Journal
OPTICS LETTERS
Volume 46, Issue 3, Pages 580-583Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.410477
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Funding
- National Key Research and Development Program of China [2019YFA0705000, 2019YFB1803900]
- National Natural Science Foundation of China [11690031, 11761131001, 11904061]
- Key Research and Development Program of Guangdong Province [2018B030329001]
- Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01X121]
- Project of Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education [RIMP2019003]
- Innovation Fund of WNLO [2018WNLOKF010]
- Guangzhou Science and Technology Program [201707010096]
- Guangxi Youth and Middle Aged Ability Promotion Project [2019KY0126]
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The proposed reconfigurable bandpass filter, implemented by cascaded Sagnac loop mirror (SLM)-based coupled resonator optical waveguides (CROWs) on the silicon-on-insulator platform, demonstrates high performance and flexibility, suitable for next-generation flexible-grid WDM networks.
We demonstrate a high-performance reconfigurable bandpass filter implemented by cascaded Sagnac loop mirror (SLM)-based coupled resonator optical waveguides (CROWs) on the silicon-on-insulator platform. By dynamic thermal tuning of the reflectivity in each SLM, the proposed filter can achieve simultaneous 3 dB bandwidth tuning from 8.50 to 20.25 GHz and a central wavelength tuning range of 216.25 GHz. A box-like filtering response with an ultra-high extinction ratio up to 70 dB and an ultra-sharp roll-off of 0.61 are observed in a 6th-order SLM-coupled resonator optical waveguide (SLM-CROW). The proposed reconfigurable SLM-CROW filter can satisfy the demand for next-generation flexible-grid WDM networks. (C) 2021 Optical Society of America
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