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High-gain waveguide amplifiers in Si3N4 technology via double-layer monolithic integration [Cover Paper]

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Silicon nitride (Si3N4)-on-SiO2 attracts increasing interest in integrated photonics owing to its low propagation loss and wide transparency window, extending from 400 nm to 2350 nm. Scalable integration of active devices such as amplifiers and lasers on the Si3N4 platform will enable applications requiring optical gain and a much-needed alternative to hybrid integration, which suffers from high cost and lack of high-volume manufacturability. We demonstrate a high-gain optical amplifier in Al2O3:Er3+ monolithically integrated on the Si3N4 platform using a double photonic layer approach. The device exhibits a net Si3N4-to-Si3N4 gain of 18.1±0.9 dB at 1532 nm, and a broadband gain operation over 70 nm covering wavelengths in the S-, C- and L-bands. This work shows that rare-earth-ion-doped materials and in particular, rare-earth-ion-doped Al2O3, can provide very high net amplification for the Si3N4 platform, paving the way to the development of different active devices monolithically integrated in this passive platform.

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所属栏目:Integrated Optics

基金项目:Stichting voor de Technische Wetenschappen10.13039/501100003958; Optical Sciences Group at University of Twente;




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Jinfeng Mu:Optical Sciences Group, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
Meindert Dijkstra:Optical Sciences Group, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
Jeroen Korterik:Optical Sciences Group, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
Herman Offerhaus:Optical Sciences Group, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
Sonia M. García-Blanco:Optical Sciences Group, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands

联系人作者:Jinfeng Mu(jinfeng.mu@icloud.com)

备注:Stichting voor de Technische Wetenschappen10.13039/501100003958; Optical Sciences Group at University of Twente;

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Jinfeng Mu, Meindert Dijkstra, Jeroen Korterik, Herman Offerhaus, and Sonia M. García-Blanco, "High-gain waveguide amplifiers in Si3N4 technology via double-layer monolithic integration," Photonics Research 8(10), 1634-1641 (2020)

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