A simultaneous emission-detection phenomenon occurs when a quantum well (QW) diode is biased with forward voltage and illuminated shorter-wavelength light beam. The able to detect modulate emitted by itself due its spectral overlap. Here, two identical QW units separately function as transmitter receiver establish wireless communication system. In association energy diagram theory, we explain the irreversibility between emission excitation in diode, which may help us deeply understand...

Due to the overlapping emission and detection spectra of quantum well (QW) diodes, they inherently possess dual functions light detection. In this paper, we integrate a 4 × array QW diodes combine it with programmable circuit convolutional neural network algorithm, ultimately proposing simultaneous display-communication system. This system not only displays visual content but also receives external signals via wireless communication classifies recognizes signal an accuracy exceeding 95%. The...

Quantum well (QW) diodes have the capability to function as a light-emitting diode or photodiode and inherently feature partial emission-detection spectral overlap. Therefore, QW can sense light emission from another sharing same active region. In association with distributed Bragg reflection (DBR) technique, we here present wavelength-division multiplexing (WDM) visible communication (VLC) over single channel by using vertical assembly of red, green, blue (RGB) diodes. The identical...

Integrating optoelectronic devices with various functions into a monolithic chip is popular research frontier. The top-down integration scheme on silicon-based III-nitride wafers has unique advantages. A on-chip system lighting source, electrical absorption modulator, waveguide and photodetector the same structure were designed fabricated to discover asymmetry of photon emission in quantum well diode. characteristics characterized detail three different spectral redshifts observed...

Abstract Wireless technologies can be used to track and observe freely moving animals. InGaN/GaN light-emitting diodes (LEDs) allow for underwater optical wireless communication due the small water attenuation in blue-green spectrum region. GaN-based quantum well also harvest detect light. Here, we report a monolithic GaN optoelectronic system (MGOS) that integrates an energy harvester, LED SiO 2 /TiO distributed Bragg reflector (DBR) into single chip. The DBR serves as waterproof layer...

Relatively weak tumor affinities and short retention time in vivo hinder the application of targeting peptides molecular imaging. Multivalent strategies based on various scaffolds have been utilized to improve ability peptide-receptor binding or extend clearance peptide-based probes. Here, we use a tetrameric far-red fluorescent protein (tfRFP) as scaffold create self-assembled octavalent peptide nanoprobe (Octa-FNP) using genetic engineering approach. The multiligand connecting, fluorophore...

Involuntary patient movement results in data discontinuities during computed tomography (CT) scans which lead to a serious degradation the image quality. In this paper, we specifically address artifacts induced by motion head scan.Instead of trying solve an inverse problem, developed simulation algorithm synthesize images with motion-induced artifacts. The rotation, translation, oscillation and any possible combination are considered. Taking advantage powerful learning ability neural...

High-speed fluorescence molecular tomography (FMT) reconstruction for 3-D heterogeneous media is still one of the most challenging problems in diffusive optical imaging. In this paper, we propose a fast FMT method that based on Monte Carlo (MC) simulation and accelerated by cluster graphics processing units (GPUs). Based Message Passing Interface standard, modified MC code reconstruction, different Green's functions representing flux distribution are calculated simultaneously GPUs cluster. A...

The combination of plastic optical fiber (POF) with monolithically integrated transmitter and receiver is becoming increasingly attractive for the development miniature optoelectronic sensing systems. Here, we propose a temperature system by integrating GaN chip POF aluminum (Al) reflector. Owing to overlap between electroluminescence responsivity spectra multiple quantum well (MQW) diodes, both having identical MQW structures are on tiny using same fabrication process flow. Environmental...

Lightweight, low-cost, and simple systems for magnetic field sensing are in high demand. Here, we demonstrate such a system by integrating light source, detector, fluid (MF), plastic optical fiber (POF). Two bifunctional AlGaInP diodes with identical multiple-quantum well structures separately function as the source detector of due to partial overlap between electroluminescence responsivity spectra. Magnetic is realized changing amount reflected change reflection coefficient POF/MF interface...

Multiple-quantum-well (MQW) diodes have a variety of light emission, transmission, modulation, and detection functions. In particular, they feature an emission-detection spectral overlap region, allowing them to be used as both transmitters receivers at the same time. Here, we vertically assemble red, green, blue MQW create wavelength-division multiplexing (WDM) by using distributed bragg reflector (DBR) technique. A single-link communication system, in which longer-wavelength photons can...

Multiple-quantum well (MQW) diodes can be used as bifunctional due to the emission-detection spectral overlap. When integrated with magnetic fluids (MFs) that have tunable refractive index, they designed micro field sensors. The sapphire substrate of MQW diode chip consists an transmitter and receiver is directly exposed MF, external strength change index at boundary between thus modulating reflected light realizing sensing. Verified by experimental measurements, micromagnetic sensor has a...

A fluorescence molecular tomography system for in vivo tumor imaging is developed using a 748-nm continuous wave diode laser as an excitation source.A high sensitivity cooled charge-coupled device (CCD) camera with and emission filters utilized to obtain the images.The beam performs fast raster scanning dual-axis galvanometric scanner.The accuracy of spot position at source window within ±200 µm.Based on phantom experimental results, spatial resolution less than 1.7 mm, relative quantitation...

Purpose: A combined system of fluorescence molecular tomography and microcomputed (FMT&mCT) can provide anatomical information small animals in a single study with intrinsically coregistered images. The provided by the mCT subsystem is commonly used as reference to locate fluorophore distribution or priori structural improve performance FMT. Therefore, transformation between coordinate systems needs be determined advanced. Methods: cocalibration method for FMT&mCT proposed. First,...

Portable applications of fluorescence detection systems have gained much attention in various fields and require system components to be small compact. In this work, we report on a compact demonstrate its application for sensing imaging. The light source filter are integrated single chip the proposed system, which not only realizes separation between excitation fluorescent lights but also improves light-emitting diode (LED) extraction efficiency. Furthermore, allows removable sample unit....

In a III-nitride multiple quantum well (MQW) diode biased with forward voltage, electrons recombine holes inside the MQW region to emit light; meanwhile, utilizes photoelectric effect sense light when higher-energy photons hit device displace in diode. Both injected and liberated are gathered diode, thereby giving rise simultaneous emission-detection phenomenon. The 4 × diodes could translate optical signals into electrical ones for image construction wavelength range from 320 440 nm. This...

A wavelength calibration method is proposed to improve Fiber Bragg Grating (FBG) Wavelength detection precision. The reflected spectra of two reference FBG elements and a sensing element are scanned by narrow band light from fiber F-P tunable filter (FFP-TF) driven triangular waveform voltage. Sequence numbers peak position identified with full spectrum analysis. Two fixed used monitor the transmission construct relationship between driving voltage, voltage scaled as linear interpolation...

Owing to emission-detection spectral overlap, a quantum well (QW) diode can detect shorter-wavelength photons emitted from another sharing the same QW active region. Therefore, wireless light communication system be established by using identical diodes that function separately as transmitters and receivers. Here, we investigate irreversibility between emission detection of present time-division multiplexing (TDM) visible (VLC) network five blue are defined software or receivers achieve...

Due to the overlap between electroluminescence spectrum and spectral responsivity curve, gallium nitride (GaN)-based multi-quantum well (MQW) diodes can modulate detect light emitted by another diode with same MQW structure. This enables realization of a monolithic integrated GaN optoelectronic circuit, integrating an MQW-based transmitter, waveguide, modulator, receiver on tiny chip. It is known that active region absorbs high-energy photons within plane, generating electron-hole pairs...

Multi-quantum well (MQW) diodes exhibit simultaneous emission and detection, allowing them to serve as multifunctional devices, including light emitters, receivers, energy transmitters, information transmitters. Leveraging this capability, we designed a Multifunctional Energy Transfer Information System (METIS) that integrates contactless control, harvesting, transfer. At the core of system, communication chip operates effectively across broad range extreme temperatures in various solution...