All‐optical wavelet‐based orthogonal frequency division multiplexing system based on silicon photonic integrated components

Ezra, Yosef Ben; Zadok, Avi; Califa, Ran; Munk, Dvir; Lembrikov, B. I.

doi:10.1049/iet-opt.2015.0064

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…There exist different types of a wavelet transform: CWT, discrete wavelet transform (DWT) [6,7,17], multi-wavelets [17,18], and complex wavelets [19]. We applied these types of wavelets to the problems related to the signal processing in optical communication systems [20][21][22][23]. We have found that CWT is the most appropriate for the analysis of superoscillations.…”

Section: The Fundamental Properties Of Cwt and Dwtmentioning

confidence: 99%

“…Wavelet transforms as a mathematical tool can be successfully used in the electromagnetic problems and signal processing applications [6,7,[17][18][19][20][21][22][23][24]. Wavelet based signal processing represents a useful technique for the compression of certain classes of data demonstrating isolated band-limited properties [17].…”

Section: The Applications Of Wavelet Transformsmentioning

confidence: 99%

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Applications of Wavelet Transforms to the Analysis of Superoscillations

Ezra¹,

Lembrikov²,

Schwartz³

et al. 2018

Wavelet Theory and Its Applications

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The phenomenon of superoscillation is the local oscillation of a band limited function at a frequency ω higher than the band limit. Superoscillations exist during the limited time intervals, and their amplitude is small compared to the signal components with the frequencies inside the bandwidth. For this reason, the wavelet transform is a useful mathematical tool for the quantitative description of the superoscillations. Continuoustime wavelet transform (CWT) of a transient signal ft ðÞis a function of two variables: one of them represents a time shift, and the other one is the scale or dilation variable. As a result, CWT permits the simultaneous analysis of the transient signals both in the time and frequency domain. We show that the superoscillations strongly localized in time and frequency domains can be identified by using CWT analysis. We use CWT with the Mexican hat and Morlet mother wavelets for the theoretical investigation of superoscillation spectral features and time dependence for the first time, to our best knowledge. The results clearly show that the high superoscillation frequencies, time duration, and energy contours can be found by using CWT of the superoscillating signals.

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Section: The Fundamental Properties Of Cwt and Dwtmentioning

confidence: 99%

Section: The Applications Of Wavelet Transformsmentioning

confidence: 99%

Applications of Wavelet Transforms to the Analysis of Superoscillations

Ezra¹,

Lembrikov²,

Schwartz³

et al. 2018

Wavelet Theory and Its Applications

Self Cite

View full text Add to dashboard Cite

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“…In order to also exploit super-wavelength granularity and meet the increased capacity and higher data rate demands of future 5G optical networks in a cost-effective manner, MCM superchannels can be generated in combination with direct-detection (DD). More complex optical implementations based on coherent (CO) detection can be also considered dealing with high data rate/reach targets [10]. On the other hand, programmable and adaptive sliceable bitrate variable transceivers (S-BVT), configured by following a software defined networking (SDN) paradigm, can be adopted as a key enabler of supperchannel generation, also providing flexibility in the transport infrastructure by enabling a dynamic resource sharing [11], [12].…”

Section: Introductionmentioning

confidence: 99%

Programmable SDN-Enabled S-BVT Based on Hybrid Electro-Optical MCM

Nadal

Moreolo

Fàbrega

et al. 2018

J. Opt. Commun. Netw.

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A programmable SDN-enabled sliceable bitrate variable transceiver based on hybrid electrooptical multicarrier modulation as a key enabler for superchannel generation in future 5G metro networks is proposed. Multiple discrete multitone signals can be multiplexed/demultiplexed with optical orthogonal transform processors such as spectral selective switches (SSSs). By implementing optical spectrallyefficient transforms at the SSSs, we are able to generate a high capacity superchannel to support the transmission targets envisioned in 5G networks. Specifically, the optimal transform can be programmed by the control plane through the corresponding SDN agents by suitably configuring the phase and attenuation of the SSS's ports. Furthermore, with the adoption of MCM formats, increased system/network flexibility is achieved. In this work, two different transceiver configurations have been proposed and assessed. They are based on intensity modulation with direct detection and amplitude modulation with coherent reception. A flexible receiver configuration selection is envisioned according to the target network requirements/condition.

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All‐optical VPN platform for multisite VLC‐based networks

Salhi

Sliti

Boudriga

2018

Trans Emerging Tel Tech

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Optical networks and, in particular, visible light communication represent a very promising communication medium for future‐generation company networks. The establishment of virtual private networks (VPNs) in these specific distributed networks is a fundamental issue. In this paper, we present an all‐optical VPN platform based on visible light communication small cells on the access side and an optical fiber link on the backbone side. We exploited the security enhancement using the superposition of optical signals encoded using optical code‐division multiplexing codewords specific to each user. Two VPN modes are proposed: transport and tunnel. Even though the transport mode provides a much lower blocking rate as well as transmission performance (lower packet delay), the tunnel mode is advantageous from a security perspective due to the embedded optical code‐division multiple access encoding that it implements. Simulations are carried out for both modes to study the performance and security level provided by the proposed VPN architecture relatively to specific parameters (codeword size and number of simultaneous users).

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All‐optical wavelet‐based orthogonal frequency division multiplexing system based on silicon photonic integrated components

Cited by 5 publications

References 38 publications

Applications of Wavelet Transforms to the Analysis of Superoscillations

Applications of Wavelet Transforms to the Analysis of Superoscillations

Programmable SDN-Enabled S-BVT Based on Hybrid Electro-Optical MCM

All‐optical VPN platform for multisite VLC‐based networks

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