Numerical Demonstration of the Soliton Self-Frequency Shift Process Beyond 8 <italic>&#x03BC;</italic>m in a Tellurite-Chalcogenide Fiber Cascaded Structure

Yiwei Hou; Qi Wu; Fei Liu; Aoke Yan; Francois Ouellette; Jianfeng Li

doi:10.1109/JPHOT.2022.3187862

IEEE Photonics Journal (Jan 2022)

Numerical Demonstration of the Soliton Self-Frequency Shift Process Beyond 8 <italic>μ</italic>m in a Tellurite-Chalcogenide Fiber Cascaded Structure

Yiwei Hou,
Qi Wu,
Fei Liu,
Aoke Yan,
Francois Ouellette,
Jianfeng Li

Affiliations

Yiwei Hou: ORCiD; State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
Qi Wu: ORCiD; State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
Fei Liu: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
Aoke Yan: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
Francois Ouellette: College of Information Science and Engineering, Chengdu University, Chengdu, China
Jianfeng Li: ORCiD; State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China

DOI: https://doi.org/10.1109/JPHOT.2022.3187862
Journal volume & issue: Vol. 14, no. 4
pp. 1 – 12

Abstract

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We investigate theoretically the mid-infrared (MIR) Raman soliton self-frequency shift (SSFS) process in the TeO2-BaF2-Y2O3 (TBY) fiber and AsSe2-As2S5 fiber. The numerical analysis of the SSFS process in the TBY fiber is performed, revealing the impacts of the pumping wavelength and fiber core diameter on the SSFS effect. A new quantity measuring the frequency shift ability of a Raman shifter fiber is derived to interpret the complex relation between the frequency shift amount and the fiber parameter observed in simulations. Further, we propose some general ways to optimize the wavelength extension, conversion efficiency, pulse duration, and spectrum cleanliness for all Raman soliton lasers. For the first time, we propose the idea of coupling the tellurite fiber with chalcogenide fiber to further enhance the SSFS effect in MIR. With experimentally achievable high-power seed pulses at 1.9 μm and 2.8 μm, we demonstrated wavelength conversion from 1.9 to 7.5 μm and 2.8 to 8.1 μm through the SSFS process by cascading the TBY fiber with a AsSe2-As2S5 fiber in suitable coupling parameters. Our work could offer meaningful guidance to optimize the Raman soliton lasers and enlighten a feasible way to extend the SSFS process to a longer wavelength range.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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