Stable RF transfer over a fiber-optic ring with DSBCS modulation and a DSB RF signal

Pingyang Shi; Guiling Wu; Liang Hu; Qi Li; Jianping Chen

doi:10.3788/COL202018.020603

Journals >Chinese Optics Letters >Volume 18 >Issue 2 >Page 020603 > Article

Chinese Optics Letters
Vol. 18, Issue 2, 020603 (2020)

Stable RF transfer over a fiber-optic ring with DSBCS modulation and a DSB RF signal

Pingyang Shi¹, Guiling Wu^1、2、*, Liang Hu¹, Qi Li¹, and Jianping Chen^1、2

Author Affiliations

¹Shanghai Institute for Advanced Communication and Data Science, State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

²Shanghai Key Laboratory of Navigation and Location-Based Services, Shanghai 200240, China

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DOI: 10.3788/COL202018.020603 Cite this Article Set citation alerts

Pingyang Shi, Guiling Wu, Liang Hu, Qi Li, Jianping Chen. Stable RF transfer over a fiber-optic ring with DSBCS modulation and a DSB RF signal[J]. Chinese Optics Letters, 2020, 18(2): 020603 Copy Citation Text

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Abstract

We propose a radio frequency (RF) transfer technique with passive phase noise compensation over a fiber-optic ring. By adopting different frequencies and same wavelength transmission and double sideband (DSB) with carrier suppression (DSBCS) modulation, the impact of backscattering can be effectively suppressed. A stable RF signal can be obtained via frequency mixing at an arbitrary access site along the fiber-optic ring. As the two directional transmissions adopt the same fiber and same wavelength from the same laser, the bidirectional propagation symmetry can be maximally guaranteed. We experimentally demonstrate 2 GHz RF signal transfer along a 100 km standard single-mode fiber-optic ring.

Keywords

DFSW method DSBCS modulation fiber loop link frequency transfer

E_{1} \propto \cos (2 ω_{s} t + 2 φ_{s}),

(1)

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E_{2} \propto \cos (ω_{s} t + φ_{s}) .

(2)

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E_{opt 1} \propto \exp (j ω_{c} t) [a_{1} + b_{1} \cos (ω_{s} t + φ_{s}) + c_{1} \cos (2 ω_{s} t + φ_{s}) + H H_{1}],

(3)

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E_{3} \propto \cos [ω_{s} (t - τ_{1}) + φ_{s}],

(4)

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E_{4} \propto \cos [(ω_{s} + ω_{0}) t - ω_{s} τ_{1} + (φ_{s} + φ_{0})] + \cos [(ω_{s} - ω_{0}) t - ω_{s} τ_{1} + (φ_{s} - φ_{0})] .

(5)

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E_{5} \propto \cos [(ω_{s} - ω_{0}) t + ω_{s} τ_{1} + (φ_{s} - φ_{0})] + \cos [(ω_{s} + ω_{0}) t + ω_{s} τ_{1} + (φ_{s} + φ_{0})] .

(6)

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E_{opt 2} \propto \exp (j ω_{c} t) {a_{2} \cos [(ω_{s} - ω_{0}) t + ω_{s} τ_{1} + (φ_{s} - φ_{0})] + a_{2} \cos [(ω_{s} + ω_{0}) t + ω_{s} τ_{1} + (φ_{s} + φ_{0})] + H H_{2}},

(7)

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E_{6} \propto \cos [2 ω_{s} (t - τ_{11}) + 2 φ_{s} + 2 ω_{s} τ_{1}], E_{7} \propto \cos [ω_{s} (t - τ_{12}) + φ_{s}],

(8)

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E_{8} \propto \cos [ω_{s} (t - τ_{11}) + φ_{s} + ω_{s} τ_{1}] .

(9)

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E_{9} \propto \cos [ω_{s} (2 t + τ_{1} - τ_{11} - τ_{12}) + 2 φ_{s}] .

(10)

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τ_{1} = τ_{11} + τ_{12} .

(11)

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E_{9} \propto \cos (2 ω_{s} t + 2 φ_{s}) .

(12)

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Pingyang Shi, Guiling Wu, Liang Hu, Qi Li, Jianping Chen. Stable RF transfer over a fiber-optic ring with DSBCS modulation and a DSB RF signal[J]. Chinese Optics Letters, 2020, 18(2): 020603

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