9 June 2016 Theoretical analysis of polarization-coupled mode splitting in a single microfiber knot-ring resonator
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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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Weiqia Qiu, Weiqia Qiu, Junjie Zhou, Junjie Zhou, Jianhui Yu, Jianhui Yu, Yi Xiao, Yi Xiao, Huihui Lu, Huihui Lu, Heyuan Guan, Heyuan Guan, Yongchun Zhong, Yongchun Zhong, Jun Zhang, Jun Zhang, Zhe Chen, Zhe Chen, } "Theoretical analysis of polarization-coupled mode splitting in a single microfiber knot-ring resonator," Optical Engineering 55(6), 066108 (9 June 2016). https://doi.org/10.1117/1.OE.55.6.066108 . Submission:
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