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Optical Engineering

Theoretical analysis of polarization-coupled mode splitting in a single microfiber knot-ring resonator
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Paper Abstract

We established a theoretical model for a single knot-ring resonator and investigated the transmission spectrum by Jones matrix. The numerical results show that two orthogonal polarization modes of knot-ring, which are originally resonated at the same wavelength, will split into two resonant modes with different wavelengths. The mode splitting is due to the coupling between the two orthogonal polarization modes in the knot-ring when the twisted angle of the twist coupler is not exactly equal to 2 (m is an integer). It is also found that the separation of the mode splitting is linearly proportional to the deviation angle δθ with a high correlation coefficient of 99.6% and a slope of 3.17  nm/rad. Furthermore, a transparency phenomenon analogous to coupled-resonator-induced transparency was also predicted by the model. These findings may have potential applications in lasers and sensors.

Paper Details

Date Published: 9 June 2016
PDF: 5 pages
Opt. Eng. 55(6) 066108 doi: 10.1117/1.OE.55.6.066108
Published in: Optical Engineering Volume 55, Issue 6
Show Author Affiliations
Weiqia Qiu, Jinan Univ. (China)
Junjie Zhou, Jinan Univ. (China)
Jianhui Yu, Jinan Univ. (China)
Yi Xiao, Jinan Univ. (China)
Huihui Lu, Jinan Univ. (China)
Heyuan Guan, Jinan Univ. (China)
Yongchun Zhong, Jinan Univ. (China)
Jun Zhang, Jinan Univ. (China)
Zhe Chen, Jinan Univ. (China)

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