Authors: Liu, DP; Sun, SQ; Yin, XJ; Sun, BL; Sun, JW; Liu, Y; Li, W; Zhu, NH; Li, M
OPTICS EXPRESS
Volume: 27 Issue: 8 Pages: 11585-11593 Published: APR 15 2019 Language: English Document type: Article
DOI: 10.1364/OE.27.011585
Abstract:
Temporarily storing light occupies a pivotal position in all-optical packet switching network and microwave photonics. An integrated optical buffer with large capacity and low loss is demonstrated on a silica wafer. The optical buffer consists of four silica waveguide delay lines connected by five thermo-optic switches. With different switch combinations applied, related delay lines are selected to realize a different storage time in the buffer, and a storage time up to 100 ns with a 10-ns step size is implemented. By optimizing the fabrication process and introducing the offsets between straight and bending waveguides, the propagation loss as low as similar to 1.08 dB/m is achieved. This large-capacity and low-loss buffer enables broad applications in optical communications and microwave photonics. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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