Results 71 to 80 of about 4,023,657 (313)

GaN-based distributed feedback laser diodes for optical communications [PDF]

, 2019
Over the past 20 years, research into Gallium Nitride (GaN) has evolved from LED lighting to Laser Diodes (LDs), with applications ranging from quantum to medical and into communications.
Mike Leszczynski, Najda, Stephen P., Edik Rafailov, Giovanni Giuliano, Stephen P. Najda, Grzanka, Szymon, Watson, Scott, Viola, Shaun, Szymon Stanczyk, Anthony E. Kelly, Thomas J. Slight, Piotr Perlin, Yadav, Amit, Gwyn, Steffan, Giuliano, Giovanni, Docherty, Kevin E., Amit Yadav, Kelly, Anthony E., Leszczynski, Mike, Rafailov, Edik, Steffan Gwyn, Szymon Grzanka, Slight, Thomas J., Kevin E. Docherty, Perlin, Piotr, Stanczyk, Szymon, Scott Watson, Shaun Viola   +27 more
core   +1 more source

Quantum Noise Secured Terahertz Communications

, 2023
The quantum noise based terahertz signal encryption scheme is proposed, a 16 Gbits(-1) secure terahertz communication system at 300 GHz with the optical communication realms is demonstrated, taking a significant step toward high-security wireless ...
Zhang, Hongqi,, Yu, Xiongbin,, Bobrovs, Vjaceslavs,, Yang, Zuomin,, Wu, Yixin,, Pang, Xiaodan,, Deng, Qiuzhuo,, Popov, Sergei,, Zhang, Lu,, Yu, Xianbin,, Ozolins, Oskars,   +10 more
core   +1 more source

Optical communication techniques; A prospect of optical communications.

The Journal of the Institute of Television Engineers of Japan, 1988
1年にわたってオムニバス方式で連載してきた講座『光通信技術』の最終回として, 「光通信の将来」と題し, 光通信方式, デバイス等に関する課題のうちから, いくつかを取り上げて将来を展望する.
Okoshi, Takanori, Hirose, Akira
openaire   +3 more sources

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

OPTICAL COMMUNICATIONS AND NETWORKS

, 2021
In 2021, as optical technologies continue to demonstrate their advantages in telecom and data-center networks, we are also witnessing the attractive and promising progress on free-space optical communications and new technologies for fiber optic ...
Alouini, Mohamed-Slim, Zhu, Zuqing
core   +1 more source

Resonance-enhanced all-optical modulation of WSe2-based micro-resonator

Nanophotonics, 2019
Two-dimensional material tungsten diselenide (WSe2) nanosheets are coated on a microfibre knot resonator (MKR) to achieve an all-optical power modulation functionality.
Zhang Zijian, Chen Guowei, Yang Mingyu, Ou Yunyao, Luo Luqi, Lu Dongqin, Zhang Enze, Guan Heyuan, Lu Huihui, Zhu Wenguo, Yu Jianhui, Dong Jiangli, Qiu Wentao, Chen Zhe, Peng Gangding   +14 more
doaj   +1 more source

Aerosol Jet Printing of Benzocyclobutene as a Thermally Stable, Low‐Loss Dielectric for Multilayer Microwave Electronics

Advanced Materials Technologies, EarlyView.
Multilayer aerosol jet printed components with a low‐loss, thermally stable dielectric are demonstrated using benzocyclobutene. Ink formulation and in‐line droplet evaporation control support high‐quality, versatile, and stable printing performance. A specialized measurement for low‐loss materials reveals promising microwave properties, which, combined
Md Ramjan Ali, Trent Moritz, Mohammad Tayeb Al Qaseer, Ethan B. Secor   +3 more
wiley   +1 more source

Recent developments in indoor optical wireless systems [PDF]

, 2008
An overview of the developments in optical wireless systems viewed from the traditional communications viewpoint of transmitter, channel and receiver is presented.
Leeson, Mark S., Higgins, Matthew D., Green, Roger, Joshi, Harita, H. Joshi, M.S. Leeson, R.J. Green, M.D. Higgins   +7 more
core   +1 more source

Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication

Advanced Materials Technologies, EarlyView.
The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting, Yuh‐Chyi Chang, Yi‐Chan Hung, Cheng‐Yuan Hsiao, Chao‐Kai Wen, Tsung‐Hsien Lin   +5 more
wiley   +1 more source

Enhanced Photon-Pair Generation Based on Thin-Film Lithium Niobate Doubly Resonant Photonic Crystal Cavity

Photonics
In this work, a doubly resonant photonic crystal (PhC) cavity is proposed to enhance second harmonic generation (SHG) efficiency and photon pair generation rate (PGR). Through the exploration of geometry parameters, a band-edge mode within the light cone
Jinmian Zhu, Fengli Liu, Fangheng Fu, Yuming Wei, Tiefeng Yang, Heyuan Guan, Huihui Lu   +6 more
doaj   +1 more source