Hybrid distributed Raman amplification combining random fiber laser based 2nd-order and low-noise LD based 1st-order pumping | Zendy

Xin-Hong Jia | Zendy; Yunjiang Rao | Zendy; Cheng-Xu Yuan | Zendy; Jin Li | Zendy; Xiaodong Yan | Zendy; Zinan Wang | Zendy; Weili Zhang | Zendy; Han Wu | Zendy; Yeyu Zhu | Zendy; Fei Peng | Zendy

Open Access

Hybrid distributed Raman amplification combining random fiber laser based 2nd-order and low-noise LD based 1st-order pumping

Author(s) -

Xin-Hong Jia,

Yunjiang Rao,

Cheng-Xu Yuan,

Jin Li,

Xiaodong Yan,

Zinan Wang,

Weili Zhang,

Han Wu,

Yeyu Zhu,

Fei Peng

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.024611

Subject(s) - raman amplification , relative intensity noise , optics , noise (video) , amplified spontaneous emission , materials science , repeater (horology) , fiber laser , optical fiber , laser , semiconductor laser theory , physics , optical amplifier , computer science , artificial intelligence , coupling (piping) , metallurgy , image (mathematics)

A configuration of hybrid distributed Raman amplification (H-DRA), that is formed by incorporating a random fiber laser (RFL) based 2nd-order pump and a low-noise laser-diode (LD) based 1st-order pump, is proposed in this paper. In comparison to conventional bi-directional 1st-order DRA, the effective noise figure (ENF) is found to be lower by amount of 0 to 4 dB due to the RFL-based 2nd-order pump, depending on the on-off gain, while the low-noise 1st-order Raman pump is used for compensating the worsened signal-to-noise ratio (SNR) in the vicinity towards the far end of the fiber and avoiding the potential nonlinear impact induced by excess injection of pump power and suppressing the pump-signal relative intensity noise (RIN) transfer. As a result, the gain distribution can be optimized along ultra-long fiber link, due to combination of the 2nd-order RFL and low-noise 1st-order pumping, making the transmission distance be extended significantly. We utilized such a configuration to achieve ultra-long-distance distributed sensing based on Brillouin optical time-domain analysis (BOTDA). A repeater-less sensing distance record of up to 154.4 km with 5 m spatial resolution and ~ ± 1.4 °C temperature uncertainty is successfully demonstrated.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research