Performance analysis of 45° coupled structure of optical waveguide based on electro-optical printed circuit board

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• 作者：Qing Tao ; Fengguang Luo ; Jing Yuan ; Lu Shi ; Jian Hu ; Xu Ding ; Ruifeng Wang ; Lei Cao
• 关键词：EOPCB ; Doctor-blade ; Finite element
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2011
• 出版时间：January 2011
• 年：2011
• 卷：122
• 期：1
• 页码：76-80
• 全文大小：770 K

文摘

In this paper, the non-ideal 45° coupled structure of the optical waveguide was simulated and analyzed by the finite element theory. Since the doctor-blade and grinding methods were used to product the electro-optical printed circuit board (EOPCB), the thickness of the core layer and the length of the 45° mirror side will be, respectively, in the variation of ±2 μm. In this case, output power values were calculated when the TE10 and TE20 were separately used as input signal; then they were individually compared with the ideal output power values. It can be seen that Δ % is not more than 0.45 % by the TE10 wave, while Δ % is not more than 3.5 % by the TE20 wave. The variation of output power compared with the input power is very small; this technology was more suitable for the actual EOPCB production.