Results 11 to 20 of about 660 (137)

Gain Equalization for Few-Mode Erbium-Doped Fiber Amplifiers via Strong Mode Coupling [PDF]

Applied Sciences, 2022
Few-mode erbium-doped fiber amplifiers (FM-EDFAs) are one of the most important optical subsystems for successful space division multiplexed transmission systems. In this paper, we propose a new FM-EDFA designed to achieve significantly reduced differential modal gain (DMG) via strong mode coupling. Using a new numerical model based on a fiber transfer
Yaping Liu, Zhiqun Yang, Xutao Wang, Yongmin Jung, Lin Zhang   +4 more
openaire   +4 more sources

Gain Characteristics of Few-Mode EDFA With Different Pump

IEEE Photonics Journal, 2022
Few-mode erbium-doped fiber amplifier (FM-EDFA) is a key device to achieve power compensation in long-haul mode division multiplexing (MDM) optical system.
Wenxuan Xu, Li Pei, Jianshuai Wang, Jingjing Zheng, Zhiqi Li, Tigang Ning, Li Jing, Guobin Ren   +7 more
doaj   +1 more source

A Multi-Layer Erbium-Doped Air-Hole-Assisted Few-Mode Fiber with Ultra-Low Differential Modal Gain

Photonics, 2022
The air-hole assisted few-mode fiber (AH-FMF) enables modal intensity balance and offers a profound prospect in gain equalization with the combination of adaptive ion doping.
Zhiqi Li, Li Pei, Jingjing Zheng, Jianshuai Wang, Wenxuan Xu, Tigang Ning, Jing Li   +6 more
doaj   +1 more source

Optimization criteria and design of few-mode Erbium-doped fibers for cladding-pumped amplifiers

Optics Express, 2023
We propose a novel optimization method that combines two design criteria to reduce the differential modal gain (DMG) in few-mode cladding-pumped erbium-doped fiber amplifiers (FM-EDFAs). In addition to the standard criterion that considers the mode intensity and dopant profile overlap, we introduce a second criterion that ensures that all doped regions
Pierre-Olivier Janvier, Charles Matte-Breton, Kaboko Jean-Jacques Monga, Lixian Wang, Leslie Rusch, Sophie LaRochelle   +5 more
openaire   +2 more sources

The Impact of Fiber Core Ellipticity and Modal Coherency on Few Moded Erbium Doped Fiber Amplifiers [PDF]

39th European Conference and Exhibition on Optical Communication (ECOC 2013), 2013
We numerically demonstrate that the few moded erbium doped fiber amplifier models based on linearly polarized and vector modes are equivalent when the fiber core exhibits slight ellipticity and the signals in the guided modes are incoherent. These conditions are fulfilled in a practical mode division multiplexed system.
Lim, Ee Leong, Dasgupta, S., Kang, Qiongyue, Daniel, J.M.O., Poletti, F., Alam, S.-U., Richardson, David J.   +6 more
openaire   +1 more source

Novel reactive molten core fabrication employing in-situ metal oxidation: Erbium-doped intrinsically low Brillouin scattering optical fiber

Optical Materials: X, 2019
Reported here is an erbium-doped, few-mode, intrinsically low Brillouin gain optical fiber fabricated using a novel reactive molten core (rMC) process involving in-situ metal oxidation.
M. Tuggle, C. Kucera, T. Hawkins, M. Cavillon, G. Pan, N. Yu, P. Dragic, J. Ballato   +7 more
doaj   +1 more source

L-Band Erbium-Doped Fiber Optimization and Transmission Investigation

Photonics
The optical spectrum resource in the C-band has been used up due to dense wavelength division multiplexing (DWDM). Because of devices’ compatibility with both the C-band and the L-band, the L-band is a good choice for further capacity expansion ...
Kaihua Hu, Li Pei, Jianshuai Wang, Zhouyi Hu, Wenxuan Xu, Long Zhang, Jing Li, Li Zhong   +7 more
doaj   +1 more source

Stiffness‐Activated Stellate Cells Drive Pancreatic Cancer Liver Colonization via GMFG‐TNS4 Signaling

Advanced Science, EarlyView.
Fibrotic liver stiffness activates hepatic stellate cells through Piezo1‐dependent calcium influx and ER stress, promoting EV‐associated GMFG release. Delivered GMFG engages TNS4 in pancreatic cancer cells, triggering FAK/AKT signaling, adhesion, and fatty acid synthesis.
Biwen Zhu, Jian Wan, Xue Zhang, Jiashuai Yan, Xi Chen, Xiaoqi Guan, Qianqian Ren, Tao Yang, Di Wu, Qingsong Guo, Yibing Guo, Yuhua Lu   +11 more
wiley   +1 more source

Stimulated Forward Brillouin Scattering in Subwavelength Grating Silicon Membranes

Laser &Photonics Reviews, EarlyView.
This work proposes a novel strategy to achieve large Brillouin scattering with independent control of the optical and mechanical modes using subwavelength silicon membranes. We experimentally demonstrate remarkably high Brillouin gain, resulting in an on/off Stokes gain of 3 dB and anti‐Stokes loss of 4 dB in a 6 mm‐long waveguide with 35 mW of on‐chip
Paula Nuño Ruano, Jianhao Zhang, David González‐Andrade, Daniele Melati, Eric Cassan, Pavel Cheben, Laurent Vivien, Norberto Daniel Lanzillotti‐Kimura, Carlos Alonso‐Ramos   +8 more
wiley   +1 more source

EDFA Design and Analysis for WDM Optical Systems Based on Modal Multiplexing

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Modal multiplexing (MDM) is a core technology to allow a capacity increase in modern optical systems. However, in MDM links, the amplified WDM signal suffers not only from lack of spectral gain equalization but also from unequal modal gain.
Adolfo Fernandes Herbster, Murilo Araújo Romero   +1 more
doaj   +1 more source