Design of an ultra-broadband silicon mode (de)multiplexer

作者：Chen, Weiwei; Wang, Pengjun^*; Zhang, Yawei; Yang, Jianyi

来源：Optics Communications, 2016, 363: 7-12.

DOI：10.1016/j.optcom.2015.10.066

• Integrated Optics
• Waveguide
• Multiplexing

We propose a low-crosstalk and broadband mode (de)multiplexer. It is designed by cascading mode (de) interleavers utilizing silicon waveguide asymmetric Y-junctions. Asymmetric Y-junctions of each stage are modular. For each asymmetric Y-junction, the even (odd) modes of the stem separated from the odd (even) modes evolve into the low-order modes of the wide (narrow) arm by controlling the widths of the two arms, and vice versa. A four-channel mode (de)multiplexer for TE polarization is analyzed as an example. Simulations show the four-channel mode (de)multiplexer pair has a low crosstalk (< -14.1 dB) over a common spectral bandwidth of 280 nm.

• 出版日期2016-3-15
• 单位宁波大学; 浙江大学