Photonic microwave-signal-mixing technique using phase-coherent orthogonal optical carriers for radio-over-fiber application

Zheng, Jianyu; Wang, Jing; Yu, Jian; Zhu, Meifang; Dong, Ze; Wang, Xin; Su, Ting; Liu, Jianguo; Zhu, Na; Chang, Gee‐Kung

doi:10.1364/ol.39.005263

Cited by 26 publications

(7 citation statements)

References 11 publications

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“…The use of microwave photonic filters [13]- [18], including stimulated Brillouin scattering based [13] and comb filter based [14] techniques for generating fast-switching frequency hopping signal can achieve hopping speed of hundreds of picoseconds. On the other hand, photonic-assisted microwave signal mixing for amplitude and phase-switching signal generation can be implemented via stimulated Brillouin scattering (SBS)based carrier suppression [19], the use of phase coherent orthogonal carrier [20], polarization rotation in semiconductor optical amplifier [21], and the use of Sagnac loop based modulator [22]. However, most existing microwave photonic approaches require the use of optical filters, electrical phase shifters, which essentially limits both the lower and upper operation signal frequencies.…”

Section: Introductionmentioning

confidence: 99%

Real-Time RF Multi-Dimensional Signal Switching Using Polarization-Dependent Optical Mixing

Liu

Fok

2020

IEEE Photonics J.

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Real-time switching of RF signal properties, including phase, frequency, and amplitude, is essential for emerging high-speed RF systems to improve security, signal fidelity, and enhance data capacity. While it is easy to switch the amplitude of an RF signal at GHz speed, unfortunately, it is extremely challenging to perform phase or frequency switching of an RF signal with a fast switching time in the picosecond range. In this paper, a real-time RF signal switching technique is proposed and demonstrated based on polarization dependent four-wave mixing in a highly-nonlinear optical fiber. Due to the amplitude, phase, and frequency transparent property of four-wave mixing, the proposed scheme is capable of manipulating multidimensional RF signal of over tens of GHz frequency, and achieve frequency hopping and phase switching of a GHz RF signal. The switching time is not limited by the proposed temporal switching technique; instead, it is solely depending on the rise/fall time of the control signal itself. Furthermore, the generation of frequency hopping signal with a switching time of 50 ps, as well as simultaneously frequency and phase switching of a GHz RF signal have been experimentally demonstrated based on the proposed RF signal switching scheme.

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Section: Introductionmentioning

confidence: 99%

Real-Time RF Multi-Dimensional Signal Switching Using Polarization-Dependent Optical Mixing

Liu

Fok

2020

IEEE Photonics J.

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“…Moreover, the polarisation domain has been investigated substantially for fibre-FSO integration. The use of PDM operation is a prominent one to double the channel capacity 17–20 . To inherit the advantages of above-mentioned VSB-PAM4 modulation and PDM operation, the channel capacity of the VSB-PAM4 fibre-FSO integration can be enhanced up to four times.…”

Section: Introductionmentioning

confidence: 99%

A PDM-based bi-directional fibre-FSO integration with two RSOAs scheme

Tsai

Huang

et al. 2019

Sci Rep

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A polarization-division-multiplexing (PDM)-based bi-directional fibre-free-space optical (FSO) integration with two reflective semiconductor optical amplifiers (RSOAs) scheme to efficiently wipe off the modulated data for upstream modulation is proposed and successfully demonstrated. For downstream modulation, a high-speed 128 Gb/s vestigial sideband (VSB)-four-level pulse amplitude modulation (PAM4) fibre-FSO integration is feasibly established. The transmission capacity is increased up to four times through PDM operation and VSB-PAM4 modulation. For uplink transmission, a 10 Gb/s non-return-to-zero fibre-FSO integration with two RSOAs scheme to effectually erase the downstream modulated data is practically constructed. The upstream performance exhibits noticeable enhancement by using of two RSOAs scheme to wipe off the modulated data clearly. Such illustrated PDM-based bi-directional 128 Gb/s (downstream)/10 Gb/s (upstream) fibre-FSO integration is shown to be prominent not only due to its enhancement in the convergence of fibre backhaul and optical wireless reach extender but also because of its benefit in bi-directional transmission for affording high transmission capacity with long-reach optical wireless link and improved upstream performance.

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“…The bit-error ratio for 10-Gbaud 7-PSK vector signals can be under hard-decision forward-error-correction threshold of 3.8 × 10 −3 after 10 km standard single-mode fiber transmission. © 2016 Optical Society of America Radio-over-fiber (RoF) technology has attracted ever-increasing interest for its potential use in future broadband wireless communications and future network services like 5G [1][2][3][4][5][6][7][8]. It offers the advantages of high bandwidth, high mobility, and low propagation loss.…”

mentioning

confidence: 99%

Photonic RF vector signal generation with enhanced spectral efficiency using precoded double single-sideband modulation

et al. 2016

Self Cite

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In this study, a novel photonic vector signal at frequency (RF) bands generation scheme based on the beating of double single sidebands (SSBs) is proposed and experimentally demonstrated. The double SSBs carry separate constant- or multi-amplitude quadrature-amplitude-modulation vector signals are generated from a single I/Q modulator. By adopting phase and amplitude precoding, different constellations can be generated, such as 3-ary phase-shift keying (PSK), 4-PSK, 7-PSK, 8-PSK, and so on. In this work, 10-Gbaud 7-PSK vector signal generation at 20 GHz enabled by two precoded 4-PSK SSB signals via a single I/Q modulator is theoretically and experimentally investigated. Compared to a single-drive Mach-Zehnder modulator or conventional I/Q modulator-based photonic vector signal generation scheme, the spectrum efficiency can be doubled. Differential coding is also implemented at the transmitter side for accurate demodulation of 7-PSK into two 4-PSK signals. The bit-error ratio for 10-Gbaud 7-PSK vector signals can be under hard-decision forward-error-correction threshold of 3.8×10^-3 after 10 km standard single-mode fiber transmission.

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Photonic microwave-signal-mixing technique using phase-coherent orthogonal optical carriers for radio-over-fiber application

Cited by 26 publications

References 11 publications

Real-Time RF Multi-Dimensional Signal Switching Using Polarization-Dependent Optical Mixing

Real-Time RF Multi-Dimensional Signal Switching Using Polarization-Dependent Optical Mixing

A PDM-based bi-directional fibre-FSO integration with two RSOAs scheme

Photonic RF vector signal generation with enhanced spectral efficiency using precoded double single-sideband modulation

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