Ring‐modulator‐based RoF system with local SSB modulation and remote carrier reuse

A full-duplex radio-over-fibre (RoF) system based on an integrated silicon ring modulator is proposed and demonstrated. For the downstream link, a coherent dual-wavelength laser source is coupled to a silicon ring modulator in the central office (CO). Since only one of the optical carriers in the dual-wavelength laser source is aligned to the resonance of the ring modulator, a single sideband (SSB) modulated optical downstream signal is obtained, which is able to combat the power fading introduced by the fibre dispersion. Besides, for the upstream link, the unmodulated optical carrier in the SSB-modulated optical downstream signal is reused by using an optical filter in the remote radio head. After being modulated by the upstream data, the optical upstream signal is transmitted back to the CO. A proof-of-concept experiment is carried out. Error vector magnitudes of 21-GHz downstream and 10-GHz upstream signals are measured, which confirms that the proposed architecture is a promising low-cost solution for future high-speed wireless communication systems.

[1]  Z. Tang,et al.  A Full-Duplex Radio-Over-Fiber Link Based on a Dual-Polarization Mach–Zehnder Modulator , 2016, IEEE Photonics Technology Letters.

[2]  G. Carpintero,et al.  Foundry-Fabricated Heterodyne DFB Laser Microchip for 600 MHz – 23 GHz RF Generation , 2018, 2018 48th European Microwave Conference (EuMC).

[3]  A. Abbasi,et al.  III-V-on-Silicon Photonic Transceivers for Radio-Over-Fiber Links , 2018, Journal of Lightwave Technology.

[4]  M. P. Thakur,et al.  Simple 60-GHz MB-OFDM Ultrawideband RoF System Based on Remote Heterodyning , 2013, IEEE Photonics Technology Letters.

[5]  Shilong Pan,et al.  A Q-band radio-over-fiber system for distribution of uncompressed high-definition video signals , 2015, 2015 Asia-Pacific Microwave Conference (APMC).

[6]  Wayne V. Sorin,et al.  Elimination of the fibre chromatic dispersion penalty on 1550 nm millimetre-wave optical transmission , 1997 .

[7]  Yonggang Wen,et al.  Cloud radio access network (C-RAN): a primer , 2015, IEEE Network.

[8]  S. Faralli,et al.  Large-FSR Thermally Tunable Double-Ring Filters for WDM Applications in Silicon Photonics , 2017, IEEE Photonics Journal.

[9]  Ming Tang,et al.  Toward Terabit Digital Radio over Fiber Systems: Architecture and Key Technologies , 2019, IEEE Communications Magazine.

[10]  J. Verbist,et al.  Silicon Photonics Radio-Over-Fiber Transmitter Using GeSi EAMs for Frequency Up-Conversion , 2019, IEEE Photonics Technology Letters.

[11]  Colm Browning,et al.  60 GHz 5G Radio-Over-Fiber Using UF-OFDM With Optical Heterodyning , 2017, IEEE Photonics Technology Letters.

[12]  Chi-Wai Chow,et al.  Integrated Silicon Photonics Remote Radio Frontend (RRF) for Single-Sideband (SSB) Millimeter-Wave Radio-Over-Fiber (ROF) Systems , 2019, IEEE Photonics Journal.

[13]  B. Cabon,et al.  Convergence of 60 GHz Radio Over Fiber and WDM-PON Using Parallel Phase Modulation With a Single Mach–Zehnder Modulator , 2012, Journal of Lightwave Technology.

[14]  S. Pan,et al.  Flat-top optical resonance in a single-ring resonator based on manipulation of fast- and slow-light effects. , 2018, Optics express.

[15]  Jianping Yao,et al.  Photonic generation of microwave signal using a dual-wavelength single-longitudinal-mode fiber ring laser , 2006 .

[16]  Catherine Algani,et al.  Use of SiGe Photo-Transistor in RoF links based on VCSEL and standard single mode fiber for low cost LTE applications , 2018, 2018 International Topical Meeting on Microwave Photonics (MWP).

[17]  G. H. Smith,et al.  TECHNIQUE FOR OPTICAL SSB GENERATION TO OVERCOME DISPERSION PENALTIES IN FIBRE-RADIO SYSTEMS , 1997 .

[18]  A. Abbasi,et al.  Analog Radio-Over-Fiber Transceivers Based on III–V-on-Silicon Photonics , 2018, IEEE Photonics Technology Letters.

[19]  Xiqi Gao,et al.  Cellular architecture and key technologies for 5G wireless communication networks , 2014, IEEE Communications Magazine.

[20]  Shilong Pan,et al.  60-GHz RoF System for Dispersion-Free Transmission of HD and Multi-Band 16QAM , 2018, IEEE Photonics Technology Letters.