Frontiers of Optoelectronics
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Heuristic polling sequence to enhance sleep count of EPON
Frontiers of Optoelectronics - Tập 12 - Trang 422-432 - 2019
Next-generation passive optical networks (PONs) demand power conservation to
create a green environment. A reduction in power consumption of the traditional
Ethernet passive optical network (EPON) can be achieved by increasing the sleep
count in optical network units (ONUs). In this paper, this is accomplished by
introducing a first-in-last-out (FILO) polling sequence in the place of a fixed
polli...
A simple unilateral homogenous PhOLEDs with enhanced efficiency and reduced efficiency roll-off
Frontiers of Optoelectronics - Tập 6 - Trang 435-439 - 2013
In this paper, highly efficient phosphorescent organic lighting emitting diodes
(PhOELDs) with low efficiency roll-off are demonstrated by using a unilateral
homogenous device structure with wide band-gap material 4, 4′,
4″-tri(N-carbazolyl)-triphenylamine (TCTA) as hole transporting layer and
emitting layer (EML). The optimized blue device exhibits a high power efficiency
of 40 lm/W, external qua...
Medium chromatic dispersion calculation and correction in spectral-domain optical coherence tomography
Frontiers of Optoelectronics - Tập 10 - Trang 323-328 - 2017
A method for determining and correcting distortions in spectral-domain optical
coherence tomography images caused by medium dispersion was developed. The
method is based on analysis of the phase distribution of the interference signal
recorded by an optical coherence tomography device using an iterative approach
to find and compensate for the effect of a medium’s chromatic dispersion on
point-spre...
All-solid anti-resonant single crystal fibers
Frontiers of Optoelectronics - Tập 15 - Trang 1-9 - 2022
In this paper, a novel all-solid anti-resonant single crystal fiber (AR-SCF)
with high refractive index tubes cladding is proposed. By producing the cladding
tubes with high refractive index material, the AR guiding mechanism can be
realized for the SCF, which can reduce the mode number to achieve single-mode or
few-mode transmission. The influences of different materials and structures on
the con...
2D materials as a new platform for photonic applications
Frontiers of Optoelectronics - Tập 13 - Trang 89-90 - 2020
Enabling technologies and challenges for transmission of 400 Gb/s signals in 50 GHz channel grid
Frontiers of Optoelectronics - Tập 6 - Trang 30-45 - 2012
This paper reviewed the recent progress in transmission of 400 Gb/s,
wavelength-division-multiplexed (WDM) channels for optical networks based on the
standard 50 GHz grid. We discussed the enabling modulation, coding, and line
system technologies, as well as the existing challenges. It is shown that, 400
Gb/s per channel signal can be transmitted on the standard 50 GHz ITU-T grid at
8.4 b/ds/Hz ne...
Widely tunable and high resolution mid-infrared laser based on BaGa4Se7 optical parametric oscillator
Frontiers of Optoelectronics - Tập 16 - Trang 1-7 - 2023
The widely tunable and high resolution mid-infrared laser based on a BaGa4Se7
(BGSe) optical parametric oscillator (OPO) was demonstrated. A wavelength tuning
range of 2.76–4.64 μm and a wavelength tuning resolution of about 0.3 nm were
obtained by a BGSe (56.3°, 0°) OPO, which was pumped by a 1064 nm laser. It is
the narrowest reported wavelength tuning resolution for BGSe OPO, and was
obtained b...
Integrated contra-directionally coupled chirped Bragg grating waveguide with a linear group delay spectrum
Frontiers of Optoelectronics - Tập 16 - Trang 1-9 - 2023
Due to the advantages of low propagation loss, wide operation bandwidth,
continuous delay tuning, fast tuning speed, and compact footprints, chirped
Bragg grating waveguide has great application potential in wideband phased array
beamforming systems. However, the disadvantage of large group delay error
hinders their practical applications. The nonlinear group delay spectrum is one
of the main fact...
A special issue on Optoelectronics for Energy
Frontiers of Optoelectronics - Tập 11 - Trang 315-316 - 2019
Silicon waveguide cantilever displacement sensor for potential application for on-chip high speed AFM
Frontiers of Optoelectronics - Tập 11 - Trang 53-59 - 2018
This paper reviews an initial achievement of our group toward the development of
on-chip parallel high-speed atomic force microscopy (HS-AFM). A novel AFM
approach based on silicon waveguide cantilever displacement sensor is proposed.
The displacement sensing approach uniquely allows the use of nano-scale wide
cantilever that has a high resonance frequency and low spring constant desired
for on-ch...
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