Large-core plastic optical fibre based in-home optical networks

In this paper, we experimentally present a novel, all-optical spectral efficient vertical-cavity surface-emitting laser- (VCSEL-) based technique for routing and spectrum assignment in optical networks. Exploiting all optical VCSEL-to-VCSEL injection to attain cross gain modulation, the optical transmitter is optimized for optical transmission paths to assure quality of service by overcoming blockage for differentiated bandwidth demands during network congestion incidences. A 10 Gbps directly modulated 1549 nm master VCSEL is optically injected into the 1549 nm side modes of a 1550 nm slave VCSEL. The Shannon limit is considered for higher transmission rates with the problem decomposed into degraded routing and spectrum assignment and chromatic dispersion in the optical transmission link penalties. In this work, the proposed technique achieved a 1.3 dB penalty for transmission over a 25 km G.655 nonzero dispersion-shifted single-mode optical fibre, a value within the transmission media and optical system characteristics of 3 dB as recommended by the International Telecommunication Union-Telecommunication (ITU-T). The number of transceivers, switches, and optical transmission links in the network was reduced, increasing the number of satisfied bandwidth requests, thus optimizing the spectral resource utilization.

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Wavelength Division Multiplexing Technologies and their Applications

Handbook of Research on Heterogeneous Next Generation Networking ◽

10.4018/978-1-60566-108-7.ch004 ◽

2009 ◽

pp. 67-79

Author(s):

N. Merlemis ◽

D. Zevgolis

Keyword(s):

Optical Networks ◽

Optical Fibre ◽

Wavelength Division Multiplexing ◽

Laser Light ◽

Optical Carrier ◽

Optical Components ◽

Available Bandwidth ◽

Wavelength Division ◽

Dense Wdm

This chapter is an introduction of the Wavelength-division multiplexing (WDM) technologies (such as Dense WDM and coarse WDM) and their recent applications in optical networks. WDM is used to multiplex multiple optical carrier signals on a single optical fibre by using different wavelengths of laser light to carry different signals. This allows for a multiplication in available bandwidth and, in addition, makes possible to perform bidirectional communications over one strand of fibre. We present the optical components used in WDM and review some of the most important applications of the technology.

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Reproducible coating and testing techniques for large core luminescent clad optical fibre probes for UV detection

Sensors and Actuators A Physical ◽

10.1016/s0924-4247(04)00515-1 ◽

2005 ◽

Vol 118 (1) ◽

pp. 57-62 ◽

Cited By ~ 1

Author(s):

C FITZPATRICK ◽

J WALSH ◽

P QUINN ◽

I GROUT ◽

E LEWIS

Keyword(s):

Optical Fibre ◽

Uv Detection ◽

Large Core ◽

Testing Techniques

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A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks

Electronics ◽

10.3390/electronics9122014 ◽

2020 ◽

Vol 9 (12) ◽

pp. 2014

Author(s):

M. A. Elmagzoub ◽

Asadullah Shaikh ◽

Abdullah Alghamdi ◽

Khairan Rajab

Keyword(s):

Wireless Networks ◽

Optical Networks ◽

Optical Fibre ◽

Mobile Networks ◽

Access Network ◽

Future Research ◽

Broadband Networks ◽

Next Generation ◽

High Data ◽

Data Rates

Next-generation access/mobile networks have set high standards in terms of providing wireless services at high data rates in order to keep up with the vast demands for other mobility and multiple services. Wireless-optical broadband access network (WOBAN) technology, also known as fibre-wireless (FiWi), has uncovered incredible opportunities for the future of next-generation networks because it gets the best of both domains: huge bandwidth provided by the optical fibre and high ubiquity of the wireless domain. The objective of FiWi networks is to integrate the high data rate and long reach provided by optical networks and the ubiquity and mobility of wireless networks, with the target to decrease their expense and complexity. Multiple-input–multiple-output (MIMO) is an inevitable technique for most of the new mobile/wireless networks that are driven by the huge data rates required by today’s users. Consequently, to construct any FiWi system for next-generation (NG) access/broadband networks, an MIMO technique has to be considered. This article presents a comprehensive, contemporary review of the latest subsystems, architectures and integrated technologies of MIMO wireless signals backhauling using optical fibre or fibre access networks, such as passive optical networks (PONs). An overview for FiWi, PONs and MIMO wireless systems is provided. In addition, advanced techniques of accommodating the MIMO wireless signals over optical fibre are explained and compared. Different types of wireless MIMO signals over fibre, such as 5G, WiFi and related transport technologies, are reviewed. Moreover, future research trends are also discussed.

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A large core polymer optical fibre sensor for x-ray dosimetry based on luminescence occurring in the cladding

Measurement Science and Technology ◽

10.1088/0957-0233/15/8/027 ◽

2004 ◽

Vol 15 (8) ◽

pp. 1586-1590 ◽

Cited By ~ 10

Author(s):

C Fitzpatrick ◽

C O'Donoghue ◽

J Schöbel ◽

B Bastiaens ◽

P van der Slot ◽

...

Keyword(s):

Optical Fibre ◽

Large Core ◽

X Ray ◽

Optical Fibre Sensor ◽

Fibre Sensor ◽

Core Polymer

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WDM techniques in broadband optical networks

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences ◽

10.1098/rsta.1989.0062 ◽

1989 ◽

Vol 329 (1603) ◽

pp. 105-118 ◽

Cited By ~ 2

Keyword(s):

Optical Networks ◽

Optical Fibre ◽

Wavelength Division Multiplexing ◽

Network Architecture ◽

Access Network ◽

Wavelength Division ◽

Fibre Technology ◽

Low Bit Rate ◽

Access Structures ◽

Local Access

The penetration of optical-fibre technology into the local-access network may well occur by the economic provision of well-established services, such as basic telephony, over a shared-access optical architecture. The provision of new broadband services needs to be done without disruption to these basic (telephony) services. Wavelength-division multiplexing techniques allow the possibility of broadband upgrade on a shared-access network architecture without disturbing existing services. The nature of shared-access structures, although providing opportunities for the early economic provision of basic low-bit-rate services, gives rise to major implications for the requirements of the WDM technology used for upgrading to broadband operation. In this paper example network structures are examined in terms of possible upgrade strategies and the associated technological implications.

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