Analysis of fabrication results for 17 x 17 polymer arrayed waveguide grating multiplexers with flat spectral responses

• Published in: Journal of semiconductors Vol. 34; no. 9; pp. 82 - 85
• Main Author: 秦政坤 于跃 宋佳 张会萍 王国峰 孙永欣 汪玉海
• Format: Journal Article
• Language: English
• Published: 01.09.2013
• Subjects: AWG; Channels; Devices; Diffraction gratings; Gratings (spectra); Multiplexers; Noise levels; Semiconductors; Waveguides; 传输特性; 传输理论; 光谱响应; 制造; 多路复用器; 平坦; 聚合物阵列波导光栅
• ISSN: 1674-4926
• DOI: 10.1088/1674-4926/34/9/094011

Based on transmission theory, a 17 x 17 polymer arrayed waveguide grating （AWG） multiplexer para meter optimization is performed, and the influence of the fabrication results on the transmission characteristics are analyzed. In this paper, we mainly discuss three of the main errors in the fabrication of polymer AWG devices. One is 3n 1, which is caused by the tuning of the core refractive index n 1, the second is 8b, which results from the rotating-coating of the core thickness b, and the other is the non-ideal core cross-section, which is caused by steam redissolution. The effects of the above fabrication errors on the transmission characteristics of the AWG device are investigated, and compensation techniques are proposed. By comparing the theoretical simulation and experimental results, the shift in the transmission spectrum is reduced by 0.028 nm, the 3 dB bandwidth is increased by about 0.036 nm, the insertion loss is reduced by about 3 dB for the central channel and 4.5 dB for the edge channels, and the crosstalk is reduced by 1.5 dB.