Variable gain equalizer using magneto-optics

In this paper, we address the problem of providing survivability in elastic optical networks (EONs). EONs use fine granular frequency slots or flexible grids, when compared to the conventional fixed grid networks and therefore utilize the frequency spectrum efficiently. For providing survivability in EONs, we consider a recently proposed survivability method for conventional fixed grid networks, known as pre-configured backup protection with sharing (PBPS), because of its benefits over the traditional survivability approaches such as dedicated and shared protection. In PBPS, backup paths can be preconfigured and at the same time they can share resources. Therefore, both short recovery time and efficient resource usage can be achieved. We find that the existing switch architectures do not support both PBPS and EONs. Specifically, we identify and illustrate that, if a switch architecture is not carefully designed, several key problems/issues might arise in certain scenarios. Such problems include unnecessary resource consumption, inability of using existing free resources, and incapability of sharing backup paths. These problems appear when PBPS is adopted in EONs and they do not arise in fixed grid networks. In this paper, we propose new switch architectures which support both PBPS and EONs. Particularly, we illustrate that, our switch architectures avoid the specific problems/issues mentioned above. Therefore, our switch architectures support using resources more efficiently and reducing blocking of requests.

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“…We use the 1x2 VOS component presented in [15][16][17]. The self-latching VOS is based on magneto-optical technology.…”

Section: B Switch Architecture For Pbps In Eons Using Vossmentioning

confidence: 99%

Efficient switch architectures for pre-configured backup protection with sharing in elastic optical networks

Satkunarajah

Ratnam

Ragel

2014

7th International Conference on Information and Automation for Sustainability

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“…VOS is transmitted through two output fibres with a tuneable ratio respectively from 99% to 1% and from 1% to 99%. The component is activated by applying an electrical power and fabricated with a magneto-optical technology [Wada02]. The 1 × 2 FOS presents an optical loss of 3.3 dB whereas about 3.7 dB of losses are measured in the 1 × 2 VOS at a coupling ratio of 50-50%.…”

Section: Variable Splitter Variable Multiplexermentioning

confidence: 99%

Next-Generation FTTH Passive Optical Networks

Prat¹

2008

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“…4,5 In this paper, we propose a dynamic optical power splitter based on magneto-optical technology. 6,7 The main advantage of this technology is the absence of mechanical motion.…”

Section: Magneto-optical Variable Power Splittermentioning

confidence: 99%

Optical access network using a self-latching variable splitter remotely powered through an optical fiber link

et al. 2007

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We present a 1:2 variable optical splitter ͑VOS͒ with a selflatching property. This new generation of optical coupler presents two coupling ratio states ͑50%-50% and 100%-0%͒ and is based on magneto-optical technology. Fabricated VOS has an intrinsic loss of about 1 dB with a polarization-dependent loss ͑PDL͒ less than 0.1 dB. The flatness of the optical characteristics has also been measured in the C + L band at various temperatures. The active optical component needs an electrical pulse ͑with =1 ms͒ of around 2 V and 60 mA to be activated. Various passive optical network ͑PON͒ architectures using active 1:2 VOSs with self latching are investigated here. These components are cascaded to make a splitter with a tunable number of branches. The use of this splitter allows the achievement of adaptive, flexible, and scalable optical network architectures. The devices can be implemented in the central office ͑CO͒ or in the middle of the network. Last, we propose a remote powering and/or monitoring technology using a fiber-optic link in order to activate the dynamic optical power splitter. The key element of this technology is a pigtailed power converter module. The powering system avoids use of a local power supply via a power line and/or battery, maintains the passive and reliable properties of the network, and significantly limits its cost.

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Variable gain equalizer using magneto-optics

Cited by 12 publications

References 0 publications

Efficient switch architectures for pre-configured backup protection with sharing in elastic optical networks

Efficient switch architectures for pre-configured backup protection with sharing in elastic optical networks

Next-Generation FTTH Passive Optical Networks

Optical access network using a self-latching variable splitter remotely powered through an optical fiber link

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