Photonics Research,
Journal Year:
2024,
Volume and Issue:
12(3), P. 465 - 465
Published: Jan. 3, 2024
Distributed
acoustic
sensing
(DAS)
technology
has
been
a
promising
tool
in
various
applications.
Currently,
the
large
size
and
relatively
high
cost
of
DAS
equipment
composed
discrete
devices
restrict
its
further
popularization
to
some
degree,
photonic
integration
offers
potential
solution.
In
this
paper,
we
demonstrate
an
integrated
interrogator
for
on
silicon-on-insulator
(SOI)
platform.
The
design
chip
revolves
around
Mach–Zehnder
modulator
(MZM)
transmitter
dual-quadrature
dual-polarization
coherent
receiver.
supports
multiple
schemes,
including
time-gated
digital
optical
frequency
domain
reflectometry
(TGD-OFDR),
which
is
adopted
system
performance
evaluation.
59
pε/
Hz
strain
resolution
12.1
km
fiber
with
1.14
m
spatial
(SR)
realized.
Besides,
along
49.0
fiber,
81
3.78
SR
achieved.
results
show
that
comparable
system.
To
best
our
knowledge,
first
dedicated
on-chip
interrogator,
validates
effectiveness
blend
photonics
technology.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
Miniaturized
computational
spectrometers
have
emerged
as
a
promising
strategy
for
miniaturized
spectrometers,
which
breaks
the
compromise
between
footprint
and
performance
in
traditional
by
introducing
resources.
They
attracted
widespread
attention
variety
of
materials,
optical
structures,
photodetectors
are
adopted
to
fabricate
with
cooperation
reconstruction
algorithms.
Here,
comprehensive
review
focusing
on
two
crucial
components:
spectral
encoding
algorithms
provided.
Principles,
features,
recent
progress
strategies
summarized
detail,
including
space‐modulated,
time‐modulated,
light‐source
encoding.
The
classified
into
deep
learning
algorithms,
they
carefully
analyzed
based
mathematical
models
required
reconstruction.
Drawing
from
analysis
components,
cooperations
them
considered,
figures
merits
highlighted,
optimization
improving
their
outlined,
considerations
operating
these
systems
application
achieve
hyperspectral
imaging
is
also
discussed.
Finally,
insights
potential
future
applications
developments
Science Advances,
Journal Year:
2024,
Volume and Issue:
10(49)
Published: Dec. 6, 2024
Conventional
spectrometer
designs
necessitate
a
compromise
between
their
resolution
and
sensitivity,
especially
as
device
detector
dimensions
are
scaled
down.
Here,
we
report
on
miniaturizable
platform
where
light
throughput
onto
the
is
instead
enhanced
increased.
This
planar,
CMOS-compatible
based
around
metasurface
encoders
designed
to
exhibit
photonic
bound
states
in
continuum,
operational
range
can
be
altered
or
extended
simply
through
adjusting
geometric
parameters.
system
enhance
photon
collection
efficiency
by
up
two
orders
of
magnitude
versus
conventional
designs;
demonstrate
this
sensitivity
advantage
ultralow-intensity
fluorescent
astrophotonic
spectroscopy.
work
represents
step
forward
for
practical
utility
spectrometers,
affording
route
integrated,
chip-based
devices
that
maintain
high
SNR
without
requiring
prohibitively
long
integration
times.
Acquiring
real-time
spectral
information
in
point-of-care
diagnosis,
internet-of-thing,
and
other
lab-on-chip
applications
require
spectrometers
with
hetero-integration
capability
miniaturized
feature.
Compared
to
conventional
semiconductors
integrated
by
heteroepitaxy,
solution-processable
provide
a
much-flexible
integration
platform
due
their
solution-processability,
and,
therefore,
more
suitable
for
the
multi-material
system.
However,
are
usually
incompatible
micro-fabrication
processes.
This
work
proposes
facile
universal
fabricate
semiconductor
substitutability
unprecedently
involving
conjugated
mode
of
bound
states
continuum
(conjugated-BIC)
photonics.
Specifically,
exploiting
conjugated-BIC
photonics,
which
remains
unexplored
lasing
studies,
renders
broadband
photodiodes
ultra-narrowband
detection
ability,
wavelength
tunability,
on-chip
ability
while
ensuring
device
performance.
Spectrometers
based
on
these
photodiode
arrays
exhibit
high
resolution
wide/tunable
bandwidth.
The
fabrication
processes
compatible
like
perovskites
quantum
dots,
can
be
potentially
extended
semiconductors.
Signals
from
directly
constitute
incident
spectra
without
being
computation-intensive,
latency-sensitive,
error-intolerant.
As
an
example,
perovskite
capable
realizing
narrowband/broadband
light
reconstruction
in-situ
hyperspectral
imaging.
Photonics Research,
Journal Year:
2024,
Volume and Issue:
12(3), P. 465 - 465
Published: Jan. 3, 2024
Distributed
acoustic
sensing
(DAS)
technology
has
been
a
promising
tool
in
various
applications.
Currently,
the
large
size
and
relatively
high
cost
of
DAS
equipment
composed
discrete
devices
restrict
its
further
popularization
to
some
degree,
photonic
integration
offers
potential
solution.
In
this
paper,
we
demonstrate
an
integrated
interrogator
for
on
silicon-on-insulator
(SOI)
platform.
The
design
chip
revolves
around
Mach–Zehnder
modulator
(MZM)
transmitter
dual-quadrature
dual-polarization
coherent
receiver.
supports
multiple
schemes,
including
time-gated
digital
optical
frequency
domain
reflectometry
(TGD-OFDR),
which
is
adopted
system
performance
evaluation.
59
pε/
Hz
strain
resolution
12.1
km
fiber
with
1.14
m
spatial
(SR)
realized.
Besides,
along
49.0
fiber,
81
3.78
SR
achieved.
results
show
that
comparable
system.
To
best
our
knowledge,
first
dedicated
on-chip
interrogator,
validates
effectiveness
blend
photonics
technology.
