Jin‐Wei Shi
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View article: Construction of 4-D FMCW LiDAR images using narrow linewidth extended cavity DBR laser with highly linear wavelength sweeping
Construction of 4-D FMCW LiDAR images using narrow linewidth extended cavity DBR laser with highly linear wavelength sweeping Open
A FMCW LiDAR system of extended cavity distributed Bragg grating (DBR) lasers, on an InP generic foundry platform, is established with a narrow linewidth of ≈ 25 kHz. Meanwhile, utilizing the coupled phase modulator in the reverse-bias con…
View article: Ultrafast single-mode Zn-diffusion VCSELs at the 850 nm wavelength for energy-efficient linking via graded-index single-mode fiber transmission
Ultrafast single-mode Zn-diffusion VCSELs at the 850 nm wavelength for energy-efficient linking via graded-index single-mode fiber transmission Open
The pursuit of more energy-efficient optical linking at higher data rates is an ongoing goal to ensure rapid developments in AI technology. A breakdown of the total energy consumption in the modern 400 and 800 Gbit/s transceiver modules sh…
View article: Modulating Photogenerated Electron Transfer by Highly Conductive EDOT π-Bridge for Efficient Uranium Extraction from Water
Modulating Photogenerated Electron Transfer by Highly Conductive EDOT π-Bridge for Efficient Uranium Extraction from Water Open
View article: Photon-Number-Resolving Detection with Highly Efficient InGaAs/InAlAs Single-Photon Avalanche Diode
Photon-Number-Resolving Detection with Highly Efficient InGaAs/InAlAs Single-Photon Avalanche Diode Open
Photon-number-resolving detectors are in high demand for applications in photonic quantum technology. In this study, we demonstrate the photon-number-resolving capabilities of our self-developed, highly efficient InGaAs/InAlAs single-photo…
View article: Window size dependence of gain and bandwidth in avalanche photodiodes with multiple multiplication layers under near Geiger-mode operation
Window size dependence of gain and bandwidth in avalanche photodiodes with multiple multiplication layers under near Geiger-mode operation Open
We consider avalanche photodiodes (APDs) functioning under near Geiger-mode operation for extremely weak light (single or several photons) detection, such as in LiDAR receivers. To meet such demands, APDs which simultaneously have a large …
View article: Linearization of wavelength sweeping lasers for the construction of 4-D FMCW LiDAR images of slow-moving objects using baseband beat note signals
Linearization of wavelength sweeping lasers for the construction of 4-D FMCW LiDAR images of slow-moving objects using baseband beat note signals Open
A FMCW LiDAR system of both the distributed feedback laser and external cavity laser is established in baseband beat notes, rather than up-conversion to an intermediate frequency to exclude flicker noise. Meanwhile, utilizing fast-scanning…
View article: Enhanced Photon Number Resolving Detection with High-Efficient InGaAs/InAlAs Single Photon Avalanche Diode
Enhanced Photon Number Resolving Detection with High-Efficient InGaAs/InAlAs Single Photon Avalanche Diode Open
Photon number-resolving detectors are in high demand for applications in photonic quantum technology. In this study, we demonstrate the enhanced capabilities of our self-developed high-efficient InGaAs/InAlAs single-photon avalanche diode …
View article: Miniaturized Vertical‐Cavity Surface‐Emitting Laser Array with a Novel Electrode Design for High‐Speed, Low‐Noise, and High‐Brightness Performance
Miniaturized Vertical‐Cavity Surface‐Emitting Laser Array with a Novel Electrode Design for High‐Speed, Low‐Noise, and High‐Brightness Performance Open
The recent demand for optical wireless communication (OWC) channels for 6G and satellite communication has driven the development of high-brightness light sources for high-speed modulation. However, there are usually trade-offs among brigh…
View article: Nanophotonics Pioneer: Prof. Dr. Dieter Bimberg “Green Photonic Network: From VCSELs to Nanophotonics”
Nanophotonics Pioneer: Prof. Dr. Dieter Bimberg “Green Photonic Network: From VCSELs to Nanophotonics” Open
We would like to celebrate Prof [...]
View article: Simultaneous enhancement of the bandwidth and responsivity in high-speed avalanche photodiodes with an optimized flip-chip bonding package
Simultaneous enhancement of the bandwidth and responsivity in high-speed avalanche photodiodes with an optimized flip-chip bonding package Open
The enhancement in responsivity of photodiodes (PDs) or avalanche photodiodes (APDs) with the traditional flip-chip bonding package usually comes at the expense of degradation in the optical-to-electrical (O-E) bandwidth due to the increas…
View article: Miniaturized Vertical‐Cavity Surface‐Emitting Laser Array with a Novel Electrode Design for High‐Speed, Low‐Noise, and High‐Brightness Performance
Miniaturized Vertical‐Cavity Surface‐Emitting Laser Array with a Novel Electrode Design for High‐Speed, Low‐Noise, and High‐Brightness Performance Open
Herein, it is shown how the novel layout and arrangement of electrodes of a vertical‐cavity surface‐emitting laser (VCSEL) array can simultaneously improve its high‐speed data transmission performance and the brightness of the output beam.…
View article: Parity-time symmetry breaking optical nanocircuit
Parity-time symmetry breaking optical nanocircuit Open
Gain and loss balanced parity-time (PT) inversion symmetry has been achieved across multiple platforms including acoustics, electronics, and photonics. Tunable subwavelength asymmetric transmission based on PT symmetry breaking has attract…
View article: Table of Contents
Table of Contents Open
View article: Avalanche photodiodes with multiple multiplication layers for coherent detection
Avalanche photodiodes with multiple multiplication layers for coherent detection Open
View article: Separated electrodes for the enhancement of high-speed data transmission in vertical-cavity surface-emitting laser arrays
Separated electrodes for the enhancement of high-speed data transmission in vertical-cavity surface-emitting laser arrays Open
In this work, a novel design for the electrodes in a near quasi-single-mode (QSM) vertical-cavity surface-emitting laser (VCSEL) array with Zn-diffusion apertures inside is demonstrated to produce an effective improvement in the high-speed…
View article: Special Issue on Advanced Ultra-High Speed Optoelectronic Devices
Special Issue on Advanced Ultra-High Speed Optoelectronic Devices Open
The data communication market has recently experienced a boom [...]
View article: High-Brightness, High-Speed, and Low-Noise VCSEL Arrays for Optical Wireless Communication
High-Brightness, High-Speed, and Low-Noise VCSEL Arrays for Optical Wireless Communication Open
The development of high-speed and high-brightness vertical-cavity surface-emitting lasers (VCSELs), which can serve as an efficient light source for optical wireless communication (OWC), play a crucial role in growth of the next generation…
View article: In<sub>0.52</sub>Al<sub>0.48</sub>As Based Single Photon Avalanche Diodes With Stepped E-Field in Multiplication Layers and High Efficiency Beyond 60%
In<sub>0.52</sub>Al<sub>0.48</sub>As Based Single Photon Avalanche Diodes With Stepped E-Field in Multiplication Layers and High Efficiency Beyond 60% Open
We carry out an In 0.53 Ga 0.47 As/In 0.52 Al 0.48 As single photon avalanche diode which exhibits a single photon detection efficiency exceeding 60% at 1310 nm and neat temporal characteristic o…
View article: Avalanche Photodiodes with Dual Multiplication Layers for High-Speed and Wide Dynamic Range Performances
Avalanche Photodiodes with Dual Multiplication Layers for High-Speed and Wide Dynamic Range Performances Open
In this work, we demonstrate In0.52Al0.48As top/backside-illuminated avalanche photodiodes (APD) with dual multiplication layers for high-speed and wide dynamic range performances. Our fabricated top-illuminated APDs, with a partially depl…
View article: Novel failure mechanism of nanoscale mesa‐type avalanche photodiodes under harsh environmental stresses
Novel failure mechanism of nanoscale mesa‐type avalanche photodiodes under harsh environmental stresses Open
Avalanche photodiode (APD) is an indispensable receiver component because of its high bandwidth and low noise performance. Recently, APD reliability, under harsh environmental stresses such as high heat and humidity, has drawn great intere…
View article: High-Power and High-Responsivity Avalanche Photodiodes for Self-Heterodyne FMCW Lidar System Applications
High-Power and High-Responsivity Avalanche Photodiodes for Self-Heterodyne FMCW Lidar System Applications Open
In this work, we demonstrate the high-power and high-responsivity performance of the dual multiplication (M-) layers in In0.52Al0.48As based avalanche photodiode (APD). The dual M-layer design in our APD structure eff…
View article: Neat Temporal Performance of InGaAs/InAlAs Single Photon Avalanche Diode With Stepwise Electric Field in Multiplication Layers
Neat Temporal Performance of InGaAs/InAlAs Single Photon Avalanche Diode With Stepwise Electric Field in Multiplication Layers Open
We have incorporated a novel design of stepwise electric field in the multiplication layers to the InGaAs/InAlAs single photon avalanche diodes (SPADs). The stepwise electric field profile aims to circumvent the dilemma between dark count …
View article: Humidity Degradation Study of Mesa-type Avalanche Photodiodes under Harsh Environmental Stresses
Humidity Degradation Study of Mesa-type Avalanche Photodiodes under Harsh Environmental Stresses Open
Avalanche photodiode is a widely used receiver component due to its high sensitivity and low noise performance. For many applications, the APD chips are required to maintain stable performance against harsh environmental stresses such as h…
View article: High-brightness and high-speed vertical-cavity surface-emitting laser arrays
High-brightness and high-speed vertical-cavity surface-emitting laser arrays Open
High-power vertical-cavity surface-emitting laser (VCSEL) arrays, which can serve as the light source in modern lidar and three-dimensional optical sensing systems, have recently attracted a lot of attention. In these types of systems, the…
View article: Analysis of stability catastrophe of confocal cavity
Analysis of stability catastrophe of confocal cavity Open
Optical cavity is a fundamental device of modern optics and has a wide range of applications in the fields of laser generation, nonlinear optical conversion, and optical sensors. A major aspect of the properties of optical cavity is the st…
View article: Single-Mode 940 nm VCSELs With Narrow Divergence Angles and High-Power Performances for Fiber and Free-Space Optical Communications
Single-Mode 940 nm VCSELs With Narrow Divergence Angles and High-Power Performances for Fiber and Free-Space Optical Communications Open
Using the Zn-diffusion and oxide-relief techniques with the optimized aperture sizes, we demonstrate a novel single-mode 940 nm vertical-cavity surface-emitting laser (VCSEL) with high brightness performance. The highly single-mode (SM) ou…
View article: Three-Port Optical Phase-Shifters and Modulators With Ultra-High Modulation Efficiency, Positive RF-Linking Gain, and Low Residual Amplitude Modulation
Three-Port Optical Phase-Shifters and Modulators With Ultra-High Modulation Efficiency, Positive RF-Linking Gain, and Low Residual Amplitude Modulation Open
A three-port optical phase-shifter and Mach-Zehnder modulator (MZM) based on PNP-type bipolar junction transistor (BJT) is demonstrated. Significant plasma (injected carrier) induced changes of the refractive index for the optical waveguid…
View article: Enhancement in speed and responsivity of uni-traveling carrier photodiodes with GaAs<sub>05</sub>Sb<sub>05</sub>/In<sub>053</sub>Ga<sub>047</sub>As type-II hybrid absorbers
Enhancement in speed and responsivity of uni-traveling carrier photodiodes with GaAs<sub>05</sub>Sb<sub>05</sub>/In<sub>053</sub>Ga<sub>047</sub>As type-II hybrid absorbers Open
We demonstrate a top-illuminated high-speed uni-traveling carrier photodiode (UTC-PD) with a novel design in the p-type absorber, which can effectively shorten the photon absorption depth at telecommunication wavelengths (1.31~1.55 μm) and…
View article: Photonic technologies for autonomous cars: feature introduction
Photonic technologies for autonomous cars: feature introduction Open
Photonic technologies that support the low cost manufacturing needed for automotive sensors have experienced explosive developments in recent years. To date most commercially available lidar system have been direct detection time-of-flight…
View article: Superfast Photonic and Electronic Device Group
Superfast Photonic and Electronic Device Group Open