Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection

This paper proposes a hybrid ring- and tree-topology radio over fiber (RoF) transmission system with self-disconnection protection that can support the high distribution density of base stations (BSs) in a metropolitan area and strengthen the network quality of service through self-disconnection pro...

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Autores principales:	Chung-Yi Li, Ching-Hung Chang, Zih-Guei Lin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	disconnection protection optical add/drop multiplexer radio over fiber wavelength division multiplexing Applied optics. Photonics TA1501-1820
Acceso en línea:	https://doaj.org/article/be40cf7925bf4e39a1d608efda512f49
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spelling	oai:doaj.org-article:be40cf7925bf4e39a1d608efda512f492021-11-25T18:43:44ZHybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection10.3390/photonics81105152304-6732https://doaj.org/article/be40cf7925bf4e39a1d608efda512f492021-11-01T00:00:00Zhttps://www.mdpi.com/2304-6732/8/11/515https://doaj.org/toc/2304-6732This paper proposes a hybrid ring- and tree-topology radio over fiber (RoF) transmission system with self-disconnection protection that can support the high distribution density of base stations (BSs) in a metropolitan area and strengthen the network quality of service through self-disconnection protection. The number of supportable BS in the system can be increased significantly by integrating the time- and wavelength-division multiplexing techniques and properly utilizing a new-generation single-line bidirectional add/drop multiplexer (SBOADM) into the proposed system. Moreover, when the ring–fiber link of the system is interrupted for any reason, the system operator can recover the broken connections quickly only by transforming an optical switch state at the CO end to allow the downlink optical signals to transmit along the clockwise and counterclockwise directions of the ring–fiber link simultaneously. In this case, the downstream optical signals can be delivered to each set of BS-groups through the two-way transmission characteristics of the SBOADM automatically, and the uplink optical signals, originally, from each set of BS-groups can be transmitted back to the CO end along the opposite direction of the downlink signal-routing path. In this way, the interference caused by fiber breakage can be avoided immediately, and the entire transport system can be reconnected to ensure the quality of network services. Our experimental results prove that the overall transmission performances are similar to those under normal circumstances.Chung-Yi LiChing-Hung ChangZih-Guei LinMDPI AGarticledisconnection protectionoptical add/drop multiplexerradio over fiberwavelength division multiplexingApplied optics. PhotonicsTA1501-1820ENPhotonics, Vol 8, Iss 515, p 515 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	disconnection protection optical add/drop multiplexer radio over fiber wavelength division multiplexing Applied optics. Photonics TA1501-1820
spellingShingle	disconnection protection optical add/drop multiplexer radio over fiber wavelength division multiplexing Applied optics. Photonics TA1501-1820 Chung-Yi Li Ching-Hung Chang Zih-Guei Lin Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection
description	This paper proposes a hybrid ring- and tree-topology radio over fiber (RoF) transmission system with self-disconnection protection that can support the high distribution density of base stations (BSs) in a metropolitan area and strengthen the network quality of service through self-disconnection protection. The number of supportable BS in the system can be increased significantly by integrating the time- and wavelength-division multiplexing techniques and properly utilizing a new-generation single-line bidirectional add/drop multiplexer (SBOADM) into the proposed system. Moreover, when the ring–fiber link of the system is interrupted for any reason, the system operator can recover the broken connections quickly only by transforming an optical switch state at the CO end to allow the downlink optical signals to transmit along the clockwise and counterclockwise directions of the ring–fiber link simultaneously. In this case, the downstream optical signals can be delivered to each set of BS-groups through the two-way transmission characteristics of the SBOADM automatically, and the uplink optical signals, originally, from each set of BS-groups can be transmitted back to the CO end along the opposite direction of the downlink signal-routing path. In this way, the interference caused by fiber breakage can be avoided immediately, and the entire transport system can be reconnected to ensure the quality of network services. Our experimental results prove that the overall transmission performances are similar to those under normal circumstances.
format	article
author	Chung-Yi Li Ching-Hung Chang Zih-Guei Lin
author_facet	Chung-Yi Li Ching-Hung Chang Zih-Guei Lin
author_sort	Chung-Yi Li
title	Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection
title_short	Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection
title_full	Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection
title_fullStr	Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection
title_full_unstemmed	Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection
title_sort	hybrid ring- and tree-topology rof transmission system with disconnection protection
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/be40cf7925bf4e39a1d608efda512f49
work_keys_str_mv	AT chungyili hybridringandtreetopologyroftransmissionsystemwithdisconnectionprotection AT chinghungchang hybridringandtreetopologyroftransmissionsystemwithdisconnectionprotection AT zihgueilin hybridringandtreetopologyroftransmissionsystemwithdisconnectionprotection
_version_	1718410797466517504

Hybrid Ring- and Tree-Topology RoF Transmission System with Disconnection Protection

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