Integrated structured light manipulation
Jian Wang,
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Kang Li,
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Zhiqiang Quan
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et al.
Photonics Insights,
Journal Year:
2024,
Volume and Issue:
3(3), P. R05 - R05
Published: Jan. 1, 2024
Language: Английский
Optical mode manipulation using deep spatial diffractive neural networks
Optics Express,
Journal Year:
2024,
Volume and Issue:
32(9), P. 16212 - 16212
Published: Feb. 29, 2024
In
this
paper,
we
investigate
the
theoretical
models
and
potential
applications
of
spatial
diffractive
neural
network
(SDNN)
structures,
with
a
particular
focus
on
mode
manipulation.
Our
research
introduces
novel
transmission
simulation
method
that
employs
matrix
multiplication,
alongside
parameter
optimization
algorithm
based
gradient
descent.
This
approach
facilitates
comprehensive
understanding
light
field
manipulation
capabilities
inherent
to
SDNNs.
We
extend
our
investigation
for
SDNNs
various
scales.
achieve
demultiplexing
5,
11
100
orthogonal
orbital
angular
momentum
(OAM)
modes
using
networks
4,
10
50
layers,
respectively.
Notably,
optimized
OAM
demultiplexer
shows
an
average
loss
0.52
dB,
maximum
0.62
crosstalk
-28.24
dB.
Further
exploring
SDNNs,
optimize
10-layer
structure
conversion
applications.
enables
conversions
from
Hermite-Gaussian
(HG)
Laguerre-Gaussian
(LG)
modes,
as
well
HG
showing
versatility
in
propose
innovative
assembly
glass
substrate
integrated
photonic
devices.
A
network,
size
49
mm
×
7
mm,
effectively
demultiplexes
minimal
crosstalk.
Similarly,
20-layer
67
serves
highly
efficient
25-channel
converter,
advanced
optical
communications.
Language: Английский
Multidimensional Fiber‐to‐Chip Optical Processing Using Photonic Integrated Circuits
Laser & Photonics Review,
Journal Year:
2024,
Volume and Issue:
18(9)
Published: May 3, 2024
Abstract
Multidimensional
multiplexing
technologies
have
been
proven
to
be
a
promising
scheme
meet
the
demands
of
high‐capacity
optical
interconnects
and
processing
networks.
However,
challenges
remain
realize
multidimensional
hybrid
data
transmission
signal
between
few‐mode
fiber
links
on‐chip
networks,
since
coupling
chip
is
almost
exclusively
in
single‐mode
regime.
Here,
fiber‐to‐chip
system
proposed
demonstrated
for
wavelength‐,
mode‐,
polarization‐division
signals,
where
link
multi‐mode
network
realized
by
using
3D
photonic
integrated
(de)multiplexers
on
glass
as
well
2D
silicon
chip,
composed
parallel
cascaded
micro‐ring
resonator
array
performs
function
reconfigurable
add/drop
multiplexer.
By
operating
wavelength‐division
conjunction
with
mode‐division
multiplexing,
communication
bandwidth
systems
can
further
scaled.
Language: Английский
Azimuthal Modulation Instability, Breathers, and Solitons in Ring-Core Optical Fibers
ACS Photonics,
Journal Year:
2024,
Volume and Issue:
11(8), P. 3140 - 3149
Published: July 17, 2024
Manipulating
and
processing
orbital
angular
momentum
of
light
with
optical
fibers
still
remains
a
very
challenging
complex
task.
We
investigate
the
existence
transverse
(i.e.,
multidimensional)
nonlinear
waves
as
new
route
for
all-optical
conversion
amplification
states.
In
particular,
we
numerically
azimuthal
modulation
instability
in
an
fiber
supporting
modes
only,
i.e.,
vortex
fiber,
by
means
scalar
multimode
unidirectional
pulse
propagation
equation.
demonstrate
that
linear
stage
this
taking
place
such
ring-core
anomalous
rotation
group-velocity
dispersion,
provides
possibilities
terms
modes.
Moreover,
reveal
full
dynamics
can
be
simply
described
analytical
breather
solutions
corresponding
Schrödinger
Azimuthal
soliton
compression
are
also
unveiled,
well
specific
spatial
rotating
features
function
topological
charge
involved.
Language: Английский