Optics Communications, Journal Year: 2025, Volume and Issue: unknown, P. 131986 - 131986
Published: May 1, 2025
Language: Английский
Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 7(3), P. 230230 - 230230
Published: Jan. 1, 2024
A highly sensitive light-induced thermoelectric spectroscopy (LITES) sensor based on a multi-pass cell (MPC) with dense spot pattern and novel quartz tuning fork (QTF) low resonance frequency is reported in this manuscript. An erbium-doped fiber amplifier (EDFA) was employed to amplify the output optical power so that signal level further enhanced. The path length (OPL) ratio of volume (RLV) MPC 37.7 m 13.8 cm-2, respectively. commercial QTF self-designed trapezoidal-tip 9461.83 Hz were used as detectors sensor, target gas selected test performance system acetylene (C2H2). When constant at 1000 mW, minimum detection limit (MDL) C2H2-LITES can be achieved 48.3 ppb when using 24.6 QTF. improvement by factor 1.96 after replacing
Language: Английский
Citations
162
ACS Photonics, Journal Year: 2023, Volume and Issue: 10(7), P. 2149 - 2164
Published: May 17, 2023
Structured light recently highlighted the higher-dimensional control with many tailored degrees of freedom (DoFs) such as amplitude, wavelength, polarization, and orbital angular momentum (OAM), spurring extension fundamental science advanced applications, especially novel information carrier to meet requirement everlastingly increasing communication bandwidth security. In addition basic DoFs in light, there are also several complex hidden spin–orbital coupled vector beams, ray-wave geometric modes, spatiotemporal vortex rings, etc., extending structured manipulation. this Review, we summarize a systematic technical roadmap on how extend multiple step-by-step beyond conventional OAM creating new forms ultra-DoF present tutorial exploit carriers, recent assistance artificial intelligence or deep learning method, enhancing capacity, security, dimension for next-generation technologies.
Language: Английский
Citations
70
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Feb. 20, 2024
Abstract Structured optical materials create new computing paradigms using photons, with transformative impact on various fields, including machine learning, computer vision, imaging, telecommunications, and sensing. This Perspective sheds light the potential of free-space systems based engineered surfaces for advancing computing. Manipulating in unprecedented ways, emerging structured enable all-optical implementation mathematical functions learning tasks. Diffractive networks, particular, bring deep-learning principles into design operation to functionalities. Metasurfaces consisting deeply subwavelength units are achieving exotic responses that provide independent control over different properties can major advances computational throughput data-transfer bandwidth processors. Unlike integrated photonics-based optoelectronic demand preprocessed inputs, processors have direct access all degrees freedom carry information about an input scene/object without needing digital recovery or preprocessing information. To realize full architectures, diffractive metasurfaces need advance symbiotically co-evolve their designs, 3D fabrication/integration, cascadability, accuracy serve needs next-generation computing, telecommunication technologies.
Language: Английский
Citations
44
Photoacoustics, Journal Year: 2024, Volume and Issue: 36, P. 100594 - 100594
Published: Feb. 9, 2024
In this article, a mid-infrared all-fiber light-induced thermoelastic spectroscopy (LITES) sensor based on hollow-core anti-resonant fiber (HC-ARF) was reported for the first time. The HC-ARF applied as light transmission medium and gas chamber. constructed structure has merits of low loss, easy optical alignment, good system stability, reduced size cost. can be utilized to target strongest absorption lines. reversely-tapered SM1950 were spatially butt-coupled with V-shaped groove between two fibers facilitate entry. Carbon monoxide (CO) an line at 4291.50 cm
Language: Английский
Citations
31
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 29, 2025
Language: Английский
Citations
9
Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)
Published: Feb. 25, 2025
Abstract Pursuing higher data rate with limited spectral resources is a longstanding topic that has triggered the fast growth of modern wireless communication techniques. However, massive deployment active nodes to compensate for propagation loss necessitates high hardware expenditure, energy consumption, and maintenance cost, as well complicated network interference issues. Intelligent metasurfaces, composed number subwavelength passive or meta-atoms, have recently found be new paradigm actively reshape environment in green way, distinct from conventional works passively adapt surrounding. In this review, we offer unified perspective on how intelligent metasurfaces can facilitate three manners: signal relay, transmitter, processor. We start by basic modeling channel evolution passive, metasurfaces. Integrated various deep learning algorithms, cater ever-changing environments without human intervention. Then, overview specific experimental advancements using conclude identifying key issues practical implementations surveying directions, such gain knowledge migration.
Language: Английский
Citations
2
Advanced Photonics, Journal Year: 2023, Volume and Issue: 5(05)
Published: Aug. 30, 2023
As an inherent degree of freedom, total angular momentum (TAM) photons consisting spin and orbital has inspired many advanced applications attracted much attention in recent years. Probing TAM tailoring beam's spectrum on demand are great significance for TAM-based scenarios. We propose both theoretically experimentally a processor enabling tunable manipulation. Such consists set quasi-symmetric units, each unit is composed couple diffraction optical elements fabricated through polymerized liquid crystals. Forty-two single states employed to prove the concept. The favorable results illustrate good state selection performance, which makes it particularly attractive high-speed large-capacity data transmission, computing, high-security photon encryption systems.
Language: Английский
Citations
25
Advanced Photonics, Journal Year: 2023, Volume and Issue: 5(03)
Published: June 12, 2023
Orbital angular momentum (OAM) spectrum diagnosis is a fundamental building block for diverse OAM-based systems. Among others, the simple on-axis interferometric measurement can retrieve amplitude and phase information of complex OAM spectra in few shots. Yet, its single-shot retrieval remains elusive, due to signal–signal beat interference inherent measurement. Here, we introduce concept Kramers–Kronig (KK) receiver coherent communications domain, enabling rigorous, We explain detail working principle requirement KK method then apply technique precisely measure various characteristic states. In addition, discuss effects carrier-to-signal power ratio number sampling points essential rigorous evaluate performance on large set random high-dimensional spaces. Single-shot interferometry shows enormous potential characterizing states real time.
Language: Английский
Citations
17
Science China Physics Mechanics and Astronomy, Journal Year: 2024, Volume and Issue: 67(4)
Published: March 7, 2024
Language: Английский
Citations
8
Journal of Lightwave Technology, Journal Year: 2024, Volume and Issue: 42(20), P. 7282 - 7290
Published: June 28, 2024
Language: Английский
Citations
7