Results 11 to 20 of about 76 (73)

Extreme Ultra‐Wideband Optoelectronic Frequency‐Modulated Continuous‐Wave Terahertz Radar

Laser &Photonics Reviews, Volume 17, Issue 11, November 2023., 2023
A novel photonic terahertz measurement system based on a frequency‐modulated continuous‐wave radar approach is presented. Hereby, frequency modulation bandwidths of more than 1.65 THz are achieved. The possibility of adjusting the operating range of the radar without necessary hardware adaptations is another unique feature.
Shiva Mohammadzadeh, Andreas Keil, Michael Kocybik, Lauri Maximilian Schwenson, Lars Liebermeister, Robert Kohlhaas, Björn Globisch, Georg von Freymann, Jörg Seewig, Fabian Friederich   +9 more
wiley   +1 more source

Terahertz link with orthogonal polarization over silicon dielectric waveguide

Electronics Letters, Volume 59, Issue 14, July 2023., 2023
This study aimed to increase data rates for terahertz range communications through dual orthogonal polarizations over a dielectric silicon waveguide platform, achieving higher than 20 Gbit/s at 0.3‐THz band for each polarization. Abstract The authors studied the transmission performance for orthogonal polarization fundamental modes in a dielectric ...
Ratmalgre Koala, Kei Iyoda, Masayuki Fujita, Tadao Nagatsuma   +3 more
wiley   +1 more source

All‐Optical Parametric‐Assisted Oversampling and Decimation for Signal Denoising Amplification

Laser &Photonics Reviews, Volume 17, Issue 6, June 2023., 2023
In digital signal processing, decimation can be employed to mitigate noise content by linearly combining consecutive samples of an oversampled signal. This article introduces an optical counterpart of digital decimation in a process referred to as Parametric‐assisted Oversampling and Decimation (POD).
Manuel P. Fernandez, Saket Kaushal, Benjamin Crockett, Laureano A. Bulus‐Rossini, Pablo A. Costanzo‐Caso, José Azaña   +5 more
wiley   +1 more source

Optical Vortex Brillouin Laser

Laser &Photonics Reviews, Volume 17, Issue 4, April 2023., 2023
Stable oscillations of optical vortices and acoustic modes in a Brillouin laser are demonstrated for the first time based on chiral photonic crystal fiber, which robustly supports helical Bloch modes that carry circularly polarized optical vortex and display circular birefringence. Topology‐selective stimulated Brillouin scattering effect dictates that
Xinglin Zeng, Philip St. J. Russell, Yang Chen, Zheqi Wang, Gordon K. L. Wong, Paul Roth, Michael H. Frosz, Birgit Stiller   +7 more
wiley   +1 more source

Multi‐level wireless transmission using resonant tunneling diodes in 300‐GHz band

Electronics Letters, Volume 59, Issue 5, March 2023., 2023
Abstract The authors report on a terahertz band wireless communication experiment employing a resonant tunneling diode receiver (Rx) and uni‐travelling carrier photodiode transmitter. An intermediate‐frequency based transmission facilitates a low‐complexity envelope‐detection type Rx architecture for complex‐modulated signals. Forward error correction
Julian Webber, Takumi Yamamoto, Naoki Nishigami, Yosuke Nishida, Masayuki Fujita, Tadao Nagatsuma   +5 more
wiley   +1 more source

Stable Optical Frequency Comb Distribution Enabled by Hollow‐Core Fibers

Laser &Photonics Reviews, Volume 16, Issue 11, November 2022., 2022
Accuracy of many scientific experiments and industrial applications could benefit from the most accurate optical frequency combs, which, however, are typically located only in a few dedicated metrology laboratories. Distribution of these highly‐stable combs is suggested beyond these dedicated laboratories using hollow core fibers, which is shown to ...
Zitong Feng, Giuseppe Marra, Xi Zhang, Eric R. Numkam Fokoua, Hesham Sakr, John R. Hayes, Francesco Poletti, David J. Richardson, Radan Slavík   +8 more
wiley   +1 more source

Direct Absorption and Photoacoustic Spectroscopy for Gas Sensing and Analysis: A Critical Review

Laser &Photonics Reviews, Volume 16, Issue 8, August 2022., 2022
A literature survey on gas sensing and analysis covers both direct optical absorption spectroscopy and photoacoustic spectroscopy, both approaches being applicable to either Fourier transform infrared spectroscopy or tunable laser spectroscopy. The theoretical detection limits serve as guidelines.
Alaa Fathy, Yasser M. Sabry, Ian W. Hunter, Diaa Khalil, Tarik Bourouina   +4 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

Brillouin Optical Correlation‐Domain Reflectometry With Polymer Fibers Under Scrambled Polarization Enabled by Angled Connections

Advanced Sensor Research, Volume 5, Issue 2, February 2026.
Polymer optical fibers enable flexible distributed sensing but suffer from reflection noise. This study shows that angled physical contact connectors suppress Fresnel reflections, allowing polarization scrambling in Brillouin optical correlation‐domain reflectometry.
Shimbu Shirai, Yoshikazu Kobayashi, Osakazu Kimoto, Andreas Ioannou, Kyriacos Kalli, Yosuke Mizuno   +5 more
wiley   +1 more source

Ultra‐Sensitive Dual‐Resonator Graphene Pressure Sensor with Temperature Self‐Compensation

Advanced Science, Volume 13, Issue 5, 27 January 2026.
This work presents a graphene resonator sensor based on a dual‐cavity interferometric scheme that achieves high sensitivity to pressure variations. Its lightweight and compact design enables drone‐based field experiments, underscoring the promise of graphene optomechanical devices for portable and scalable sensing applications.
Zhen Wan, Cheng Li, Zhengwei Wu, Pengcheng Zhao, Yang Liu, Wanting Li, Shangchun Fan, Wei Jin   +7 more
wiley   +1 more source