Design and analysis of redundant optical comb for data center networks

Atieh, Ahmad; Kanwal, Benish; Ghafoor, Salman; Sajid, Muhammad; Mirza, Jawad

doi:10.1007/s11082-022-04387-z

Cited by 3 publications

(3 citation statements)

References 28 publications

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“…According to (7), when the input signal is single frequency, it can be equivalent to a pulse function, so the output signal can be approximately characterized by the system transfer function, i.e., the BGS. Therefore, we obtain the PSF by a single-frequency input signal under different input signal powers.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

“…igh-resolution optical spectroscopy can obtain more details of signal spectrum, thus revealing more inherent changes of devices and systems. Therefore, it has a wide range of applications in signal characterization of optical communication systems [1]- [3], high accuracy optical sensing [4], laser sources characterization [5], [6], optical frequency combs and other device performance evaluation [7]- [9], etc. The traditional OSA resolution based on diffraction grating is ~ 20pm [10], which cannot meet above requirements.…”

Section: Introductionmentioning

confidence: 99%

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Deconvolutional Method Utilizing Power Variable Point Spread Function for Resolution Degradation Mitigation in SBS-Based Optical Spectrum Analyzer

Liang,

Zhang,

Wang

et al. 2024

IEEE Photonics J.

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High-resolution optical spectroscopy is a significant approach to reveal the inherent laws of devices and systems. Although optical spectrum analyzer (OSA) based on stimulated Brillouin scattering (SBS) has achieved a resolution of ~10pm, when the signal power increases, the Brillouin gain spectrum (BGS) will saturate and cause resolution degradation. In order to solve this problem, we introduce shape factor k to describe the variation of BGS with signal power, and adopt the BGS as the point spread function (PSF). Then the signal is divided into several intervals with equal frequency spacing, where the BGS does not change. On this basis, we perform the Jansson-Van Cittert (JVC) algorithm to complete deconvolution in each interval with power variable PSF. The proposed method is used to test the periodic signal in SBS-OSA. Experimental results show that the proposed method can improve the spectral resolution from 22MHz to 11MHz when the frequency interval is 14MHz and the signal power is -5dBm.

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Section: Experimental Setup and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deconvolutional Method Utilizing Power Variable Point Spread Function for Resolution Degradation Mitigation in SBS-Based Optical Spectrum Analyzer

Liang,

Zhang,

Wang

et al. 2024

IEEE Photonics J.

View full text Add to dashboard Cite

show abstract

“…This centralized approach often leads to bottlenecks and delays, particularly during peak traffic periods [ 36 ]. Additionally, packet contention can occur at network routers, where packets from multiple users or applications vie for transmission through shared network resources simultaneously [ 37 ]. Similarly, D2D communication can face packet contention issues, especially in environments with high device density.…”

Section: Research Backgroundmentioning

confidence: 99%

Understanding Mobile OTT Service Users’ Resistance to Participation in Wireless D2D Caching Networks

Jang,

Kim

2024

Behavioral Sciences

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With the explosive pace of mobile over-the-top (OTT) video content streaming services, mobile network traffic has seen unprecedented growth in recent years. However, the limitation of antenna performance, the burden of investment cost, and restricted resources hinder improving the current mobile networks’ functionality. Accordingly, wireless device-to-device (D2D) caching networks came to the fore as one of the competitive alternatives for alleviating the overloads of mobile network traffic. Wireless D2D caching networks can be a desirable alternative for OTT service providers and telecommunication operators, but the problem is user resistance. User participation is imperative to deliver wireless D2D caching network functionality successfully. Thus, to gain a deeper understanding of user resistance toward wireless D2D caching networks and their underlying sources, this study introduces two perceived cost factors contributing to this resistance and one perceived benefit that mitigates such resistance. Based on an online survey, this study found new theoretical links among perceived costs and benefits, resistance, and participation intention. The findings reveal that user resistance is predicted by perceived costs, encompassing resource sacrifices and privacy concerns, whereas perceived benefits—specifically, perceived usefulness—did not significantly influence resistance. This implies that telecommunication operators should prioritize market requirements over technological advantages, emphasizing the potential for successful commercialization of wireless D2D caching networks.

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Single-longitudinal mode quadruple wavelength C+L-band erbium-doped fiber laser based on the pairs of reflective fiber bragg gratings

Mirza,

Atieh,

Kanwal

et al. 2024

Phys. Scr.

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Flatness of lasing wavelengths of a multi-wavelength ﬁber laser (MWFL) is an important design constraint that is considered attractive in various applications of photonics and optical communication systems. In this work, we propose a single longitudinal mode (SLM) quadruple wavelength C+L-band Erbium-doped ﬁber laser (EDFL) with high output power ﬂatness. It is implemented with a short piece of Erbium-doped ﬁber (EDF) pumped by conventional 980 nm laser diode and four pairs of reﬂective ﬁber Bragg gratings (FBGs) through numerical simulations. The reﬂectivities of FBGs are adjusted such that SLM quadruple wavelengths are obtained at the output of EDFL with ﬂatness of 0.9 dB, optical signal-to-noise ratio (OSNR) of around 42 dB, and linewidths (LWs) in the range of 5.4-7.3 MHz. Slope efﬁciency (SE) of around 24% is achieved considering the total power of all lasing wavelengths generated. Moreover, the power variation around 0.1 dB for lasing wavelengths of 1540.2 nm and 1605.7 nm is noticed for twelve iterations each repeating after ﬁve-minute interval. The proposed SLM quadruple wavelength EDFL has promising application prospects for distributed sensing and optical communication systems due to excellent performance metrics.

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Design and analysis of redundant optical comb for data center networks

Cited by 3 publications

References 28 publications

Deconvolutional Method Utilizing Power Variable Point Spread Function for Resolution Degradation Mitigation in SBS-Based Optical Spectrum Analyzer

Deconvolutional Method Utilizing Power Variable Point Spread Function for Resolution Degradation Mitigation in SBS-Based Optical Spectrum Analyzer

Understanding Mobile OTT Service Users’ Resistance to Participation in Wireless D2D Caching Networks

Single-longitudinal mode quadruple wavelength C+L-band erbium-doped fiber laser based on the pairs of reflective fiber bragg gratings

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