Design of Three-mode Multi/Demultiplexer Based on 2-D Photonic Crystals for Mode-Division Multiplexing Transmission

6th conference on Advances in Optoelectronics and Micro/nano-optics

Fu, Peidong^1 ; Chen, Heming^2

Department of Opto-Electronics, Nanjing University of Posts and Telecommunications, Nanjing

210023, China^1

Bell Honors School, Nanjing University of Posts and Telecommunications, Nanjing

210023, China^2

关键词: 2-D photonic crystals;    Bus waveguides;    Conversion function;    Low insertion loss;    Mode-division multiplexing;    Multi/demultiplexers;    Phase mismatching;    Plane waves methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/844/1/012011/pdf
DOI  :  10.1088/1742-6596/844/1/012011

来源: IOP

【 摘 要 】

A three mode division multiplexer and demultiplexer (MMUX/DEMMUX) base on 2-D photonic crystal at 1550 nm was designed. Two asymmetrical directional couplers are included in this MMUX/DEMMUX, which can achieve modes conversion function of TE0, TE1and TE2modes. In order to avoid phase mismatching in bus waveguide, taper directional is applied at waveguide junction which can reduce the insertion loss effectively. Plane waves method (PWM) and finite difference time domain (FDTD) methods were used to simulating the performance of MMUX/DEMMUX. Numerical simulations show that the designed device has the potential for high-capacity MDM optical communication systems with a low insertion loss (