Diffractive optics for OAM-mode division multiplexing in optical fibers

2017 ◽  
Author(s):  
G. Ruffato ◽  
M. Massari ◽  
E. Gazzola ◽  
G. Parisi ◽  
F. Romanato
Keyword(s):  
Optical Fibers ◽  
Diffractive Optics ◽  
Mode Division Multiplexing

Mode Conversion Models Based on Spatial Spectral Matching for Mode Division Multiplexing in Optical Fibers

2014 ◽  
Vol 596 ◽  
pp. 807-810 ◽  
Author(s):  
Ming Ying Lan ◽  
Song Nie ◽  
Li Gao ◽  
Shan Yong Cai ◽  
Chen Xing Ma ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Communication Systems ◽  
Mode Conversion ◽  
Optical Fiber Communication ◽  
Spatial Filter ◽  
Light Modulator ◽  
Spectral Matching ◽  
Fourier Plane ◽  
Fiber Communication ◽  
Mode Division Multiplexing

In this paper, a mode conversion model is proposed to increase the capacity of optical fiber communication systems. In this model, a spatial spectral matching method is used to convert the original mode to the desired mode for mode division multiplexing in optical fibers. A binary phase spatial light modulator is employed on the Fourier plane as a spatial filter. Numerical results show that the original modes can be converted to the desired modes.

scholarly journals Effects of Mode Dispersion on Cross-phase modulation on Mode Division Multiplexed Optical Fibers

2021 ◽  
Author(s):  
Reinhardt Rading
Keyword(s):  
Optical Fibers ◽  
Phase Modulation ◽  
Single Mode ◽  
Cross Phase Modulation ◽  
Space Division Multiplexing ◽  
Space Division ◽  
Mode Division Multiplexing ◽  
Mode Dispersion ◽  
Linear Effects

<div>The concept of mode division multiplexing also known as space division multiplexing was introduced as an alternative to combat the approaching capacity crunch in single mode fibers. Just like single mode fibers, space division multiplexed fibers will experience non-linearity at a different level and studies have shown that some linear effects can be beneficial in combating the nonlinear interference. This study aims to identify the benefits accrued when these linear effects are implemented by exploring the already existing models defined in the literature.</div>

scholarly journals Effects of Mode Dispersion on Cross-phase modulation on Mode Division Multiplexed Optical Fibers

2021 ◽  
Author(s):  
Reinhardt Rading
Keyword(s):  
Optical Fibers ◽  
Phase Modulation ◽  
Single Mode ◽  
Cross Phase Modulation ◽  
Space Division Multiplexing ◽  
Space Division ◽  
Mode Division Multiplexing ◽  
Mode Dispersion ◽  
Linear Effects

<div>The concept of mode division multiplexing also known as space division multiplexing was introduced as an alternative to combat the approaching capacity crunch in single mode fibers. Just like single mode fibers, space division multiplexed fibers will experience non-linearity at a different level and studies have shown that some linear effects can be beneficial in combating the nonlinear interference. This study aims to identify the benefits accrued when these linear effects are implemented by exploring the already existing models defined in the literature.</div>

scholarly journals Enhanced spin orbit interaction of light in highly confining optical fibers for mode division multiplexing

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
P. Gregg ◽  
P. Kristensen ◽  
A. Rubano ◽  
S. Golowich ◽  
L. Marrucci ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Optical Fibers ◽  
High Performance ◽  
Orbit Interaction ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Network Nodes ◽  
Mode Division Multiplexing ◽  
Telecommunications Network ◽  
Long Fibers

Abstract Light carries both orbital angular momentum (OAM) and spin angular momentum (SAM), related to wavefront rotation and polarization, respectively. These are usually approximately independent quantities, but they become coupled by light’s spin-orbit interaction (SOI) in certain exotic geometries and at the nanoscale. Here we reveal a manifestation of strong SOI in fibers engineered at the micro-scale and supporting the only known example of propagating light modes with non-integer mean OAM. This enables propagation of a record number (24) of states in a single optical fiber with low cross-talk (purity > 93%), even as tens-of-meters long fibers are bent, twisted or otherwise handled, as fibers are practically deployed. In addition to enabling the investigation of novel SOI effects, these light states represent the first ensemble with which mode count can be potentially arbitrarily scaled to satisfy the exponentially growing demands of high-performance data centers and supercomputers, or telecommunications network nodes.

scholarly journals Transmission Matrix Measurement of Multimode Optical Fibers by Mode-Selective Excitation Using One Spatial Light Modulator

2019 ◽  
Vol 9 (1) ◽  
pp. 195 ◽  
Author(s):  
Stefan Rothe ◽  
Hannes Radner ◽  
Nektarios Koukourakis ◽  
Jürgen W. Czarske
Keyword(s):  
Optical Fibers ◽  
Spatial Light Modulator ◽  
Selective Excitation ◽  
Transmission Matrix ◽  
Light Modulator ◽  
Fiber Networks ◽  
Multimode Fibers ◽  
Rapid Decomposition ◽  
Mode Division Multiplexing ◽  
Optical Fiber Networks

Multimode fibers (MMF) are promising candidates to increase the data rate while reducing the space required for optical fiber networks. However, their use is hampered by mode mixing and other effects, leading to speckled output patterns. This can be overcome by measuring the transmission matrix (TM) of a multimode fiber. In this contribution, a mode-selective excitation of complex amplitudes is performed with only one phase-only spatial light modulator. The light field propagating through the fiber is measured holographically and is analyzed by a rapid decomposition method. This technique requires a small amount of measurements N, which corresponds to the degree of freedom of the fiber. The TM determines the amplitude and phase relationships of the modes, which allows us to understand the mode scrambling processes in the MMF and can be used for mode division multiplexing.

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