14 March 2024 Raman and erbium-doped fiber amplifiers hybrid bidirectional optical amplifier with low noise figure for fiber-optic radio frequency synchronization
Yongkang Hou, Shangsu Ding, Jianming Shang, Tianwei Jiang
Author Affiliations +
Abstract

We proposed a Raman and erbium-doped fiber amplifiers (EDFA) hybrid bidirectional optical amplifier (HBOA). The hybrid amplifier consists of a fiber Raman amplifier (FRA) and two EDFA, which are ingeniously combined by four WDMs. Gain and noise figure (NF) are the metrics used to evaluate the performance. The effects of Raman and EDFA pump on the gain and NF of the proposed hybrid amplifier are explored, resulting in a maximum gain exceeding 40 dB and an NF below 0 dB. Furthermore, when the input signal power is small (35 dBm), the proposed hybrid amplifier, exhibits a total gain increased of 14 dB, and NF reduction of 4 dB across the wavelength span of 1545 to 1565 nm, as compared with EDFA-only. Finally, The Allan deviation can reach 1.41×1014 when HBOA was used, significantly better than the stability of 2.62×1014 obtained by Bi-EDFA, which confirmed the feasibility of the proposed amplifier for radio frequency synchronization systems.

© 2024 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yongkang Hou, Shangsu Ding, Jianming Shang, and Tianwei Jiang "Raman and erbium-doped fiber amplifiers hybrid bidirectional optical amplifier with low noise figure for fiber-optic radio frequency synchronization," Optical Engineering 63(3), 035104 (14 March 2024). https://doi.org/10.1117/1.OE.63.3.035104
Received: 24 March 2023; Accepted: 1 March 2024; Published: 14 March 2024
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KEYWORDS
Optical amplifiers

Raman spectroscopy

Fiber amplifiers

Interference (communication)

Relays

Hybrid optics

Optical engineering

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