Results 41 to 50 of about 1,149,379 (214)

Security‐Enhanced Differential Binary‐Phase‐Shift‐Keying Quantum Key Distribution With a Wavelength‐Switchable Single‐Photon Carrier

Advanced Photonics Research, Volume 7, Issue 6, June 2026.
A single‐chip dual‐wavelength coherent photon source is proposed to add parametric uncertainty and improve the security of single‐photon differential binary‐phase‐shift‐keying quantum key distribution. This wavelength‐uncertain coding or decoying operation enables flexible and secure D‐BPSK‐QKD transmission over a wavelength‐division‐multiplexed ...
Sze‐En Lai, Chih‐Hsien Cheng, Atsushi Matsumoto, Kouichi Akahane, Gong‐Ru Lin   +4 more
wiley   +1 more source

Spatial‐Wavelength Multiplexing Error‐Controlled Photonic Analog Computing System

Advanced Science, Volume 13, Issue 28, 18 May 2026.
A novel photonic integrated circuit prototype implementing the concept of general‐purpose analog computing and demonstrate its capability in radio frequency applications. The chip features a multichannel architecture and performs fully optical analog computation with frequency‐domain parallel processing. An FPGA‐based error‐correction algorithm aims to
Tao Zhu, Bowen Zhu, Shicheng Zhang, Keren Li, Xianchen Wu, Yazhi Pi, Jie Yan, Daigao Chen, Bingli Guo, Xi Xiao, Lei Wang, Xiaochuan Xu, Xuwei Xue, Shanguo Huang, Zizheng Cao, Shaohua Yu   +15 more
wiley   +1 more source

Rayleigh Backscattering Noise Alleviation in Long-Reach Ring-Based WDM Access Communication

IEEE Access, 2020
In the paper, we propose and design a ring-topology wavelength-division-multiplexing (WDM) access network for long-reach signal transmission. Here, the new central office (CO) and optical network unit (ONU) modules are designed to construct the ring ...
Chien-Hung Yeh, Jhao-Ren Chen, Wei-Yao You, Wen-Piao Lin, Chi-Wai Chow   +4 more
doaj   +1 more source

Highly Versatile Real‐Time Optical Noise Filtering Through Temporal Cloaking

Laser &Photonics Reviews, Volume 20, Issue 10, 22 May 2026.
Conventional bandpass filtering strategies may be insufficient for recovering optical waveforms under extremely noisy conditions. We demonstrate a temporal‐cloaking denoising strategy enabled by the temporal Talbot effect, which concentrates the coherent signal of interest into short temporal slots while broadband noise remains temporally spread.
Majid Goodarzi, Manuel P. Fernandez, Geunweon Lim, Connor Rowe, Xinyi Zhu, José Azaña   +5 more
wiley   +1 more source

Upstream WDM-PON transmission scheme based on PDM-OOK modulation and digital coherent detection with dual-modulus algorithm.

Optics Express, 2015
Wavelength-division-multiplexing passive optical network (WDM-PON) is a promising architecture for next-generation access networks because of its large bandwidth, protocol transparency and scalability.
Paikun Zhu, Juhao Li, Peng Zhou, Bangjiang Lin, Zhangyuan Chen, Yongqi He   +5 more
semanticscholar   +1 more source

An Optical Camera Communication Using Novel Hybrid Frequency Shift and Pulse Width Modulation Technique for Li-Fi

Computation, 2022
With an increase in network-connected devices, the existing Radio Frequency (RF) spectrum is getting highly saturated. Non-RF-based communication systems have recently garnered attention as they can be considered an alternative to RF-based systems for ...
Sanket Salvi, Geetha Vasantha
doaj   +1 more source

Effects of Sodium Reduction on the Physicochemical Characteristics of Pretzel Bites

Journal of Food Science, Volume 91, Issue 5, May 2026.
ABSTRACT Excessive sodium intake is a global health concern that is largely driven by processed foods. This study evaluated the effects of sodium chloride (NaCl) reduction on the physicochemical properties of pretzel bites. Samples were formulated with five NaCl levels (T1 [0% reduction], T2 [15.91% reduction], T3 [29.28% reduction], T4 [40.53 ...
Reichell P. Cruz Cabrera, Pablo Torres Aguilar, Oguz Kaan Ozturk, Naiman Khan, Florin Dolcos, Damir D. Torrico   +5 more
wiley   +1 more source

32-Gb/s OOK and 64-Gb/s PAM-4 Modulation Using a Single-Drive Silicon Mach–Zehnder Modulator with 2 V Drive Voltage

IEEE Photonics Journal, 2019
We demonstrate a high-efficiency silicon Mach-Zehnder modulator with U-shaped PN junctions. The depletion region of the U-shaped PN junction has a large overlap with the waveguide optical mode, leading to a low drive voltage.
Gangqiang Zhou, Linjie Zhou, Yuyao Guo, Shuhuang Chen, Liangjun Lu, Lei Liu, Jianping Chen   +6 more
doaj   +1 more source

A Power-Domain MST Scheme With BPPM in NLOS Ultraviolet Communications

IEEE Photonics Journal, 2023
Due to the high path loss of non-line-of-sight (NLOS) ultraviolet communications (UVC) channel, pulse modulation schemes, such as on-off keying (OOK) and M-ary pulse-position modulation (PPM), and photon-counting receivers are commonly adopted.
Tian Cao, Tianfeng Wu, Changyong Pan, Jian Song   +3 more
doaj   +1 more source

Resonant Tunneling Diode‐Integrated Terahertz Transceiver Module for Wireless Communications

Advanced Photonics Research, Volume 7, Issue 4, April 2026.
Resonant tunneling diode‐enabled terahertz transceiver module. Terahertz bands are essential for next‐generation wireless communications, offering ultrabroad bandwidth and unprecedented data throughput. However, realizing compact, low‐cost, broadband, and efficient terahertz transceiver modules remains challenging.
Weijie Gao, Nguyen H. Ngo, Daiki Ichikawa, Mingxiang Li, Yuta Inose, Yuki Morita, Hidemasa Yamane, Yoshiharu Yamada, Shuichi Murakami, Yosuke Nishida, Tadao Nagatsuma, Withawat Withayachumnankul, Masayuki Fujita   +12 more
wiley   +1 more source