Erbium-doped lithium niobate waveguide amplifier enhanced by an inverse-designed on-chip reflector

Fuente: arXiv
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Bibliographic Details
Main Authors: Wei, Zhiwei, Wu, Jiangwei, Chen, Chengyu, Li, Hao, Wan, Wenjie, Chen, Xianfeng, Chen, Yuping
Format: Preprint
Published: 2025
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author Wei, Zhiwei
Wu, Jiangwei
Chen, Chengyu
Li, Hao
Wan, Wenjie
Chen, Xianfeng
Chen, Yuping
author_facet Wei, Zhiwei
Wu, Jiangwei
Chen, Chengyu
Li, Hao
Wan, Wenjie
Chen, Xianfeng
Chen, Yuping
contents This study presents a 3.6-cm-long erbium-doped lithium niobate waveguide amplifier enhanced by an inverse-designed on-chip reflector. Integrating the reflector at the waveguide end yielded an internal net gain of 40.5 dB, achieving a 17.3 dB gain improvement compared to a comparable reflector-free amplifier under small signal conditions. By eliminating bidirectional pumping requirements, the system complexity was reduced. These results highlight a novel strategy for optimizing integrated optical amplifiers, combining high gain with simplified architecture. The approach holds promise for advancing high-density photonic integrated systems, demonstrating the efficacy of inverse design in tailoring photonic device performance for practical applications.
format Preprint
id arxiv_https___arxiv_org_abs_2504_04149
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Erbium-doped lithium niobate waveguide amplifier enhanced by an inverse-designed on-chip reflector
Wei, Zhiwei
Wu, Jiangwei
Chen, Chengyu
Li, Hao
Wan, Wenjie
Chen, Xianfeng
Chen, Yuping
Optics
This study presents a 3.6-cm-long erbium-doped lithium niobate waveguide amplifier enhanced by an inverse-designed on-chip reflector. Integrating the reflector at the waveguide end yielded an internal net gain of 40.5 dB, achieving a 17.3 dB gain improvement compared to a comparable reflector-free amplifier under small signal conditions. By eliminating bidirectional pumping requirements, the system complexity was reduced. These results highlight a novel strategy for optimizing integrated optical amplifiers, combining high gain with simplified architecture. The approach holds promise for advancing high-density photonic integrated systems, demonstrating the efficacy of inverse design in tailoring photonic device performance for practical applications.
title Erbium-doped lithium niobate waveguide amplifier enhanced by an inverse-designed on-chip reflector
topic Optics
url https://arxiv.org/abs/2504.04149