Abstract

In this article, a design of integrated flexible-grid mode- and wavelength-selective switch consisting of silicon-based symmetric Y-junctions and double-series coupled microring resonators with interferometric couplers is introduced in detail. Using thermal tuning, the described device is capable of routing each mode and wavelength signal from the input port to any output port flexibly and independently, forming different bandwidths as needed. For fixed field coupling coefficients, the device can support multiple different wavelength-channel spacings. A silicon-based flexible-grid 1 × 6 mode- and wavelength-selective switch is carefully designed and analyzed as an example. The designed device works for two mode channels and three wavelength channels. The wavelength-channel spacing can vary from 0.10 to 0.80 nm and the 3-dB bandwidth changes from 0.08 to 2.00 nm. When the wavelength-channel spacing is set to be 0.80 nm, the extinction ratio is greater than 50.90 dB and the crosstalk is less than −15.36 dB.

Experimental demonstration of a flexible-grid 1×2 wavelength-selective switch based on silicon microring resonators

Weiwei Chen, Hao Lu, Shiqi Li, Pengjun Wang, Shixun Dai, Tianjun Yang, Bohao Zhang, Ruolan Yu, Qiang Fu, Jun Li, Yan Li, Tingge Dai, Yuehai Wang, and Jianyi Yang
Opt. Lett. 44(2) 403-406 (2019)

A wavelength-selective add-drop switch using silicon microring resonator with a submicron-comb electrostatic actuator

Kazunori Takahashi, Yoshiaki Kanamori, Yasuo Kokubun, and Kazuhiro Hane
Opt. Express 16(19) 14421-14428 (2008)

Mode-insensitive and mode-selective optical switch based on asymmetric Y-junctions and MMI couplers

Shijie Sun, Qidong Yu, Yuanhua Che, Tianhang Lian, Yuhang Xie, Daming Zhang, and Xibin Wang
Photon. Res. 12(3) 423-430 (2024)

Compact on-chip 1 × 2 wavelength selective switch based on silicon microring resonator with nested pairs of subrings

Jiayang Wu, Pan Cao, Ting Pan, Yuxing Yang, Ciyuan Qiu, Christine Tremblay, and Yikai Su
Photon. Res. 3(1) 9-14 (2015)

Silicon three-mode (de)multiplexer based on cascaded asymmetric Y junctions

Weiwei Chen, Pengjun Wang, Tianjun Yang, Gencheng Wang, Tingge Dai, Yawei Zhang, Liqiang Zhou, Xiaoqing Jiang, and Jianyi Yang
Opt. Lett. 41(12) 2851-2854 (2016)