Erbium‐Doped Lithium Niobate‐on‐Insulator Waveguide Amplifier With 28 dB Fiber‐to‐Fiber Net Gain

ABSTRACT High‐gain optical amplifiers are critical for extending transmission capacity in optical communication and signal processing systems. We demonstrate a micro‐waveguide amplifier based on an erbium‐doped lithium niobate‐on‐insulator (Er:LNOI) platform. Under bidirectional pumping at 1480 nm, the amplifier achieves a fiber‐to‐fiber net gain exceeding 28 dB at 1531 nm with an input signal power of −25 dBm and a noise figure of 5.3 dB. The device also delivers a maximum output power exceeding 15 dBm. This fiber‐to‐fiber net gain represents the highest value reported for erbium‐doped integrated waveguide amplifiers among all platforms to date, demonstrating that micro‐waveguide geometry on the lithium niobate platform offers a promising architecture for high‐gain amplifiers in integrated photonic systems.

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Publication Details

Journal
Laser & Photonics Review
Published
2026-08-17
DOI
https://doi.org/10.1002/lpor.71753
Primary Topic
Photorefractive and Nonlinear Optics
Type
article
Field-Weighted Citation Impact
0.00

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article

Erbium‐Doped Lithium Niobate‐on‐Insulator Waveguide Amplifier With 28 dB Fiber‐to‐Fiber Net Gain

Liwen Deng, Yuanlin Zheng, Hao Li, Xianfeng Chen et al.
Laser & Photonics Review
Photorefractive and Nonlinear Optics
article

Erbium‐Doped Lithium Niobate‐on‐Insulator Waveguide Amplifier With 28 dB Fiber‐to‐Fiber Net Gain

Liwen Deng, Yuanlin Zheng, Hao Li, Xianfeng Chen, Tingting Ding, Zhixuan Yu, Jing Qiu, Feng Dang, Jinli Han
article en

Abstract

ABSTRACT High‐gain optical amplifiers are critical for extending transmission capacity in optical communication and signal processing systems. We demonstrate a micro‐waveguide amplifier based on an erbium‐doped lithium niobate‐on‐insulator (Er:LNOI) platform. Under bidirectional pumping at 1480 nm, the amplifier achieves a fiber‐to‐fiber net gain exceeding 28 dB at 1531 nm with an input signal power of −25 dBm and a noise figure of 5.3 dB. The device also delivers a maximum output power exceeding 15 dBm. This fiber‐to‐fiber net gain represents the highest value reported for erbium‐doped integrated waveguide amplifiers among all platforms to date, demonstrating that micro‐waveguide geometry on the lithium niobate platform offers a promising architecture for high‐gain amplifiers in integrated photonic systems.

Laser & Photonics Review
Shanghai University of Engineering Science (CN), Shanghai Jiao Tong University (CN), Shandong Normal University (CN), Hefei University (CN), Shanghai Clinical Research Center (CN)
National Natural Science Foundation of China, Science and Technology Commission of Shanghai Municipality, National Key Research and Development Program of China
Affordable and clean energy
Openalex Percentile: Top 12%
Photorefractive and Nonlinear Optics
DOISourceOpenAlex
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