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We report a neural-network based erbium-doped fiber amplifier (EDFA) gain model built from experimental measurements. The model shows low gain-prediction error for both the same device used for training (MSE $\leq$ 0.04 dB$^2$) and…

Signal Processing · Electrical Eng. & Systems 2020-09-14 Francesco Da Ros , Uiara Celine de Moura , Metodi P. Yankov

We report design and subsequent fabrication of an intrinsically gain flattened Erbium doped fiber amplifier (EDFA) based on a highly asymmetrical and concentric dual-core fiber, inner core of which was only partially doped. Phase-resonant…

To enable intelligent and self-driving optical networks, high-accuracy physical layer models are required. The dynamic wavelength-dependent gain effects of non-constant-pump erbium-doped fiber amplifiers (EDFAs) remain a crucial problem in…

Signal Processing · Electrical Eng. & Systems 2023-10-18 Yichen Liu , Xiaomin Liu , Yihao Zhang , Meng Cai , Mengfan Fu , Xueying Zhong , Lilin Yi , Weisheng Hu , Qunbi Zhuge

We propose a physics-informed EDFA gain model based on the active learning method. Experimental results show that the proposed modelling method can reach a higher optimal accuracy and reduce ~90% training data to achieve the same…

Signal Processing · Electrical Eng. & Systems 2022-06-14 Xiaomin Liu , Yuli Chen , Yihao Zhang , Yichen Liu , Lilin Yi , Weisheng Hu , Qunbi Zhuge

Space-division multiplexing (SDM), whereby multiple spatial channels in multimode and multicore optical fibers are used to increase the total transmission capacity per fiber, is being investigated to avert a data capacity crunch and reduce…

The gain spectrum of an Erbium-Doped Fiber Amplifier (EDFA) has a complex dependence on channel loading, pump power, and operating mode, making accurate modeling difficult to achieve. Machine Learning (ML) based modeling methods can achieve…

Networking and Internet Architecture · Computer Science 2025-03-24 Agastya Raj , Dan Kilper , Marco Ruffini

A lot of research is focused on all-optical signal processing, aiming to obtain effective alternatives to existing data transmission platforms. Amplification of light in fiber optics, such as in Erbium-doped fiber amplifiers, is especially…

Materials Science · Physics 2015-04-07 Giovanni Morello , Andrea Camposeo , Maria Moffa , Dario Pisignano

When we can not assume a large amount of annotated data , active learning is a good strategy. It consists in learning a model on a small amount of annotated data (annotation budget) and in choosing the best set of points to annotate in…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Umang Aggarwal , Adrian Popescu , Céline Hudelot

Attention mechanisms have emerged as important tools that boost the performance of deep models by allowing them to focus on key parts of learned embeddings. However, current attention mechanisms used in speaker recognition tasks fail to…

Sound · Computer Science 2022-07-21 Amirhossein Hajavi , Ali Etemad

Active learning aims to select a small subset of data for annotation such that a classifier learned on the data is highly accurate. This is usually done using heuristic selection methods, however the effectiveness of such methods is limited…

Computation and Language · Computer Science 2017-08-09 Meng Fang , Yuan Li , Trevor Cohn

Lack of enough labeled data is a major problem in building machine learning based models when the manual annotation (labeling) is error-prone, expensive, tedious, and time-consuming. In this paper, we introduce an iterative deep learning…

Computer Vision and Pattern Recognition · Computer Science 2019-01-15 Saeed S. Alahmari , Dmitry Goldgof , Lawrence O. Hall , Palak Dave , Hady Ahmady Phoulady , Peter R. Mouton

Accurate modeling of the gain spectrum in Erbium-Doped Fiber Amplifiers (EDFAs) is essential for optimizing optical network performance, particularly as networks evolve toward multi-vendor solutions. In this work, we propose a generalized…

Networking and Internet Architecture · Computer Science 2025-07-30 Agastya Raj , Zehao Wang , Tingjun Chen , Daniel C Kilper , Marco Ruffini

Optical amplification, crucial for modern communication and data center interconnects, primarily relies on erbium-doped fiber amplifiers (EDFAs) to enhance signals without distortion. While EDFAs were historically decisive for the…

Federated learning is a promising distributed machine learning paradigm that can effectively exploit large-scale data without exposing users' privacy. However, it may incur significant communication overhead, thereby potentially impairing…

Machine Learning · Computer Science 2024-08-07 Shiwei Li , Wenchao Xu , Haozhao Wang , Xing Tang , Yining Qi , Shijie Xu , Weihong Luo , Yuhua Li , Xiuqiang He , Ruixuan Li

Most of the existing learning models, particularly deep neural networks, are reliant on large datasets whose hand-labeling is expensive and time demanding. A current trend is to make the learning of these models frugal and less dependent on…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Sebastien Deschamps , Hichem Sahbi

The enhanced distributed channel access (EDCA) mechanism is used in current wireless fidelity (WiFi) networks to support priority requirements of heterogeneous applications. However, the EDCA mechanism can not adapt to particular…

Networking and Internet Architecture · Computer Science 2025-05-23 Qianren Li , Bojie Lv , Yuncong Hong , Rui Wang

Modern computing and communication technologies can make data collection procedures very efficient. However, our ability to analyze large data sets and/or to extract information out from them is hard-pressed to keep up with our capacities…

Machine Learning · Statistics 2019-01-30 Zhanfeng Wang , Yumi Kwon , Yuan-chin Ivan Chang

Fully harvesting the gain of multiple-input and multiple-output (MIMO) requires accurate channel information. However, conventional channel acquisition methods mainly rely on pilot training signals, resulting in significant training…

Information Theory · Computer Science 2024-09-26 Shuaifeng Jiang , Qi Qu , Xiaqing Pan , Abhishek Agrawal , Richard Newcombe , Ahmed Alkhateeb

Few-mode fiber amplifier is widely under study to overcome the issue of internet traffic in optical communication. This article proposes annulus core few-mode erbium doped fiber (FM-EDF) with annulus or extra annulus doping for…

Optics · Physics 2016-05-04 Ankita Gaur , Vipul Rastogi

Predictable Feature Analysis (PFA) (Richthofer, Wiskott, ICMLA 2015) is an algorithm that performs dimensionality reduction on high dimensional input signal. It extracts those subsignals that are most predictable according to a certain…

Machine Learning · Computer Science 2017-12-05 Stefan Richthofer , Laurenz Wiskott
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