Decoupling of Multiple Coupled Photonic Crystal Waveguides

作者：Yu Tianbao^*; Liu Nianhua; Huang Jiehui; Yang Jianyi; Jiang Xiaoqing

来源：IEEE Photonics Technology Letters, 2009, 21(7): 423-425.

DOI：10.1109/LPT.2009.2013131

• Decoupling
• integrated photonics
• photonic crystals (PhCs)
• waveguide couplers

Decoupling of multiple coupled photonic crystal waveguides (M-CPCWs) is investigated based on the self-imaging principle. We choose the three-, four-, and eight-CPCWs as typical structures to discuss the general characteristics of the M-CPCWs. It is found that around the frequency where the multiple guided modes are almost degenerate, the power transfer in the M-CPCWs is eliminated for any entrance. The frequency region for decoupling is insensitive to the number of coupled waveguides with the extinction ratios higher than -15 dB. The decoupling of the M-CPCWs exhibit many advantages and may have practical applications in photonic integrated circuits.

• 出版日期2009-4-1
• 单位南昌大学; 浙江大学