Design, fabrication, and characterization of a highly nonlinear few-mode fiber

Jitao Gao; Elham Nazemosadat; Chen Yang; Songnian Fu; Ming Tang; Weijun Tong; Joel Carpenter; Jochen Schröder; Magnus Karlsson; Peter A. Andrekson

doi:10.1364/PRJ.7.001354

Journals >Photonics Research >Volume 7 >Issue 11 >Page 1354 > Article

Photonics Research
Vol. 7, Issue 11, 1354 (2019)

Design, fabrication, and characterization of a highly nonlinear few-mode fiber

Jitao Gao^1、†, Elham Nazemosadat^2、†, Chen Yang³, Songnian Fu^1、*, Ming Tang¹, Weijun Tong³, Joel Carpenter⁴, Jochen Schröder², Magnus Karlsson², and Peter A. Andrekson²

Author Affiliations

¹Wuhan National Laboratory for Optoelectronics, and School of Optics and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

²Photonics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg 41296, Sweden

³State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fiber and Cable Joint Stock Limited Company (YOFC), Wuhan 430073, China

⁴School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia

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DOI: 10.1364/PRJ.7.001354 Cite this Article Set citation alerts

Jitao Gao, Elham Nazemosadat, Chen Yang, Songnian Fu, Ming Tang, Weijun Tong, Joel Carpenter, Jochen Schröder, Magnus Karlsson, Peter A. Andrekson. Design, fabrication, and characterization of a highly nonlinear few-mode fiber[J]. Photonics Research, 2019, 7(11): 1354 Copy Citation Text

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Abstract

We present the design, fabrication, and characterization of a highly nonlinear few-mode fiber (HNL-FMF) with an intermodal nonlinear coefficient of

2.8 {(W \cdot km)}^{1}

, which to the best of our knowledge is the highest reported to date. The graded-index circular core fiber supports two mode groups (MGs) with six eigenmodes and is highly doped with germanium. This breaks the mode degeneracy within the higher-order MG, leading to different group velocities among corresponding eigenmodes. Thus, the HNL-FMF can support multiple intermodal four-wave mixing processes between the two MGs at the same time. In a proof-of-concept experiment, we demonstrate simultaneous intermodal wavelength conversions among three eigenmodes of the HNL-FMF over the C band.