480 Gbps WDM Transmission Through an Al2O3:Er3+ Waveguide Amplifier

Themistoklis Chrysostomidis, Ioannis Roumpos, Konstantinos Fotiadis, Jinfeng Mu, Athanasios Manolis, Christos Vagionas, Meindert Dijkstra, Sonia M. Garcia Blanco, Theonitsa Alexoudi, Konstantinos Vyrsokinos

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The increasing need for more efficient communication networks has been the main driving force for the development of complex photonic integration circuits combining active and passive building blocks towards advanced functionality. However, this perpetual effort comes with the cost of additive power losses and the research community has resorted to the investigation of different materials to establish efficient on chip amplification. Among the different proposals, erbium doped waveguide amplifiers appear to be a promising solution for high performance transmission in the C-band band with low fabrication cost, due to their CMOS compatibility and integration potential with the silicon\silicon nitride photonic platforms. In this paper we provide a holistic study for high-speed WDM transmission capabilities of a monolithically integrated Al2O3:Er3+ spiral waveguide amplifier co-integrated with Si3N4 components, providing a static characterization and a dynamic evaluation for (a) 440 Gbps, (b) 840 Gbps and (c) 860 Gbps WDM transmissions achieving clearly open eye diagram in all cases. The active region of the erbium doped waveguide amplifier consists of a 5.9 cm Al2O3:Er3+ spiral adiabatically coupled to passive Si3N4 waveguides combined with on chip 980 nm/1550 nm WDM Multiplexers/Demultiplexers. Experimental results reveal bit error rate values below the KR4 FEC limit of 210-5 for all channels, without any DSP applied on the transmitter or receiver side for a 440 Gbps and 840 Gbps data stream transmission.
Original languageEnglish
Pages (from-to)735-743
Number of pages9
JournalJournal of lightwave technology
Issue number3
Early online date20 Oct 2021
Publication statusPublished - 1 Feb 2022


  • Erbium
  • Monolithic integrated circuits
  • Optical amplifiers
  • Optical fiber amplifiers
  • Optical fiber couplers
  • Optical waveguides
  • Silicon
  • Spirals
  • Wavelength division multiplexing


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