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Proceedings Paper

Cantilever-based microring lasers embedded in a flexible substrate for strain and index gauges
Author(s): Taojie Zhou; Guohong Xiang; Xuan Fang; Xiu Liu; Boyuan Xiang; Zhaoyu Zhang
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Paper Abstract

A cantilever-based microring laser structure was proposed for easily integrating III-V active layer into mechanically stretchable substrates. Local strain gauges were demonstrated by embedding cantilever-based microring lasers in a deformable polymer substrate. The characterizations of microscale local strain gauges had been studied from both simulated and experimental results. The lasing wavelength of strain gauges was blue-shift and linear tuned by stretching the flexible substrate. Gauge factor being ~11.5 nm per stretching unit was obtained for a cantilever-based microring laser with structural parameters R=1.25 μm, W1=450 nm and W2=240 nm. Such microring lasers embedded in a flexible substrate are supposed to function not only as strain gauges for monitoring the micro- or nano-structured deformation, but also tunable light sources for photonic integrated circuits

Paper Details

Date Published: 5 November 2018
PDF: 6 pages
Proc. SPIE 10814, Optoelectronic Devices and Integration VII, 108140E (5 November 2018); doi: 10.1117/12.2502415
Show Author Affiliations
Taojie Zhou, The Chinese Univ. of Hong Kong, Shenzhen (China)
Guohong Xiang, The Chinese Univ. of Hong Kong, Shenzhen (China)
Xuan Fang, The Chinese Univ. of Hong Kong, Shenzhen (China)
Xiu Liu, The Chinese Univ. of Hong Kong, Shenzhen (China)
Boyuan Xiang, The Chinese Univ. of Hong Kong, Shenzhen (China)
Zhaoyu Zhang, The Chinese Univ. of Hong Kong, Shenzhen (China)


Published in SPIE Proceedings Vol. 10814:
Optoelectronic Devices and Integration VII
Xuping Zhang; Baojun Li; Changyuan Yu; Xinliang Zhang, Editor(s)

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