Results 51 to 60 of about 798,880 (216)

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

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

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

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

Investigation and Implementation of Dicode Pulse Position Modulation Over Indoor Visible Light Communication System [PDF]

A visible light communication (VLC) system with green technology is available and enables users to use white LEDs for illumination as well as for high data rate transmission over wireless optical links.
Buhafa, Adel Mohamed
core   +3 more sources

Investigation of Characteristics of Ultraviolet Light Pulse Weak Signal Communication System Based on Fourth-Order Frequency-Shift Keying Modulation

Photonics
In ultraviolet (UV) communication, On–Off Keying (OOK) is the primary modulation technique. Compared to OOK, frequency modulation offers stronger resistance to path attenuation.
Yingkai Zhao, Axin Du, Yu Jiao, Li Kuang, Jiawen Chen, Ning Sun, Jianguo Liu   +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

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

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

Performance Analysis of OOK-NRZ and OOK-RZ digital Modulation Techniques for Free Space Optical Communication System [PDF]

, 2017
The performance of modulation techniques is frequently compared in terms of the average received optical power required to achieve a desired bit error rate at a given data rate.
, Er. Manjit Singh Bhullar, Er. Harpreet Kaur, Er. Harisharan Aggarwal
core   +1 more source