Design and fabrication of an optical interleaver with cascaded multimode interference couplers.
A lattice-form optical interleaver was designed and fabricated with a silicon-based silica waveguide. Cascaded multimode interference couplers were first employed in the lattice circuit and helped to relax the fabrication tolerance. The device shows good performance, the insertion loss is less than 2.25 dB, the passband ripple is less than 0.15 dB, the cross talk is less than -18.9 dB, and the 0.5 dB passband is more than 100 GHz.
Wan
Zhujun
Z
School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, 430074 Wuhan, China. wanzhujun@tom.com
Wu
Yaming
Y
Yuan
Jing
J
Luo
Fengguang
F