A5055760613- Optical Wireless Communication Technologies
- Underwater Vehicles and Communication Systems
- Semiconductor Lasers and Optical Devices
- Advanced Optical Sensing Technologies
- Image Enhancement Techniques
- Photonic and Optical Devices
- Semiconductor Quantum Structures and Devices
- Metamaterials and Metasurfaces Applications
- Acoustic Wave Resonator Technologies
- CCD and CMOS Imaging Sensors
- GaN-based semiconductor devices and materials
- Neural Networks and Reservoir Computing
- Mechanical and Optical Resonators
- ECG Monitoring and Analysis
- Energy Harvesting in Wireless Networks
- Analytical Chemistry and Sensors
- EEG and Brain-Computer Interfaces
- Gas Sensing Nanomaterials and Sensors
- Perovskite Materials and Applications
- Non-Invasive Vital Sign Monitoring
- Semiconductor materials and devices
- Advanced Fiber Optic Sensors
- Water Quality Monitoring Technologies
Nanjing University of Posts and Telecommunications
2020-2024
Underwater wireless optical communication (UWOC) has been widely considered a supplement to traditional underwater acoustic communication. A real-time UWOC video delivery system was developed in laboratory water tank based on field-programmable gate array (FPGA) with binary frequency shift keying (2FSK) modulation. The achieved full-duplex by using the transmission control protocol (TCP) and forward error correction (FEC). high-power 445 nm light-emitting diode (LED) adopted enhance...
Underwater wireless optical communication (UWOC) is a promising technology that can be candidate to improve the capacity and speed in aquatic media. The aim of this study examine performance silicon photomultiplier (SiPM) array-based multiple-input multiple-output (MIMO) UWOC system. A SiPM modern solid-state photodetector with extremely high sensitivity up single-photon level or photon-counting ability, which helps detecting weak light signals after long-distance underwater channel...
Owing to its relatively low absorption loss and high data transmission rate, wireless blue light communication is becoming an increasingly attractive technology for underwater applications. Here, we demonstrate optical (UOWC) system that communicates using light-emitting diodes (LEDs) with a dominant wavelength of 455 nm. Under the on-off keying modulation scheme, waterproof UOWC achieves bidirectional rate 4 Mbps based on control protocol (TCP) exhibits real-time full-duplex video distance...
In this Letter, the CH 3 NH PbBr nanocrystals (NCs) are embedded into interstices of fluorine (polyvinyl fluoride/polyvinylidene fluoride, PVF/PVDF) matrix on polyethylene terephthalate (PET) substrate to introduce new advantages, such as being flexible and waterproof, while maintaining high optical performance perovskites. The sample’s photoluminescence (PL) spectra under 325 nm laser is a green emission peaked at 537 with full width half maximum (FWHM) about 21.2 fast PL decay time. As...
Abstract Micro multiple quantum well (MQW) III‐nitride diodes usually function as micro light‐emitting diodes, which are considered the next generation of display technology. In addition to both illumination and display, MQW in theory have capability detect modulate light. Here, proof that diode can simultaneously emit light is experimentally confirmed by a wireless communication system using two identical devices. The 20 × monolithically integrated into single chip real‐time imaging...
Multiple-quantum well (MQW) III-nitride diodes can both emit and detect light. In particular, a diode absorb shorter-wavelength photons generated from another that shares an identical MQW structure because of the spectral overlap between emission detection spectra diode, which establishes wireless visible light communication system using two diodes. Moreover, modulating retro-reflector (MRR) enables asymmetric optical links, forms two-way link single transmitter receiver. Here, in...
Multifunctioning InGaN/GaN multi‐quantum well (MQW) diodes can transmit and detect light separately. In particular, MQW have spectral overlap between electroluminescence (EL) responsivity, conferring the unique ability to emitted by another device sharing an identical structure. Herein, a III‐nitride transmitter receiver on single chip are monolithically integrated, which establish asymmetric optical link significantly reduce material processing costs. By attaching skin with emitting toward...
Underwater wireless optical communication (UWOC) is a promising means of realizing large capacity and high rate in aquatic media. In this paper, photomultiplier tube (PMT)-based multiple-input multiple-output (MIMO) UWOC system investigated. Photon counting an effective technique used to detect very low-level light. A PMT with excellent photon-counting mode adopted, the performance terms bit error discussed. The received power can be predicted based on detected photocount each symbol period,...
This Letter reports a collinear optical interconnect architecture for acoustic sensing via monolithic integrated GaN optoelectronic chip. The chip is designed with ring-shaped photodiode (PD) surrounding light-emitting diode (LED) of spectral range from 420-530 nm. axisymmetric structure helps the coaxial propagation light transmission and reception. By placing this multiple-quantum wells (MQW)-based device piece aluminum-coated polyethylene terephthalate (Al/PET) film on fiber ends, an...
With recent advancements in deep ultraviolet (DUV) light-emitting diodes (LEDs) and solar-blind photodetectors, wireless DUV light communication is emerging as a novel technique, which can extend transmission ranges avoid solar interference. Herein, full-duplex, real-time system using 275 nm LEDs proposed. We adopted high-power designed high-speed transmitter, high-sensitivity receiver, main processing unit for the system. Furthermore, system, Reed-Solomon (RS) encoder an on-off keying (OOK)...
Integrated Sensing and Communication (ISAC) involves incorporating wireless sensing capabilities into communication systems. The integration of ISAC affords improvements in the performance system, as well ability to perform high-precision motion detection, positioning, imaging, other related functions. Therefore, it is highly valuable develop an terminal device that has a high degree energy efficiency. Here, we propose chip utilizes coexistence luminescence detection properties III-nitride...
Due to the electro-optic property of InGaN multiple quantum wells, a III-nitride diode can provide light transmission, photo detection, and energy harvesting under different bias conditions. Made diodes arrayed in single chip, combination allows transmit, detect, harvest visible at same time. Here, we monolithically integrate transmitter, receiver, harvester using compatible foundry process. By adopting bottom <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline">...
In this paper, we characterize the quasi-analog detection performance of silicon photomultiplier (SiPM) photodetector for optical wireless communications (OWC) at low photon flux signal intensity. addition to analyzing specificities conventional anode-cathode standard output, it also highlights unique capacitively coupled fast output feature SiPM devices introduced by SensL, now ON Semiconductor. Furthermore, potential advantages are analyzed, and first propose combined model outputs....
<title>Abstract</title> A quantum well (QW) diode that is capable of emitting light also absorbing light. In particular, the QW has broad electroluminescence and responsivity spectra thus, a distinct spectral overlap exists, enabling establishment communication using two identical diodes, namely, one as transmitter other receiver. Here, we demonstrate time-division multiplexing (TDM) wireless green diodes are defined by software or receiver to achieve real-time underwater data transmission...
Integrated transceivers with electro-optic modulation characteristics are valuable for free-space optical communications and sensing. We propose an AlInGaAs multiple quantum well (MQW) transceiver over a broad spectral range. Two identical MQW diodes on single wafer used to transmit receive signals provide obvious broad-spectrum light. The photocurrent ratio reaches 13.9 11.3 white light 1550 nm infrared light, respectively, varying bias voltages. can identify environmental changes forward...
With the advent of Internet things (IoT) era, existing communication methods have been difficult to meet high-speed needs and various complex scenarios. Especially in occasions with large electromagnetic interference, such as tunnels, oceans inspection wells, is people's needs. Therefore, a new method, optical has advantages strong anti-interference ability, high speed confidentiality. It gradually entered vision. And development third generation semiconductors also achieved great...