Hybrid transmission of unicast and broadcast signals without optical filter for WDM systems

Shiu, Run‐Kai; Fang, Meng-Hsin; Peng, Peng‐Chun; Manie, Yibeltal Chanie; Tang, W. C.; Lai, Chung-Hong

doi:10.1016/j.yofte.2018.12.009

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…The photonic generation of mm-wave signals is one of the basic mechanisms in RoF systems. Nowadays, there are many proposed approaches for the photonic generation of mm-wave signals, among them are direct intensity modulation [3], optical external modulation [4], [5] optical heterodyne [6], and optical mode-locked of the two laser diodes [7]. Optical external modulation has many advantages such as good stability, wide tunability range, and high conversion efficiency; therefore, it is considered the most significant one among the above approaches.…”

Section: Introductionmentioning

confidence: 99%

Design of a RoF fronthaul link based on optical generation of mm-waves for 5G C-RANs

Keti

Atroshey

Hamadamin

2023

IJEECS

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In this paper, a cloud-radio access networks based (C-RANs) radio-over-fiber (RoF) system have been reported with the optical generation of 28 GHz and 57 GHz millimeter-wave using phase modulation and stimulated Brillouin scattering effect in optical fibers. As a result, a cost-effective system with improved performance is achieved by the proposed method. Based on the proposed scheme, a 28 GHz (licensed band) and 57 GHz (Un-licensed band) optical millimeter-waves are generated by simulation only using 14 GHz and 16 GHz radio frequency (RF) respectively. Because the performance of any optical transmission system is limited by the Q factor and the bit error rate (BER) and any input power of the laser into the fiber needs to be less than the Brillouin threshold in order to avoid the sharp degradation of the Q factor. Also, the Brillouin threshold for this study setup is determined which is around 6 dBm in the case of licensed band and 2 dBm in the case of unlicensed band. The simulation results show that the proposed scheme can provide 100 km single-mode fiber for 28 GHz and 25 km for 57 GHz with transmission rates of 10 Gbps for both of them. In addition, a stable millimeter-wave RoF link, high quality carriers, and a reduction in nonlinearity effects are achieved with the proposed scheme.

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Section: Introductionmentioning

confidence: 99%

Design of a RoF fronthaul link based on optical generation of mm-waves for 5G C-RANs

Keti

Atroshey

Hamadamin

2023

IJEECS

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“…Overall, FTTH systems provide different services with a really high speed estimated by multi Gigabit-per second over only one single bidirectional fiber, using the passive optical network -dense wavelength division multiplexing (PON-DWDM) technology according to the International Telecommunication Union (ITU) recommendations. This technology will ultimately add attractive features to FTTH networks such as broad bandwidth, high capacity, high flexibility, easy management, and lower costs [4,5].…”

Section: Introductionmentioning

confidence: 99%

Opto-Electronics Review

Hacene,

Karim

2020

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In this paper, a theoretical design of a novel passive optical line protection device for fiber to the home networks is presented and discussed. Such a device has been designed to overcome several issues of the conventional optical line protection which is based on a switching mechanism controlled electronically. The proposed design is suitable for multiplexed passive optical networks, especially, the dense wavelength division multiplexing technology. This unit is installed at both ends of the network and is composed of a 1×2 splitter to deliver the transmitted multiplexed signal to 2 optical paths and a 2×1 (99.9/0.1) coupler allowing an automatic control when a problem appears. Two optical line protection units exchange optical data through 2 dual fibers. In the case where the primary link suffers from a transmission problem, it automatically switches without any electronic control whatsoever to the backup link through a passive (99.9/0.1) coupler with an average total loss estimated to be of 3.2 dB.

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Study of the generation of two frequency 16-tupling millimeter wave and transmission over fiber by remodulation with Mach–Zehnder modulators

Chen,

Dai,

et al. 2024

Opt Quant Electron

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Hybrid transmission of unicast and broadcast signals without optical filter for WDM systems

Cited by 7 publications

References 20 publications

Design of a RoF fronthaul link based on optical generation of mm-waves for 5G C-RANs

Design of a RoF fronthaul link based on optical generation of mm-waves for 5G C-RANs

Opto-Electronics Review

Study of the generation of two frequency 16-tupling millimeter wave and transmission over fiber by remodulation with Mach–Zehnder modulators

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