检索结果-内蒙古大学图书馆

Conference on all-optical communication systems - architecture, control, and network issues iiI

作者： Zhang, XJ Qiao, CM SUNY/Buffalo (United States)

ISBN: (纸本)0819426636

all-to-all Personalized communication (AAPC) requires each of the N nodes in a network to send a unique message to each of the other N - 1 nodes. In this paper, we study the problem of scheduling AAPC in WDM rings with ii wavelengths and T transmitter-receiver pairs per node. We first determine the theoretical lower bound on the schedule length in a unidirectional ring with negligible tuning delay. A scheduling method based on a ''recursive packing procedure'' is then proposed. Two extensions of the above work are also made. First, we use a similar method to schedule AAPC in bidirectional rings with a small T, which achieves a better schedule performance than the method in [1]. Second, we modify the schedule to take into account the effects of non-negligible tuning delay. The schedules derived in this paper can achieve the minimum length for some values of K and T, and a near minimum length in other cases.

关键词： WDM ring all-to-all personalized communication scheduling virtual topology tuning delay

来源：评论

学校读者我要写书评

暂无评论

Fiber to the Room: Key Technologies, Challenges, and Future Prospects

arXiv

引用

arXiv 2025年

作者： Cai, Jinhan Zhang, Xiaolong Wang, Xiang Chang, Tianhai Shen, Gangxiang Jiangsu Provincial Laboratory for Advanced Optical Transmission and Switching Networks Jiangsu New Optical Fiber Technology and Communication Network Engineering Research Center Suzhou Key Laboratory of Advanced Optical Communication Network Technology School of Electronic and Information Engineering Soochow University Jiangsu Province 215006 China Huawei Technology China

Fiber to the Room (FTTR) is a next-generation access network designed to deliver high bandwidth, low latency, and room-level optical coverage. This paper presents a comprehensive analysis of the FTTR system architecture and protocol stack, focusing on three key technical aspects: centralized scheduling and control, integrated management and maintenance, and green energy-saving mechanisms. A simplified FTTR architecture based on the convergence of the medium access control (MAC) and physical (PHY) layers is introduced to enhance coordination and scheduling efficiency. An extended remote management scheme, based on the optical network unit management and control interface (OMCI), is described to enable unified control across main fiber units (MFUs) and sub-fiber units (SFUs). Furthermore, a service-aware energy-saving framework is discussed for dynamic power optimization. The paper also explores the integration of artificial intelligence (AI) and passive sensing into FTTR systems to support intelligent scheduling, energy management, and environment-aware optimization. These insights provide technical guidance for the scalable deployment and future evolution of FTTR networks. Copyright © 2025, The Authors. all rights reserved.

关键词： Fiber to the x

来源：评论

学校读者我要写书评

暂无评论

Frequency chirp in asymmetric Fabry-Perot electroabsorption modulators for use in the local access network

Frequency chirp in asymmetric Fabry-Perot electroabsorption ...

引用

Conference on all-optical communication systems - architecture, control, and network issues ii

作者： Leeson, MS MANCHESTER METROPOLITAN UNIV DEPT ELECT & ELECT ENGNCTR COMMUN NETWORKS RESMANCHESTER M1 5GDLANCSENGLAND

ISBN: (纸本)0819423211

Frequency chirp in modulator devices is of increasing importance at higher bit rates and increased transmission distances. The chirping behavior of reflective, resonant electroabsorptive optical modulators is analyzed and compared to the non-resonant case for a Framz-Keldysh effect based device. The chirp is found to display oscillatory behavior which is explained by the interaction of the electric field induced changes in complex refractive index with the cavity. The effect of a front face reflectivity lower than that for matching is shown to be poorer modulation and chirping performance. If the front face reflectivity is greater than that needed to match then negative chirp is possible but the insertion loss is greater than 8 dB. By fine tuning the length of the device it is shown that this can be reduced to 3 dB producing a contrast ratio of 4.5 dB and -500 MHz chirp for 400 ps, 15V pulses.

关键词： access network reflection modulators frequency chirp Franz-Keldysh Effect

来源：评论

学校读者我要写书评

暂无评论

Evaluation of a model of blocking probability in all-optical mesh networks without wavelength changers

Evaluation of a model of blocking probability in all-optical...

引用

Conference on all-optical communication systems: architecture, control and network issues

作者： Barry, RA Marquis, D MIT LINCOLN LABLEXINGTONMA 02173

ISBN: (纸本)0819419788

We describe the design and performance of a wide-area all-optical network. An improved model of the benefits of wavelength changers in all-optical mesh networks is presented and comparisons are made to simulations. The model is shown to be accurate for a moderate number of wavelengths and a small blocking probability for a variety of networks.

关键词： all-optical networks wavelength changers network modeling

来源：评论

学校读者我要写书评

暂无评论

Simulation of distortion in multi-carrier subcarrier multiplexed optical communication systems employing direct intensity modulation of semiconductor lasers

Simulation of distortion in multi-carrier subcarrier multipl...

引用

Conference on all-optical communication systems - architecture, control, and network issues ii

作者： Haldar, MK Garg, HK Chia, KB Mendis, FVC NATL UNIV SINGAPORE DEPT ELECT ENGNCOMMUN & MICROWAVES DIVSINGAPORE 119260SINGAPORE

ISBN: (纸本)0819423211

Direct intensity modulation of semiconductor lasers in subcarrier multiplexed (SCM) optical fiber communication systems is of interest because of its simplicity and the possibility of integration of the drive electronics with the laser diode. Direct modulation also produces distortion which degrades system performance. In this paper, we extend a static numerical simulation method for multi-carrier SCM systems to a dynamic simulation employing rate equations. We first show that the results of our simulation agree with analytical results for multi-carrier SCM systems obtained from perturbation theory in the absence of optical reflection into the semiconductor laser. We proceed with the calculation of distortion in the presence of weak reflections. We show that the distortion is lower than what is expected from previous analytical considerations for two subcarriers. Our simulation can also take into account the effect of overmodulation in a dynamic manner. However, our simulation does not take into account the distortion due to device imperfections.

关键词： subcarrier multiplexing intensity modulation semiconductor lasers distortion overmodulation rate equations CATV

来源：评论

学校读者我要写书评

暂无评论

Supervisory system and data communication channel for WDM-based transmission systems

Supervisory system and data communication channel for WDM-ba...

引用

Conference on all-optical communication systems - architecture, control, and network issues iiI

作者： Yoon, JI Park, CS Electronics and Telecommunications Research Institute (South Korea)

ISBN: (纸本)0819426636

In this paper, we introduce a structural model for WDM(Wavelength Division Multiplexing)based LT(Line Termination) systems containing the fundamental functions recommended by ITU-T, and we describe how to configure the supervisory system and data communication channels to be adaptable to the WDM-based transmission systems considering compatibility with the SDH-based supervisory systems. Also we propose that two new reference points(N2 and N3) be added to the MCF(Message communication Function) like N and P from the view point of the telecommunication management network.

关键词： WDM transmission SDH DCC supervisory system data communication channels

来源：评论

学校读者我要写书评

暂无评论

On an adaptive algorithm for routing in all-optical networks

On an adaptive algorithm for routing in all-optical networks

引用

Conference on all-optical communication systems - architecture, control, and network issues iiI

作者： Sengupta, A Bandyopadhyay, S Balla, AR Jaekel, A Dept. of Computer Science University of South Carolina Columbia SC 29208 United States School of Computer Science University of Windsor Windsor ON N9B 3P4 Canada

ISBN: (纸本)0819426636

In this paper, we study an adaptive algorithm for routing in an all-optical wavelength routed network where a lightpath is dynamically created in response to a request for communication and the WDM channels constituting the lightpath are reclaimed when the communication is over. We have proposed three possible distributed strategies to determine, if possible, a lightpath when there is a request for communication. Each of these strategies have their advantages and disadvantages in terms of the expected blocking probability and the set-up time. We consider the Kautz digraph as the network topology and study the performance of our distributed strategies through simulation.

关键词： optical network dynamic lightpath assignment all-optical networks virtual wavelength translation

来源：评论

学校读者我要写书评

暂无评论

The evolution of the optical access network and the related technical issues

The evolution of the optical access network and the related ...

引用

Conference on all-optical communication systems: architecture, control and network issues

作者： VanderPlas, G VandeVoorde, I ALCATEL CORP RES CTR LOCAT ANTWERP B-2018 ANTWERPBELGIUM

ISBN: (纸本)0819419788

Currently, the developed bi-directional broadband Passive optical networks (PONs) have a maximum splitting factor around 32 and a range less than 20km. Due to the expected switching node consolidation the access network will have to cover a wider range. An access network based on a cascade of PONs is proposed. optical transmission is supported by the introduction of optical amplifiers, offering the advantage oftransparency. In this paper, the technological issues to realise a high split, wide range PON are discussed. Main focus is on the realisation of a node amplifying a burst mode signal, and the reliability and upgradebility of such networks. © 1995 SPIE.

关键词： passive optical networks access networks broadband ATM optical amplifiers

来源：评论

学校读者我要写书评

暂无评论

architectures for 100 km 2048 split bidirectional SuperPONs from ACTS-PLANET

Architectures for 100 km 2048 split bidirectional SuperPONs ...

引用

Conference on all-optical communication systems - architecture, control, and network issues ii

作者： vanDeventer, MO Angelopoulos, JD Binsma, JJM Boot, AJ Crahay, P Jaunart, E Peters, PJM Phillips, AJ Qiu, XZ Senior, JM Valvo, M Vandewege, J Vetter, P VandeVoorde, I KPN RES ROYAL PTT NEDERLANDNL-2260 AK LEIDSCHENDAMNETHERLANDS

ISBN: (纸本)0819423211

This paper presents different architectures for high split, wide range bidirectional *** of the ways to achieve such SuperPONs is by the introduction of erbium- doped-fiber-amplifiers or semiconductor optical amplifiers (SOA) in order to overcome the strongly increased power budgets in comparison to conventional PONs. This will however present new challenges in overcoming the 'noise- funneling' effect caused by the parallel amplifiers. Four different approaches are studied: 1) using of on/off switchable semiconductor optical amplifiers, 2) using parallel erbium-doped-fiber amplifiers, 3) using electro- optic regeneration, and 4) using conventional SDH, ATM and APON technology. A description is given of each architecture, including advantages and drawbacks. These architectures serve as input to further studies performed by the ACTS-PLANET consortium. The power-budget studies showed that it is technically feasible to develop a SuperPON with a 2048 split and a 70-100 km range.

关键词： optical fibre passive optical network PON APON SuperPON ACTS-PLANET access network architecture fibre-to-the-home fibre-to-the-curb fibre-to-the-premise

来源：评论

学校读者我要写书评

暂无评论

Spectrum partition technique for frequency control in large-scale all-optical networks

Spectrum partition technique for frequency control in large-...

引用

Conference on all-optical communication systems - architecture, control, and network issues iiI

作者： Amrani, A Roldan, J Zhang, YZ Prat, J Rafel, A Aventin, A Junyent, G Univ. Politecnica de Cataluna (Spain)

ISBN: (纸本)0819426636

all-optical communications based on OFDM techniques are very attractive for future telecommunications. However, the frequency instability of semiconductor laser diodes still constitutes an obstacle to exploit OFDM benefits. In this paper, we present a decentralized frequency control system suitable for large scale all-optical networks. Spectrum partitioning is proposed so that the controllable spectral range could be enlarged and link fault could be detected. Experimental results on monitoring and stabilizing a channel frequency in a local node, confirm the feasibility of the described method.

关键词： all-optical communications OFDM network frequency control network frequency synchronization

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：