Quantum Dot Coherent Comb Laser Source for Converged Optical-Wireless Access Networks

Haipeng Zhang,Pedro Barrios,Mohamed Rahim,Luis Alberto Campos,Zhenguo Lu,Zhensheng Jia,Philip J Poole,Ping Zhao,Mu Xu,Chun-Ying Song

doi:10.1109/jphot.2021.3081060

Haipeng Zhang, Pedro Barrios + Show 8 more

Open Access

https://doi.org/10.1109/jphot.2021.3081060

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Abstract

We propose and experimentally demonstrate a converged optical-wireless WDM access network architecture enabled by a highly integrated quantum dot coherent comb laser. The converged optical-wireless WDM network features simultaneous delivery of coherent and millimeter wave (mmWave) / citizens broadband radio service (CBRS) signals over 50-km and 20 km fiber links, respectively.

Highlights

The everlasting growth in data intensive applications and services such as high-definition video-ondemand, cloud computing/storage, Internet of Things, and Big Data, has resulted in continuously increasing in the overall traffic volume in today’s communication networks over the last decade
In an RoF system, allocation and control of multiple wireless services takes place in the central office (CO), and ready-to-use analog signals can be delivered to remote access units (RAUs) or base stations (BSs) with identical protocols and interfaces, and greatly simplified the cell sites and reduced their cost [2]
On the user equipment (UE) side, the millimeter wave (mmWave) signal is received by another horn antenna around 2 m away and detected by an envelope detector (ED) that was connected to a vector signal analyzer (VSA)

Summary

Introduction

The everlasting growth in data intensive applications and services such as high-definition video-ondemand, cloud computing/storage, Internet of Things, and Big Data, has resulted in continuously increasing in the overall traffic volume in today’s communication networks over the last decade. To meet the ever-growing demands for future broadband services, the convergence of fiber-optic and wireless systems has gained widespread interest as one of the most promising solutions to increase the capacity and mobility of the communication systems as well as decreasing the deployment costs in nextgeneration access networks and mobile xHaul [1-3]. Combining the strength and benefits of high-speed fiber-optic and ubiquitous wireless access technologies, future converged optical-wireless access networks provide a promising solution to support high data-rate, high flexibility, and low latency services [3 - 5]. Different 5G xHaul solutions have been studied and among them, radio-over-fiber (RoF) technology, which is considered a low-cost and scalable solution, has gain popularity in multi-service broadband access networks [1, 2]. The 5G mmWave small cell system that features low attenuation and low cost can benefit the most from RoF architectures

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Conclusion