8×40 Gbps WDM Amplification in a Monolithically Integrated Al2O3:Er3+-Si3N4 Waveguide Amplifier
- 10 September 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 33 (21), 1177-1180
- https://doi.org/10.1109/lpt.2021.3111894
Abstract
On chip waveguide optical amplifiers have been extensively studied over the last years, with a wide variety of materials tested and proposed for different applications. Among the most prominent solutions for on-chip amplification, erbium doped waveguide amplifiers (EDWAs) are able to offer attractive performance metrics that can exceed SOA-based amplification solutions in traditional single and multi-channel systems. In this letter, we experimentally demonstrate a record high $8\times 40$ Gbps non return to zero (NRZ) wavelength division multiplexing (WDM) data amplification through a 5.9 cm long on-chip amplifier consisting of an erbium-doped aluminum oxide spiral waveguide monolithically integrated on the Si 3 N 4 platform. Experimental results show more than 12.7 dB amplification per channel for low saturation total input power of −2.75 dBm, and clear eye diagrams and bit-error rate values below the KR4-FEC limit of $2\times 10 ^{-5}$ for all eight channels without any digital signal processing (DSP) applied to the signal to the receiver or transmitter side. The high losses from the fiber to chip interfaces, however, prevented achieving device net gain.Keywords
Funding Information
- Hellenic Foundation for Research and Innovation
- General Secretariat for Research and Technology through Optical Random-Access Memories for Low-Latency High Throughput and Energy Efficient Disintegrated Computing Architectures (585)
- Stichting voor de Technische Wetenschappen (STW-13536)
- European Union’s Horizon 2020 Research and Innovation Program (648978)
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