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Journal of Applied Sciences >

2023 , Vol. 41 >Issue 5: 727 - 737

DOI: https://doi.org/10.3969/j.issn.0255-8297.2023.05.001

Communication Engineering

Optical Fiber Memory Based on Phase Change Material Ge2Sb2Te5

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  • Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, Heilongjiang, China

Received date: 2023-02-15

  Online published: 2023-09-28

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Abstract

The typical functions of optical fiber are communication and sensing, this paper gives the function of optical fiber storage and designs an all-fiber memory to meet the needs of intelligent development of optical fiber communication systems. In this paper, single-mode fiber (SMF) and multimode fiber (MMF) are used to coaxial soldering, and Ge2Sb2Te5 (GST) material is deposited on the end face of MMF by the magnetron sputtering method, then the end face will emit the Bessel-like beam that can switch the phase state of GST, the length of MMF affects the end face light field, and finally 1.5 mm long MMF is selected to achieve non-volatile memory with arbitrary level access ability, high optical contrast, good stability, and high repeatability. The memory can realize 11 levels of storage randomly and stably, with an optical contrast of 50% and repeated cycles at least 34 times.

Key words： optical memory; optical fibers; phase change material; Bessel-like beams

Cite this article

YIN Jiayue, CHENG Siying, LOU Cunkai, YANG Bozhi, ZHANG Yu . Optical Fiber Memory Based on Phase Change Material Ge2Sb2Te5[J]. Journal of Applied Sciences, 2023 , 41(5) : 727 -737 . DOI: 10.3969/j.issn.0255-8297.2023.05.001

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