A5062280049- Photonic Crystal and Fiber Optics
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Glass properties and applications
- Advanced Fiber Optic Sensors
- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Advanced Photonic Communication Systems
- Laser Material Processing Techniques
- Semiconductor Lasers and Optical Devices
- Photorefractive and Nonlinear Optics
- Photonic and Optical Devices
- Lanthanide and Transition Metal Complexes
- Laser Design and Applications
- Optical Coherence Tomography Applications
- Analytical chemistry methods development
- Gas Sensing Nanomaterials and Sensors
- Silicon Nanostructures and Photoluminescence
- Cultural Heritage Materials Analysis
- Photonic Crystals and Applications
- ZnO doping and properties
- Perovskite Materials and Applications
- Laser-induced spectroscopy and plasma
- Advanced Optical Network Technologies
- Laser-Matter Interactions and Applications
Huazhong University of Science and Technology
2015-2024
Wuhan National Laboratory for Optoelectronics
2015-2024
Huazhong University of Science and Technology Hospital
2021
The gain bandwidth of the erbium-doped fiber amplifier limits enhancement transmission capacity in optical communication systems. This Letter reports an erbium-ytterbium co-doped phosphosilicate fiber, which is expected to increase by extending L-band 1623 nm. was fabricated modified chemical vapor deposition combined with solution doping technology. mechanism bandwidth-expansion inhibiting signal excited-state absorption investigated. When power and pump were maintained at -3.7dBm ∼720mW...
The 1.5-µm fiber laser is widely used in the fields of lidar, remote sensing, and gas monitoring because its advantages being eye-safe exhibiting low atmospheric transmission loss. However, due to ∼1-µm amplified spontaneous emission (ASE) Er/Yb co-doped (EYDF), it difficult improve power. Here, we simulated effect Er3+ concentration seed power on ASE, fabricated a large mode area EYDF by modified chemical vapor deposition process. Additionally, piece ytterbium-doped was introduced into...
Bismuth-doped germanosilicate fiber (BGSF), the active media of amplifiers, has attracted widespread attention. Here, we report a BGSF with high bismuth concentration 0.075 wt. % and achieve high-efficiency E + S-band amplification, which was prepared by modified chemical vapor deposition (MCVD) process. The small signal absorption (SSA) unsaturated loss (UL) at 1310 nm are 1.32 0.11 dB/m, respectively. results show record only 45 m created, to best our knowledge, provides maximum gain 39.24...
Withthe advent of the 5G era, demand for data communication is increasing explosively. Extending L-band gain bandwidth considered to be most direct and effective approach capacity. However, signal excited state absorption (SESA) prevents from extending longer wavelength. In this report, Er <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> Ce are introduced into phosphosilicate fiber regulate SESA. The results show that addition Ce3+ can...
We report a bismuth-doped fiber with high bismuth active center concentration and low unsaturable loss, demonstrating record 16m E+S-band amplifier 47.9dB gain per unit length of 4.06dB/m at 1450nm.
Mode division multiplexing (MDM) is considered to be an efficient solution alleviate the exponentially increasing "capacity crunch". Here, we numerically and experimentally demonstrate a high power-efficiency, low differential mode gain (DMG) few-mode amplifier based on M-type double-cladding Er/Yb co-doped phosphosilicate fiber. With large-signal power of 4.1 dBm, average DMG <1.5 dB maximum >28 were achieved for LP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We report on the preparation and optical characteristics of an Yb(3+)-doped large core silica fiber with active prepared from nanoporous rod by glass phase-separation technology. The measurements show that has Yb(3+) concentration 9811 ppm weight, a low background attenuation 0.02 dB/m, absorption about 5.5 dB/m at 976 nm. laser performance presents high slope efficiency 72.8% for emission 1071 nm threshold 3 W within only 2.3 m length. It is suggested technology shows great potential...
Spatial division multiplexing (SDM) is one of the most important technologies that may help to solve future capacity crisis. However, date, SDM optical amplification still a challenge for its application. Herein, we numerically and experimentally demonstrated few-mode Er/Yb co-doped fiber amplifier (FM-EYDFA) extended L-band operation. A double cladding was fabricated expand bandwidth novel, best our knowledge, cladding-pumped pseudo-two-stage configuration proposed enhance gain. With an...
We report a numerical investigation on trench-assisted few-mode erbium-doped fiber amplifier supporting 6 spatial modes with very low differential modal gain. The is based the experimentally measured parameters of extended L-band Er 3+ doped fiber. results show that gain covering spectral range from 1570 to 1616 nm was reduced as 0.28 dB by mode hybrid core pumped architecture at 1550 pump wavelength. Compared cladding pumping, our method achieved efficiency increased 23.1% and smaller when...
Recent advances in high-power fiber lasers have imposed several pairs of higher requirements on materials, such as larger core/higher homogeneity and doping level/lower numerical aperture. However, these characteristics conflict with each other silica fibers are almost impossible to reconcile by traditional preparation technologies. Here, we developed 3D nanoporous rods based glass phase-separation technology address conflicting requirements. Benefiting from uniformly distributed nanopores,...
With the continuous development of mobile internet, cloud computing, Internet things, and 5G, annual growth rate existing communication transmission capacity is far from meeting growing demand. The gain bandwidth L-band erbium-doped fiber amplification (EDFA) has become main factor for limiting extension. Owing to its negative effect on noise figure after 1580 nm, excited state absorption (ESA) regarded as a key that directly limits expansion EDFA. If ESA coefficient same value stimulated...
Extending the gain bandwidth of L-band optical fiber amplifier has provoked a widespread interest. To date, achieving high-efficiency extended amplification remains challenge. Here, we report cladding-pumped Er/Yb co-doped alumino-phosphosilicate fiber, prepared by modified chemical vapor deposition process. We demonstrate efficiency glass for with per unit length 0.45 dB/m at 1625 nm and ripple ∼9.4 dB. For 0.8 W pump power, exhibits 20 dB covering 1575-1625 6.9 noise figure nm....
In this paper, high Er 3+ concentration erbium doped fiber (EDF) and erbium-ytterbium co-doped (EYDF) were fabricated for the seed master oscillator power amplifier (MOPA) system of single-frequency laser. An in-band pumping source with wavelength 1535 nm was proposed to improve efficiency in ring-cavity. A slope 23.8% an output 49 mW achieved laser linewidth measured be 800 Hz. MOPA system, a piece EYDF used firstly absorb backward 1 µm amplified spontaneous emission (ASE) signal from seed....
We report a Yb3+ heavily doped photonic crystal fiber with 30 μm core diameter manufactured for the first time by an alternative technique. Silica rods of 3 mm and length 280 were prepared sodium-borosilicate glass phase-separation technology. The measurements show that has concentration 22810 ppm weight, resultant absorption approximately 8.5 dB/m at 976 nm. ions are distributed throughout excellent homogeneity. laser performance demonstrates high slope efficiency 64.5% emission 1033.4 nm...