Next-generation optical access seamless Evolution: concluding results of the European FP7 project OASE

Increasing bandwidth demand drives the need for next-generation optical access (NGOA) networks that can meet future end-user service requirements. This paper gives an overview of NGOA solutions, the enabling optical access network technologies, architecture principles, and related economics and business models. NGOA requirements (including peak and sustainable data rate, reach, cost, node consolidation, and open access) are proposed, and the different solutions are compared against such requirements in different scenarios (in terms of population density and system migration). Unsurprisingly, it is found that different solutions are best suited for different scenarios. The conclusions drawn from such findings allow us to formulate recommendations in terms of technology, strategy, and policy. The paper is based on the main results of the European FP7 OASE Integrated Project that ran between January 1, 2010 and February 28, 2013

On wavelength-routed networks with reversible wavelength channels

published_or_final_versio

All Optical Signal Processing Technologies in Optical Fiber Communication

Due to continued growth of internet at starling rate and the introduction of new broadband services, such as cloud computing, IPTV and high-definition media streaming, there is a requirement for flexible bandwidth infrastructure that supports mobility of data at peta-scale. Elastic networking based on gridless spectrum technology is evolving as a favorable solution for the flexible optical networking supportive next generation traffic requirements. Recently, research is centered on a more elastic spectrum provision methodology than the traditional ITU-T grid. The main issue is the requirement for a transmission connect, capable of accommodating and handling a variety of signals with distinct modulation format, baud rate and spectral occupancy. Segmented use of the spectrum could lead to the shortage of availableness of sufficiently extensive spectrum spaces for high bitrate channels, resulting in wavelength contention. On-demand space assignment creates not only deviation from the ideal course but also have spectrum fragmentation, which reduces spectrum resource utilization. This chapter reviewed the recent research development of feasible solutions for the efficient transport of heterogeneous traffic by enhancing the flexibility of the optical layer for performing allocation of network resources as well as implementation of optical node by all optical signal processing in optical fiber communication

Effective fiber bandwidth utilization in TDM WDM optical networks

Ph.DDOCTOR OF PHILOSOPH

Integration of Hybrid Passive Optical Networks (PON) with Radio over Fiber (RoF)

A cost effective, robust, and high capacity access network necessitated to meet the mounting customer demands for bandwidth-desirous services. A remarkable evolution of access networks is observed both in wired and wireless, predominantly driven by ever-changing bandwidth requirements. A wireless connection releases the end user from the restrictions of a physical link to a network that results in mobility, flexibleness, and ease of use. Whereas, optical networks offer immense amount of bandwidth that appease the most bandwidth voracious customers compared to bandwidth limited wireless networks. The integration of wired and wireless domains in the access landscape that presents a technical analysis of optical architectures suitable to support radio over fiber (RoF) is the objective of this chapter. Investigate the main trends that drive the merger of fiber and wireless technologies in access networks. Moreover, study the primary terms and the particular transmission features of integrated fiber-radio links to form a well-defined classification of hybrid systems and techniques. This work also recognizes the major problems for realization of RoF systems and examines the limitation, advantages, and diversity of integrated RoF-PON technology

Internetworking architectures for optical network units in a wavelength division multiplexed passive optical network.

Zhao, Qiguang.Thesis (M.Phil.)--Chinese University of Hong Kong, 2007.Includes bibliographical references (leaves 72-76).Abstracts in English and Chinese.Chapter Chapter 1 --- Introduction --- p.1Chapter 1.1 --- Telecommunications network hierarchy --- p.2Chapter 1.2 --- PON architectures for access networks --- p.4Chapter 1.2.1 --- TDM-PON --- p.5Chapter 1.2.2 --- WDM-PON --- p.7Chapter 1.3 --- Motivation of this thesis --- p.8Chapter 1.4 --- Outline of this thesis --- p.11Chapter Chapter 2 --- Previous Internetworking Architectures for Optical Network Units in Passive Optical Networks --- p.12Chapter 2.1 --- Introduction --- p.13Chapter 2.2 --- Previous internetworking architectures with ONU-broadcast capabilityChapter 2.2.1 --- Virtual ring network construction --- p.14Chapter 2.2.2 --- Reflection mechanism employing a FBG --- p.15Chapter 2.2.3 --- Loop-back mechanism in TDM-PON --- p.16Chapter 2.3 --- Previous internetworking architectures with ONU-VPGs formation capability --- p.17Chapter 2.3.1 --- E-CDMA application --- p.17Chapter 2.3.2 --- SCM technique --- p.18Chapter 2.3.3 --- Reflective waveband grouping mechanism --- p.20Chapter 2.4 --- Previous protection scheme for internetworking architectures --- p.21Chapter 2.4.1 --- Local ring protection in TDM-PON --- p.21Chapter 2.5 --- Summary --- p.22Chapter Chapter 3 --- Novel Internetworking Architecture with ONU-Broadcast Capability in a WDM-PON --- p.24Chapter 3.1 --- Introduction --- p.25Chapter 3.2 --- Network topology and wavelength assignment --- p.26Chapter 3.3 --- Operation principle --- p.27Chapter 3.4 --- Experimental demonstration --- p.31Chapter 3.5 --- Power budget and scalability --- p.34Chapter 3.6 --- Summary --- p.36Chapter Chapter 4 --- Novel Internetworking Architectures with ONU- VPGs Formation Capability in a WDM-PON --- p.37Chapter 4.1 --- Introduction --- p.38Chapter 4.2 --- Novel architecture with ONU-VPGs formation based on RF tone technique --- p.39Chapter 4.2.1 --- Introduction --- p.39Chapter 4.2.2 --- Network topology and wavelength assignment --- p.40Chapter 4.2.3 --- Media access control protocol: CSMA/CA protocol --- p.42Chapter 4.2.4 --- Experimental demonstration --- p.43Chapter 4.2.5 --- Discussion --- p.47Chapter 4.2.6 --- Summary --- p.49Chapter 4.3 --- Novel architecture with ONU-VPGs formation in optical layer --- p.51Chapter 4.3.1 --- Introduction --- p.51Chapter 4.3.2 --- Network topology and wavelength assignment --- p.51Chapter 4.3.3 --- Operation principle --- p.54Chapter 4.3.4 --- Experimental demonstration --- p.56Chapter 4.3.5 --- Discussion --- p.58Chapter 4.3.6 --- Summary --- p.65Chapter 4.4 --- Comparisons --- p.66Chapter 4.5 --- Summary --- p.67Chapter Chapter 5 --- Summary and Future Works --- p.68Chapter 5.1 --- Summary of the thesis --- p.69Chapter 5.2 --- Future works --- p.70LIST OF PUBLICATIONS --- p.71BIBLIOGRAPHY --- p.7