期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 40, 期 12, 页码 3968-3973出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2022.3151807
关键词
Optical switches; Optical fibers; Optical refraction; Optical variables control; Optical pulses; Optical films; Optical reflection; Optical fiber devices; optical switches; phase change materials
资金
- National Key Research and Development Program of China [2018YFC1503703]
- National Natural Science Foundation of China [61775047, 61975039]
- Natural Science Foundation of Heilongjiang Province of China [YQ2020F011]
- 111 Project [B13015]
- Fundamental Research Funds forHarbin Engineering University of China
In this study, an all-optical controllable switch device with non-volatile, broadband adjustable, and bistable fast switching performance was proposed and demonstrated by integrating the phase-change material onto the optical fiber. This device is expected to enable fast and broadband optical routing and provide new storage and computing functionalities to optical fibers in the future.
The silicon photonic integrated network based on the thermo-optical or electro-optical effect generally has the disadvantages of volatile, large footprint, and significant energy loss. Here, we propose and demonstrate an all-optical controllable switch device with non-volatile, broadband adjustable, and bistable fast switching performance by integrating the phase-change material (Ge2Sb2Te5) on the optical fiber. By adjusting the energy of the laser pulse train exerting on the optical fiber, the phase state of the phase-change material can be switched, thereby realizing the ON and OFF function of the optical switch. As a result, a non-volatile optical switch with a wide bandwidth working range (up to 60 nm) and a significant transmission contrast (2 dB) is demonstrated. This device is expected to help realize fast and broadband optical routing in fiber optical communication networks as the optical switch. Furthermore, its logic operation function can impart optical fiber with new storage and computing functionalities except for transmission and sensing. It can be combined with an optical field-programmable gate array (OFPGA) and play a part in optical fiber photonic circuitry in the future.
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