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Proceedings Paper

A widely tunable twin-fano resonator for wavelength monitor
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Paper Abstract

A dual-microring resonator replaces one of the couplers of the Mach-Zehnder interferometer (MZI) to achieve a widely tunable twin-fano resonance, which originates from the interference and coupling of mode in a dual-microring resonator. The slope can be tuned in a wide range from -84.2 dB/nm to 91.0 dB/nm by metal heaters integrated on one arm of the MZI, and the resonant wavelength fixes when slope changes. The “X-type” spectrum is shown by self-alignment, which means manual alignment to form “X-type” line is unnecessary after tuning dual-microrings because the “X-type” line can be produced easily by the difference of two correlated spectrums rather than two independent spectra. Meanwhile, it shows high wavelength resolution of 1 pm with an ideal resolution of 0.4 pm in the region of the slope of 127.4 dB/nm, which can be applied to wavelength monitoring with ultra-high resolution.

Paper Details

Date Published: 26 February 2020
PDF: 6 pages
Proc. SPIE 11285, Silicon Photonics XV, 112851R (26 February 2020); doi: 10.1117/12.2545395
Show Author Affiliations
Xiaoqing Guo, Zhejiang Univ. (China)
Tingge Dai, Zhejiang Univ. (China)
Bei Chen, Zhejiang Univ. (China)
Hui Yu, Zhejiang Univ. (China)
Yuehai Wang, Zhejiang Univ. (China)
Jianyi Yang, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 11285:
Silicon Photonics XV
Graham T. Reed; Andrew P. Knights, Editor(s)

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