Bidirectional Radio-Over-Fiber Systems Using Double-Clad Fibers for Optically Powered Remote Antenna Units

Matsuura, Motoharu; Sato, Jun

doi:10.1109/jphot.2014.2381669

Cited by 65 publications

(30 citation statements)

References 19 publications

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“…Even keeping the current design with 3 RRUs per BS a total power of around 1W will be required. Power over fiber (PoF) technologies providing an electrical power of 0.5 W at 100 m using a double-clad fiber with a multimode inner cladding and power delivery efficiency of 15% for optically powered RAUs are reported in [16]. The latter can operate without external electrical power supply so they can be easily installed at any location.…”

Section: Power Over Fiber Integrationmentioning

confidence: 99%

Multimode fibers in millimeter-wave evolution for 5G cellular networks

et al. 2016

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, et al. "Multimode fibers in millimeter-wave evolution for 5G cellular networks", Proc. SPIE 9772, Broadband Access Communication Technologies X, 97720F (February 12, 2016 ABSTRACTSmall-cell and cloud-RAN systems along with the use of the millimeter-wave band have been considered as promising solutions to meet the capacity demand of the future wireless access networks. Radio over Multimode fibers (RoMMF) can play a role in the integrated optical-wireless access systems for next-generation wireless communications, mainly in within-building environments. The numerical results show the effectiveness of MMF to transmit at 60 GHz band with 7-GHz bandwidth for different link lengths and refractive index profiles under restricted mode launching and using narrow linewidth sources. The integration with optically powered remote antenna units is also proposed based on the large core effective area of MMF. Temperature impairments and graded index plastic optical fiber transmission are also discussed.

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Section: Power Over Fiber Integrationmentioning

confidence: 99%

Multimode fibers in millimeter-wave evolution for 5G cellular networks

et al. 2016

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“…Hence the Power-over-Fiber technology has applications in domains such as high voltage power line monitoring [7,8] thanks to its galvanic isolation. It can also be found in sensing systems for Internet of Things (IoT) [9] or even in high capacity Radio-over-Fiber transmission systems [10,11,12], where a composite optical/electrical cable can be replaced by an all in one optical fiber for powering up an RF antennas system.…”

Section: Introduction and Context Of The Studymentioning

confidence: 99%

Design, Characterization, and Test of a Versatile Single-Mode Power-Over-Fiber and Communication System for Seafloor Observatories

Diouf

Quintard

Ghişa

et al. 2020

IEEE J. Oceanic Eng.

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A power-over-fiber (PoF) and communication system for extending a cabled seafloor observatory is demonstrated in this contribution. The system allows the cabled seafloor observatory to be linked, through a single optical fiber, to a sensor node located 8 km away. The PoF system is based on an optical architecture in which power and data propagate simultaneously on the same single-mode fiber. The Raman scattering effect is exploited to amplify the optical data signals and leads to the minimization of the sensor node power consumption. Versatile low power electronic interfaces have been developed to ensure compatibility with a wide range of marine sensors. A low-consumption fieldprogrammable gate array and an energy-efficient microcontroller are used to develop the electronic interfaces. For an electrical input power of 31 W, up to 190 mW is recovered at the sensor node while a data bitrate of up to 3.6 Mb/s is achieved. The PoF system has been tested and validated for turbidity and acoustic measurement applications. The current study focuses on the electronic development and the validation of the PoF system.

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“…At first, separate optical fibers were used for transmission of the optical power and the RF signal [12]- [14]. Later on, the optical power and the RF signal were carried simultaneously by a single optical fiber, by applying wavelength division multiplexing (WDM) [15], [16], or by using double-clad fibers (DCFs) [17]- [19], consisting of a single-mode core and a multi-mode inner cladding. By contrast, in this paper, full energy-autonomy is achieved in a DL-RAU by omitting all active components and maximizing power transfer from photodetector to antenna by means of a passive impedance matching network, in the meantime enhancing cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Passive Opto-Antenna as Downlink Remote Antenna Unit for Radio Frequency Over Fiber

Caytan

Bogaert

et al. 2018

J. Lightwave Technol.

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Abstract-A novel remote antenna unit, intended for application in the downlink of an analog radio frequency over fiber system, is proposed, whose radiated power originates entirely from the optical signal supplied by a single multi-mode fiber. By operating the photodetector of the optical receiver at zero bias voltage, while omitting typical active components, such as transimpedance amplifiers, a fully passive unit, requiring no external power supply, is obtained. Instead, a careful co-design is performed to maximize the power transfer from photodetector to antenna within the frequency range of interest using an impedance matching network. A wideband cavity-backed slot antenna is implemented in air-filled substrate-integrated-waveguide technology. The antenna feed plane serves as integration platform for the optical receiver. The resulting downlink remote antenna unit is compact, cost-effective, energy-efficient and extremely reliable. Therefore, it is an ideal building block for novel, highly specialized, ultra-high density wireless communication systems, which require massive amounts of remote antenna units, deployed in attocells as small as 15 cm ×15 cm. A prototype operating in a wide frequency bandwidth ranging from 3.30 GHz to 3.70 GHz is constructed and validated. In free-space conditions, a broadside gain of −0.2 dBi, a front-to-back ratio of 8.8 dB and linear polarization with a cross-polarization level of −28.8 dB are measured at 3.50 GHz. Furthermore, a −3 dB gain bandwidth of 500 MHz is observed. Finally, the prototype is deployed in a unidirectional data link, achieving a symbol rate of 80 MBd over a distance of 20 cm.

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Bidirectional Radio-Over-Fiber Systems Using Double-Clad Fibers for Optically Powered Remote Antenna Units

Cited by 65 publications

References 19 publications

Multimode fibers in millimeter-wave evolution for 5G cellular networks

Multimode fibers in millimeter-wave evolution for 5G cellular networks

Design, Characterization, and Test of a Versatile Single-Mode Power-Over-Fiber and Communication System for Seafloor Observatories

Passive Opto-Antenna as Downlink Remote Antenna Unit for Radio Frequency Over Fiber

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