Point-by-point femtosecond laser micro-processing of independent core-specific fiber Bragg gratings in a multi-core fiber.
Point-by-point femtosecond laser micro-processing of independent core-specific fiber Bragg gratings in a multi-core fiber.
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DOI：
10.1364/oe.26.002039
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发表时间：
2018-01
期刊：
影响因子：
3.8
通讯作者：
A. Donko;M. Beresna;Yongmin Jung;John R. Hayes;David J. Richardson;Gilberto Brambilla
中科院分区：
文献类型：
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作者：
A. Donko;M. Beresna;Yongmin Jung;John R. Hayes;David J. Richardson;Gilberto Brambilla
采用逐点刻写技术将4个三阶光纤光栅刻写到7芯多芯光纤的各个纤芯上。使用1030 nm、206 ± 5 fs激光器，工作频率为1 kHz，脉冲能量为2.1 ± 0.2 µJ。记录到λB = 1541.01 ± 0.02、1547.82 ± 0.02、1532.66 ± 0.02和1537.42 ± 0.02 nm处的独立布拉格共振和13.97 ± 0.4、16.02 ± 0.4、10.08 ± 0.4和13.40 ± 0.4 dB的消光比。我们的数据分析表明，折射率的变化，Δn，的数量级10-3的诱导。光纤布拉格光栅在多芯光纤中的芯特定的铭文可以提供灵活和通用的平台，以满足最近的空分复用传输和光传感器网络的需求。
Four 3rd order fiber Bragg gratings were inscribed into separate cores of a 7 core multi-core fiber using the point-by-point inscription technique. A 1030 nm, 206 ± 5 fs laser was used, operating at a frequency of 1 kHz and pulse energy of 2.1 ± 0.2 µJ. Independent Bragg resonances at λB = 1541.01 ± 0.02, 1547.82 ± 0.02, 1532.66 ± 0.02, and 1537.42 ± 0.02 nm and extinction ratios of 13.97 ± 0.4, 16.02 ± 0.4, 10.08 ± 0.4 and 13.40 ± 0.4 dB were recorded. Our data analysis shows that refractive index changes, Δn, of the order 10-3 were induced. Core-specific inscription of fiber Bragg gratings in a multi-core fiber can provide a flexible and versatile platform to address the needs of recent space division multiplexed transmission and optical sensor networks.