Evaluating dispersion of optical fiber by analyzing the temporal mode property of Raman scattering

Nannan Liu; Zhenming Dou; Yuhong Liu; Jiamin Li; Xiaoying Li

doi:10.1117/12.2605406

9 September 2021 Evaluating dispersion of optical fiber by analyzing the temporal mode property of Raman scattering

Nannan Liu, Zhenming Dou, Yuhong Liu, Jiamin Li, Xiaoying Li

Proceedings Volume 11909, Tenth International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2021); 119090M (2021) https://doi.org/10.1117/12.2605406
Event: Tenth International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2021), 2021, Chengdu, China

Abstract

We theoretically and experimentally demonstrate the influence of dispersion on the temporal mode properties of the spontaneous Raman scattering pumped by picosecond pulses in single mode optical fiber. We model the process of the ultrafast spontaneous Raman scattering, calculate and measure the intensity correlation function of the Raman photons with different dispersion by varying the detuning between pump and Raman photons or changing the optical length. The intensity correlation function decreases with the increase of dispersion induced temporal walk-off both by increasing the detuning and by increasing the fiber length. We evaluate the dispersion parameter of the single mode fiber by fitting the measured data with the theoretical equation we deduced. The estimated value is close to the labelled one. Our study provides a new way to evaluate dispersion parameters of the media in which Raman scattering can occur and is beneficial for efficient distillation of entanglement in optical fibers.

Citation Download Citation

Nannan Liu, Zhenming Dou, Yuhong Liu, Jiamin Li, and Xiaoying Li "Evaluating dispersion of optical fiber by analyzing the temporal mode property of Raman scattering", Proc. SPIE 11909, Tenth International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2021), 119090M (9 September 2021); https://doi.org/10.1117/12.2605406

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