Results 11 to 20 of about 387 (134)

High external power narrow bandwidth erbium doped waveguide laser on thin film lithium niobate. [PDF]

Nanophotonics
Abstract Erbium‐doped waveguide lasers have attracted great interests in recent years due to their compact footprint, high scalability and low phase noise. In this work, by using a high‐external‐gain erbium‐doped thin‐film lithium niobate waveguide as the gain medium, a fiber‐Bragg‐grating based Fabry–Perot‐type laser is demonstrated with the low pump ...
Ma Y, Li M, Yu J, Fang Z, Wang M, Lin J, Zhang H, Cheng Y.   +7 more
europepmc   +2 more sources

Beam-steering metasurfaces assisted coherent optical wireless multichannel communication system. [PDF]

Nanophotonics, 2023
Abstract The metasurface based beam‐steering devices with the advantages of large steering angles, arbitrary channels and ultra‐compactness have played an important role for data allocation and exchange in the optical wireless communication. However, the current metasurface based optical wireless communication systems are mainly on intensity modulation
Tao J, You Q, Yang C, Li Z, Deng L, Wu M, Luo M, Wu L, Li C, Liu Z, He Z, Xiao X, Zheng G, Yu S.   +13 more
europepmc   +2 more sources

Nonlinear multimode photonics on-chip. [PDF]

Nanophotonics
Abstract Nonlinear integrated photonics, which takes advantage of the strong field enhancement in integrated waveguides to boost the efficiency of nonlinear effects, has paved the way for the demonstration of cutting‐edge applications. These achievements have also been made possible by the impressive progress in material engineering and fabrication ...
Vitali V, Bucio TD, Liu H, Haines J, Naik PU, Guasoni M, Gardes F, Pavesi L, Cristiani I, Lacava C, Petropoulos P.   +10 more
europepmc   +2 more sources

All‐Optical Parametric‐Assisted Oversampling and Decimation for Signal Denoising Amplification

Laser &Photonics Reviews, Volume 17, Issue 6, June 2023., 2023
In digital signal processing, decimation can be employed to mitigate noise content by linearly combining consecutive samples of an oversampled signal. This article introduces an optical counterpart of digital decimation in a process referred to as Parametric‐assisted Oversampling and Decimation (POD).
Manuel P. Fernandez, Saket Kaushal, Benjamin Crockett, Laureano A. Bulus‐Rossini, Pablo A. Costanzo‐Caso, José Azaña   +5 more
wiley   +1 more source

Photonic reservoir computing for nonlinear equalization of 64‐QAM signals with a Kramers–Kronig receiver

Nanophotonics, Volume 12, Issue 5, Page 925-935, March 2023., 2023
Abstract Photonic reservoirs are machine learning based systems that boast energy efficiency and speediness. Thus they can be deployed as optical processors in fiber communication systems to aid or replace digital signal equalization. In this paper, we simulate the use of a passive photonic reservoir to target nonlinearity‐induced errors originating ...
Sarah Masaad, Emmanuel Gooskens, Stijn Sackesyn, Joni Dambre, Peter Bienstman   +4 more
wiley   +1 more source

A MIMO‐Enabled Free Space Optical Link under Log‐Normal Fading/Gamma‐Gamma Channel: Exploring an Optimal Modulation Scheme

International Journal of Optics, Volume 2023, Issue 1, 2023., 2023
The technology of free‐space optical communication (FSOC) systems has some distinctive merits compared to other technologies. Its use is extremely beneficial to meet the exigencies of optical telecommunications and wireless networks (OTWNs). However, since the OTWNs transport a lot of data, the choice of a reliable modulation scheme is highly crucial ...
Haroun Errachid Adardour, Samir Kameche, Mehtab Singh, Haochong Huang   +3 more
wiley   +1 more source

Topology‐optimized silicon‐based dual‐mode 4 × 4 electro‐optic switch

Nanophotonics, Volume 11, Issue 21, Page 4869-4878, December 2022., 2022
Abstract Silicon‐based optical switch is one of the key components for on‐chip optical interconnect systems, and mode division multiplexing technology has been employed to boost optical switches’ channel capacity. However, the majority of the proven multimode optical switches have a switching time in the microsecond range, which is insufficient for ...
Jiaqi Niu, Shanglin Yang, Ting Zhou, Hao Jia, Xin Fu, Zhizun Zhao, Zhen Li, Gaolu Zhang, Changhua Chen, Lin Yang   +9 more
wiley   +1 more source

On the design of low phase noise and flat spectrum optical parametric frequency comb

APL Photonics, 2023
Optical frequency combs (OFCs) have become increasingly pervasive in recent years, with their advantageous frequency coherence properties enabling significant developments in numerous fields, such as optical communications, spectroscopy, and microwave ...
Yijia Cai, Ronit Sohanpal, Yuan Luo, Alexander M. Heidt, Zhixin Liu   +4 more
doaj   +1 more source

Enhanced Three-Core Three-Mode Optical Transmission System Based on Probabilistic Shaping With Low Complexity MIMO Equalization Algorithm

IEEE Access, 2020
A novel few-mode multi-core (FMMC) optical fiber transmission system based on probabilistic shaping (PS) with low complexity multiple-input multiple-output (MIMO) equalization method is proposed and demonstrated in this paper.
Songsong Qu, Bo Liu, Yaya Mao, Jianxin Ren, Xing Xu, Xiangyu Wu, Lei Jiang, Lijia Zhang   +7 more
doaj   +1 more source

Multi-Task Learning Convolutional Neural Network and Optical Spectrums Enabled Optical Performance Monitoring

IEEE Photonics Journal, 2022
We propose a simultaneous optical signal recognition (OSR) and optical signal-to-noise ratio (OSNR) monitoring method by using multi-task learning convolutional neural network (MTL-CNN) in conjunction with optical spectrums, which enables optical ...
Chenglong Yu, Haoyu Wang, Changjian Ke, Zi Liang, Sheng Cui, Deming Liu   +5 more
doaj   +1 more source