Electrically injected parity-time symmetric distributed feedback laser diodes (DFB) for telecom applications
نویسندگان
چکیده
Abstract The new paradigm of parity-time symmetry in quantum mechanics has readily been applied the field optics with numerous demonstrations exotic properties photonic systems. In this work, we report on implementation single frequency electrically injected distributed feedback (DFB) laser diodes based symmetric dual gratings a standard ridge waveguide configuration. We demonstrate enhanced modal discrimination for these devices as compared index or gain coupled ones, fabricated same technology run. Optical transmission probing experiments further show asymmetric amplification light propagation confirming signature unidirectional behavior. Another asset complex is highlighted terms robustness to optical feedback.
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ژورنال
عنوان ژورنال: Nanophotonics
سال: 2021
ISSN: ['2192-8606', '2192-8614']
DOI: https://doi.org/10.1515/nanoph-2020-0587