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Electrically injected parity-time symmetric distributed feedback laser diodes (DFB) for telecom applications
Nanophotonics ( IF 7.5 ) Pub Date : 2021-01-01 , DOI: 10.1515/nanoph-2020-0587
Vincent Brac de la Perrière 1 , Quentin Gaimard 1 , Henri Benisty 2 , Abderrahim Ramdane 1 , Anatole Lupu 1
Affiliation  

The new paradigm of parity-time symmetry in quantum mechanics has readily been applied in the field of optics with numerous demonstrations of exotic properties in photonic systems. In this work, we report on the implementation of single frequency electrically injected distributed feedback (DFB) laser diodes based on parity-time symmetric dual gratings in a standard ridge waveguide configuration. We demonstrate enhanced modal discrimination for these devices as compared with index or gain coupled ones, fabricated in the same technology run. Optical transmission probing experiments further show asymmetric amplification in the light propagation confirming the parity-time symmetry signature of unidirectional light behavior. Another asset of these complex coupled devices is further highlighted in terms of robustness to optical feedback.

中文翻译:

用于电信应用的电注入奇偶时间对称分布反馈激光二极管(DFB)

量子力学中奇偶时间对称性的新范式已经在光学领域中得到了广泛应用,并在光子系统中展示了许多奇异性质。在这项工作中,我们报告了在标准脊形波导配置中基于奇偶校验时间对称双光栅的单频电注入分布式反馈(DFB)激光二极管的实现情况。与采用相同技术运行制造的索引或增益耦合器件相比,我们证明了这些器件的模态识别能力得到了增强。光学传输探测实验进一步表明,光传播过程中存在不对称放大现象,从而证实了单向光行为的奇偶时间对称特征。这些复杂耦合设备的另一项优势是在对光反馈的鲁棒性方面。
更新日期:2021-01-01
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