  
C.H. Yeh ◽  
L.G. Yang ◽  
J.Y. Sung ◽  
S.P. Huang ◽  
...  
Keyword(s):  
Data Transmission ◽  
Multimode Fiber ◽  
Large Core

scholarly journals Active wavefront shaping for controlling and improving multimode fiber sensor

2019 ◽  
Vol 12 (04) ◽  
pp. 1942007 ◽  
Author(s):  
Tianting Zhong ◽  
Zhipeng Yu ◽  
Huanhao Li ◽  
Zihao Li ◽  
Haohong Li ◽  
...  
Keyword(s):  
Light Intensity ◽  
Light Propagation ◽  
Twist Angle ◽  
Measurement Range ◽  
Multimode Fiber ◽  
Multimode Fibers ◽  
Light Pattern ◽  
Speckle Patterns ◽  
Wavefront Shaping ◽  
Control Light

Wavefront shaping (WFS) techniques have been used as a powerful tool to control light propagation in complex media, including multimode fibers. In this paper, we propose a new application of WFS for multimode fiber-based sensors. The use of a single multimode fiber alone, without any special fabrication, as a sensor based on the light intensity variations is not an easy task. The twist effect on multimode fiber is used as an example herein. Experimental results show that light intensity through the multimode fiber shows no direct relationship with the twist angle, but the correlation coefficient (CC) of speckle patterns does. Moreover, if WFS is applied to transform the spatially seemingly random light pattern at the exit of the multimode fiber into an optical focus. The focal pattern correlation and intensity both can serve to gauge the twist angle, with doubled measurement range and allowance of using a fast point detector to provide the feedback. With further development, WFS may find potentials to facilitate the development of multimode fiber-based sensors in a variety of scenarios.

scholarly journals Solving the mystery of the walk-off soliton

2021 ◽  
Author(s):  
Mario Zitelli ◽  
Fabio Mangini ◽  
Mario Ferraro ◽  
Oleg Sidelnikov ◽  
Stefan Wabnitz
Keyword(s):  
Input Pulse ◽  
Ultrashort Pulses ◽  
Single Mode ◽  
High Energy ◽  
Multimode Fiber ◽  
Variational Theory ◽  
Multimode Fibers ◽  
Graded Index ◽  
Optical Modes ◽  
Energy Laser

Abstract Pioneering works on multimode fiber transmission [1,2], dated 40 years ago, predicted the existence of multimode solitons, providing conditions for the temporal trapping of the input optical modes to form a spatiotemporal soliton [3-5]. Only recently [6-8], multimode solitons were experimentally investigated in graded-index multimode fibers (GRIN), unveiling the complexity of a new, uncharted field. In our work, we experimentally and numerically investigated the propagation of ultrashort pulses over long distances of GRIN fiber. We discovered a new class of spatiotemporal solitons with surprising properties: basically single-mode, they cannot be described by the variational theory; their pulsewidth and energy are independent of the input pulse duration, and appear to depend only on the fiber dispersive parameters and, therefore, the wavelength. The new solitons are promising for the delivery of high-energy laser beams, for high-power spatiotemporal mode-locked multimode fiber lasers, and for high-bit rate multimode fiber networks.

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