A5013581996- Optical Network Technologies
- Advanced Photonic Communication Systems
- Glass properties and applications
- Solid State Laser Technologies
- Luminescence Properties of Advanced Materials
- Advanced Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Advanced Fiber Laser Technologies
- Photonic Crystals and Applications
- Advanced biosensing and bioanalysis techniques
- Photorefractive and Nonlinear Optics
- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- Ga2O3 and related materials
- Laser Design and Applications
- Advanced Wireless Communication Techniques
- DNA and Nucleic Acid Chemistry
- Phytochemical Studies and Bioactivities
- Cultural Heritage Materials Analysis
- Pigment Synthesis and Properties
Shanghai Institute of Optics and Fine Mechanics
2020-2024
Chinese Academy of Sciences
2014-2024
Bohai University
2023-2024
Suzhou University of Science and Technology
2023-2024
Hebei University of Engineering
2024
Shanghai University
2017-2023
State Key Laboratory on Integrated Optoelectronics
2022
Jilin University
2022
Shanghai Laser Technology Institute
2022
University of Chinese Academy of Sciences
2020-2022
The prevalent DNA modification in higher organisms is the methylation of cytosine to 5-methylcytosine (5mC), which partially converted 5-hydroxymethylcytosine (5hmC) by Tet (ten eleven translocation) family dioxygenases. Despite their importance epigenetic regulation, it unclear how these modifications are reversed. Here, we demonstrate that 5mC and 5hmC oxidized 5-carboxylcytosine (5caC) dioxygenases vitro cultured cells. 5caC specifically recognized excised thymine-DNA glycosylase (TDG)....
We present a detailed study of set models for characterizing the gain, input and output powers single erbium-doped fiber amplifiers (EDFAs) networks EDFAs. The time dependent gain is described by ordinary differential equation average inversion level an EDFA with arbitrary number signal channels power levels propagation directions. In steady state, this becomes transcendental from which many important parameters are derived. Through perturbation analysis model, can be expressed explicitly in...
The effects of channel loss on an erbium-doped fiber amplifier (EDFA) in eight-channel WDM network are investigated. For the 1, 4, or 7 channels, surviving channels suffer power transients which can be both large and relatively fast. experiments agree well with a simple analytical model amplifier. Pump control, if it is fast enough, demonstrated to limit excursion channels.
In the modern era of molecular evidence-based medicine and advanced biomedical technologies, rapid, sensitive specific assay multiple pathogens is critical to, but largely absent from, clinical practice. Therefore, to improve current ordinary separation collection method, we report herein a strategy magnetism-resolved fluorescence quantification for near-simultaneous detection pathogens, followed by direct antimicrobial susceptibility testing (AST). To accomplish this strategy, utilized...
We demonstrated an efficient way to enhance and flatten the emission cross sections of Er
The authors demonstrate a two band architecture for an ultra-wideband erbium-doped silica fibre amplifier with record optical bandwidth of 80 nm. To obtain low noise figure and high output power, the bands share common first gain section have distinct second sections.
Power transients arising from cross-saturation in erbium-doped fibre amplifiers (EDFAs) are generally thought to be slower than 100 µs due the slow gain dynamics. This is a key advantage of EDFAs. The authors report on power 1 dB <3 chain five These fast variations result collective behaviour amplifier chain.
Link control, a new technique for protecting surviving channels on per-link basis from fast power transients resulting network reconfigurations or line failures, is demonstrated in 560-km eight-amplifier wavelength division multiplexed link carrying seven 2.5-Gb/s plus the control channel.
In recent years, tremendous progress has been made in the development of broadband erbium-doped fiber amplifiers (EDFAs), which form backbone high-capacity lighwave communication systems. Initially, use gain equalization filters increased bandwidth by a factor three (relative to first-generation deployed field). Subsequently, introduction two-band architecture, includes amplifier sections for C-band and L-band, resulted further doubling bandwidth. addition, this provides high output power...
A simple model is presented for characterising the dynamic gain of an erbium-doped fibre amplifier (EDFA). The time dependent described by a single ordinary differential equation EDFA with arbitrary number signal channels power levels and propagation directions. simulation results agree experimental data.
The first realization of a wavelength-selective switch (WSS) with direct integration few mode fibers (FMF) is fully described. free-space optics FMF-WSS dynamically steers spectral information-bearing beams containing three spatial modes from an input port to one nine output ports using phase light modulator. Sources dependent losses (MDL) are identified, analytically analyzed and experimentally confirmed on account different modal sensitivities fiber coupling in imperfect imaging at channel...
Abstract The 2D terahertz (THz) modulator, enabling efficient manipulation of such versatile band in nanoscale, is crucial for THz microdevices and systems, but its implementation difficult remains challenging practice. Here, a novel modulator based on single‐layered graphene under mechanical strain demonstrated. Bidirectional, i.e., both positive negative, modulation effect realized by utilizing unconventionally distributed strains graphene. Such found to be stable reversible, depth can...
We demonstrated broadband S-band (1460-1530 nm) amplification in Tm3+-doped fluorotellurite glass fibers (TDFTFs) by using a 1400/1570 nm dual-wavelength pump technique. TDFTFs based on TeO2-BaF2-Y2O3 (TBY) were fabricated rod-in-tube method. For an input signal power of 0 dBm (or 1 mW), positive net gain ranging from <1440 to 1546 was achieved 1.55-m-long TDFTF with Tm3+ doping concentration ∼4000 ppm, as the powers 1400 and 1570 lasers 1.7 W 0.14 W, respectively. The corresponding...
Challenges including rapid capacity degradation and reduced Coulombic efficiency due to the shuttle effect have hindered commercial viability of lithium-sulfur (Li-S) batteries. A novel sandwich-structured electrode with an optimized structure current collector interface design was presented as a free-standing positive for Li-S Fabricated via simple slurry coating process, embedded multiwalled carbon nanotubes within nanofiber composite films (PCNF/T). Owing superior conductivity weight in...
By optimising the detector threshold and using an optical reservoir channel, error-free transmission of 32 × 2.5 Gbit/s DWDM channels has been obtained over 125 km AllWave™ fibre semiconductor amplifiers.
Abstract In this work, we systematically study the spectroscopic properties of Tb 3+ /Dy co‐doped phosphate glasses in visible spectral region and explore sensitization role Dy enhancement fluorescence ions. Judd‐Ofelt parameters Ω 2 4 /Ω 6 glass as host for are calculated 21.60 × 10 ‐20 cm 0.73, respectively, based on measured absorption. Multiple energy transfer (ET) routes from to their efficiencies characterized, enhanced investigated, including emission strength spontaneous lifetime...
Tm 3+ doped fluoroaluminate glass fibers are fabricated by using a rod-in-tube method based on AlF 3 -BaF 2 -YF -MgF -PbF glasses. By 1400/1570 nm dual-wavelength upconversion pump technique, lasing at ∼2.3 µm is obtained from 2.3 m long fiber. The measured maximum unsaturated output power ∼111 mW for of 1.5/0.14 W nm, and the corresponding slope efficiency ∼11%. effect gain fiber length also investigated. Our results indicate that promising media constructing lasers.
Dynamic power excursion imposed on the amplified signal due to relaxation oscillations in laser and static residual variations gain arising from spectral-hole burning (SHB) were observed high-resolution measurements of automatic control (AGC) erbium-doped fiber amplifiers (EDFAs). These effects will limit ability AGC protect against transients wavelength-division multiplexed (WDM) optical networks.