Experimental validation of a 64-QAM LTE radio-over-fiber and free-space optics link at the 2000 nm band

Radio over fiber (RoF) transmission systems have been developing rapidly, especially for applications in 5G networks. In scenarios unsuitable for fiber-optics, radio over free-space optics (RoFSO) presents a suitable solution. Nevertheless, free-space optics (FSO) suffers from atmospheric conditions. The use of the 2000 nm band offers several advantages over the commonly used 1550 nm region. We focus on proof-of-concept evaluation of such a 2000 nm RoFSO transmission system. Measured characteristics are compared with a similar 1550 nm RoFSO system. We demonstrate both systems for QPSK and 64-QAM LTE formats, at 5 GHz and 10 GHz with a 20 MHz bandwidth.

[1]  Mayur Gondhalekar,et al.  Overview of LTE-A technology , 2013, 2013 IEEE Global High Tech Congress on Electronics.

[2]  Ziqi Jiang,et al.  2- $\mu$ m Free-Space Data Transmission Based on an Actively Mode-Locked Holmium-Doped Fiber Laser , 2020, IEEE Photonics Technology Letters.

[3]  B Corbett,et al.  Key enabling technologies for optical communications at 2000  nm. , 2018, Applied optics.

[4]  Katsutoshi Tsukamoto,et al.  RoFSO: A universal platform for convergence of fiber and free-space optical communication networks , 2009, 2009 ITU-T Kaleidoscope: Innovations for Digital Inclusions.

[5]  K. Williams,et al.  Microwave photonics , 2002 .

[6]  B Corbett,et al.  10 Gb/s InP-based Mach-Zehnder modulator for operation at 2 μm wavelengths. , 2015, Optics express.

[7]  Murat Uysal,et al.  Optical wireless communications — An emerging technology , 2016, 2014 16th International Conference on Transparent Optical Networks (ICTON).

[8]  L. Andrews,et al.  Laser Beam Propagation Through Random Media , 1998 .

[9]  Z Ghassemlooy,et al.  Experimental verification of long-term evolution radio transmissions over dual-polarization combined fiber and free-space optics optical infrastructures. , 2016, Applied optics.

[10]  Tetsuya Kawanishi,et al.  Radio-on-radio-over-fiber: efficient fronthauling for small cells and moving cells , 2015, IEEE Wireless Communications.

[11]  Takehiro Tsuritani,et al.  10 Pbit/s SDM/WDM Transmission , 2018, 2018 IEEE Photonics Conference (IPC).

[12]  Jong Hyun Lee,et al.  Demonstration of IFoF-Based Mobile Fronthaul in 5G Prototype With 28-GHz Millimeter wave , 2018, Journal of Lightwave Technology.

[13]  Zabih Ghassemlooy,et al.  24-26  GHz radio-over-fiber and free-space optics for fifth-generation systems. , 2018, Optics letters.

[14]  Katsutoshi Tsukamoto,et al.  Transmission analysis of digital TV signals over a Radio-on-FSO channel , 2011, IEEE Communications Magazine.

[15]  Boštjan Batagelj,et al.  5th-Generation Mobile Access Networks Assisted by Integrated Microwave Photonics , 2019, 2019 International Workshop on Fiber Optics in Access Networks (FOAN).