Presentation
4 October 2023 Nonreciprocal fiber-optic amplifier enabled by encircling-an-EP emulation and gain saturation nonlinearity
Yu Sung Choi, Seunghan Shin, Sung Ill Moon, Mi Ji Kim, Jae Woong Yoon
Author Affiliations +
Abstract
Optical nonreciprocity is required in many optical systems for signal stabilization, laser protection, non-destructive probing. Here, we experimentally demonstrate a nonreciprocal fiber-optic amplifier enabled by encircling-an-exceptional-point emulation and gain-saturation nonlinearity. We realize the proposed system by combining optical attenuators, Erbium-doped fiber amplifiers (EDFA), and 2x2 couplers. We obtain remarkably high nonreciprocal transmission ratio > 20 dB persisting over the entire gain band from 1,530 to 1,560 nm at moderate input power conditions from 0.1 to 1 mW.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yu Sung Choi, Seunghan Shin, Sung Ill Moon, Mi Ji Kim, and Jae Woong Yoon "Nonreciprocal fiber-optic amplifier enabled by encircling-an-EP emulation and gain saturation nonlinearity", Proc. SPIE PC12647, Active Photonic Platforms (APP) 2023, PC1264717 (4 October 2023); https://doi.org/10.1117/12.2676618
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KEYWORDS
Fiber optics

Nonlinear optics

Optical transmission

Integrated optics

Crystals

Magnetooptics

Optical amplifiers

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