Efficient erbium-doped thin-film lithium niobate waveguide amplifiers

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1161-1164
Journal / PublicationOptics Letters
Volume46
Issue number5
Online published1 Mar 2021
Publication statusPublished - 1 Mar 2021

Abstract

Lithium niobate on insulator (LNOI) is an emerging photonic platform with great promise for use in future optical communications, nonlinear optics, and microwave photonics. An important integrated photonic building block, active waveguide amplifiers, however, are still missing in the LNOI platform. Here, we report an efficient and compact waveguide amplifier based on erbium-doped LNOI waveguides, achieved using a sequence of erbium-doped crystal growth, ion slicing, and lithography-based waveguide fabrication. Using a compact 5 mm long waveguide, we demonstrate an on-chip net gain of >5 dB for 1530 nm signal light with a relatively low pump power of 21 mW at 980 nm. The efficient LNOI waveguide amplifiers could become an important fundamental element in future lithium niobate photonic integrated circuits. (C) 2021 Optical Society of America

Research Area(s)

  • GENERATION, RESONATORS, CONVERSION, MICRODISK

Citation Format(s)

Efficient erbium-doped thin-film lithium niobate waveguide amplifiers. / Chen, Zhaoxi; Xu, Qing; Zhang, Ke et al.
In: Optics Letters, Vol. 46, No. 5, 01.03.2021, p. 1161-1164.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review