Influence of filtered ASE noise and optical filter shape on the performance of a WADM cascade

Roudas, I.; Antoniades, N.; Wagner, Richard E.; Habiby, Sarry F.; Stern, Thomas

doi:10.1049/cp:19971438

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…The evaluation of the equivalent transmittance is done analytically using the recursive relationship (8). The autocorrelation of the ASE noise is evaluated using the inverse fast Fourier transform (FFT) with 1024 points.…”

Section: Appendix C Implementation Of the Semi-analytic Methodsmentioning

confidence: 99%

“…In (6), is calculated through the relationship (8) where is an auxiliary variable defined by the recursion (9) with initial condition . The subscript denotes the number of fiber spans.…”

Section: B Signal and Noise Representationmentioning

confidence: 99%

“…In the past, the cascadability of different types of optical MUXs/DMUXs was studied both theoretically [2]- [18] and experimentally [11], [18]- [24] for several bit rates, channel spacings, modulation formats, and other system considerations. Most attention was concentrated on arrayed waveguide grating (AWG) routers [6], [11], [13], [17], [19]- [22], [24], MUXs/DMUXs composed of multilayer interference (MI) filters [4], [5], [8], [10], [14], [17], [18], and MUXs/DMUXs composed of fiber Bragg grating filters [14], [15], [23]. General studies, not bound to a specific optical MUX/DMUX type, but based on arbitrary transfer functions, also exist, e.g., [7] and [16].…”

mentioning

confidence: 99%

“…References [2], [4], [5], [7], [9], [10], [12]- [14], [16], and [17] compute the eye pattern at the output of the direct-detection receiver by noiseless simulation and use the eye opening as a qualitative criterion of the network performance. Other authors [3], [6], [8], [11], [18] include ASE noise in their calculation with various degrees of accuracy, but assume Gaussian receiver noise statistics at the output of the direct-detection receiver. This assumption is strictly valid only for thermal-noise-limited receivers, but not for the most common case of optically preamplified direct-detection receivers.…”

mentioning

confidence: 99%

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Accurate modeling of optical multiplexer/demultiplexer concatenation in transparent multiwavelength optical networks

Roudas¹,

Antoniades²,

Otani³

et al. 2002

J. Lightwave Technol.

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This paper presents an accurate theoretical model for the study of concatenation of optical multiplexers/demultiplexers (MUXs/DMUXs) in transparent multiwavelength optical networks. The model is based on a semianalytical technique for the evaluation of the error probability of the network topology. The error-probability evaluation takes into account arbitrary pulse shapes, arbitrary optical MUX/DMUX, and electronic low-pass filter transfer functions, and non-Gaussian photocurrent statistics at the output of the direct-detection receiver. To illustrate the model, the cascadability of arrayed waveguide grating (AWG) routers in a transparent network element chain is studied. The performance of the actual network is compared to the performance of a reference network with ideal optical MUXs/DMUXs. The optical power penalty at an error probability of 10 9 is calculated as a function of the number of cascaded AWG routers, the bandwidth of AWG routers, and the laser carrier frequency offset from the channel's nominal frequency. Index Terms-Error analysis, optical filters, optical receivers. I. INTRODUCTION I N TRANSPARENT multiwavelength optical networks, each lightwave signal may be optically multiplexed/demultiplexed several times during propagation from its source to its destination [1]. Optical multiplexers/demultiplexers (MUXs/DMUXs) exhibit nonideal amplitude and phase transfer functions within the optical signal band. That is, their amplitude transfer functions might present passband curvature, tilt, and ripple. In addition, their phase transfer functions might not vary linearly with frequency. These impairments are enhanced when a large number of these devices are cascaded together. Consequently, optical MUX/DMUX concatenation

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Section: Appendix C Implementation Of the Semi-analytic Methodsmentioning

confidence: 99%

“…In (6), is calculated through the relationship (8) where is an auxiliary variable defined by the recursion (9) with initial condition . The subscript denotes the number of fiber spans.…”

Section: B Signal and Noise Representationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Accurate modeling of optical multiplexer/demultiplexer concatenation in transparent multiwavelength optical networks

Roudas¹,

Antoniades²,

Otani³

et al. 2002

J. Lightwave Technol.

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Cascadability of passband-flattened arrayed waveguide-grating filters in WDM optical networks

Otani

Antoniades

Roudas

et al. 1999

IEEE Photon. Technol. Lett.

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Proposal of scale-out control architecture of virtual wide area layer-2 switch on metro network

Date

Higuchi

Katayama

et al. 2013

2013 19th Asia-Pacific Conference on Communications (APCC)

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Power consumption of network equipment has been rapidly increasing, so it is therefore necessary to build a resource efficient network (NW). Router virtualization, which involves dynamically reallocating virtual routers to physical resources as a server virtualization, is becoming more common as a way to use network equipment effectively and robustly. Especially, edge router which is gateway of core network should be virtualized, because edge routers have many functions and resources just as servers do. A metro NW is wide area layer-2 aggregation NW that connects each user's residential gateway to edge routers. To achieve edge router virtualization, the metro NW must trace the dynamic edge router reallocation by changing a route of each Ethernet flow. Furthermore, access/metro NWs occupy a large proportion of the total NW power consumption, so logically centralized control architecture suits to the metro NW to change routes flexibly because it can use resources effectively by avoiding resource deployment in many locations. However, it is not scalable. When many Ethernet flows need to be accommodated in a metro NW, it can not change routes of the flows quickly enough. Therefore, we propose a virtual wide area layer-2 switch architecture with scale-out control that can improve the route control performance even in a worst case edge router node failure by processing in parallel flow-by-flow, by considering route information, and by rebalancing the load between parallel processes dynamically. We evaluated the proposed architecture through theoretical analysis and experiments with prototype. The results showed that the proposed architecture can increase the number of flows accommodated in a metro NW.

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Influence of filtered ASE noise and optical filter shape on the performance of a WADM cascade

Cited by 7 publications

References 2 publications

Accurate modeling of optical multiplexer/demultiplexer concatenation in transparent multiwavelength optical networks

Accurate modeling of optical multiplexer/demultiplexer concatenation in transparent multiwavelength optical networks

Cascadability of passband-flattened arrayed waveguide-grating filters in WDM optical networks

Proposal of scale-out control architecture of virtual wide area layer-2 switch on metro network

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