A compact SOI polarization beam splitter based on multimode interference coupler

Z. Tu; Y. W. Huang; H. X. Yi; X. J. Wang; Y. P. Li; L. Li; W. W. Hu

doi:10.1117/12.905589

29 November 2011 A compact SOI polarization beam splitter based on multimode interference coupler

Z. Tu, Y. W. Huang, H. X. Yi, X. J. Wang, Y. P. Li, L. Li, W. W. Hu

Proceedings Volume 8307, Passive Components and Fiber-Based Devices VIII; 830707 (2011) https://doi.org/10.1117/12.905589
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

A multimode interference (MMI) polarization splitter with easy fabrication process was demonstrated in Silicon-On-Insulator substrate. The minimum device size, 8 μm×1034 μm was designed by Quasistate imaging effect theory. Numerical simulations show that this optimized MMI polarization splitter has a good fabrication tolerance. The tolerance of width and length is ±0.04 μm and ± 10 μm for transverse electric (TE) mode and ±0.14 μm and ±35 μm for transverse magnetic (TM) mode. The bandwidths are 20 nm and 80 nm for TE and TM respectively. Experiment results exhibits a -15 dB polarization extinction ratio bandwidth of 20 nm for the through-path and much wider for the crosspath. The extinction ratio and crosstalk achieve (-27.3 dB, -22.6 dB) for TE and (-26.6 dB, -23.9 dB) for TM.

Citation Download Citation

Z. Tu, Y. W. Huang, H. X. Yi, X. J. Wang, Y. P. Li, L. Li, and W. W. Hu "A compact SOI polarization beam splitter based on multimode interference coupler", Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 830707 (29 November 2011); https://doi.org/10.1117/12.905589

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