与波导表面垂直等量发射的线阵全息波导光互联

Transmission volume gratings array with energy-equalized normal-surface outputs for optical interconnect

摘要: 报道了以玻璃为基、以光致聚合物制造透射体积输出光栅的全息波导光互联,并通过实验绘制了光栅的衍射效率与曝光时间曲线。通过控制各输出光栅的衍射效率,可实现用一束与波导表面垂直的入射光,产生6束与波导表面垂直且能量相等的出射光。输出光栅的最大衍射效率仅需趋于50%。在波长为632.8nm的红光下,测出输出光偏离表面垂直方向的角度为0.43°,输出光的相对强度的最大偏差为11%。

Abstract: In this paper, we report a kind of holographic wave-guided optical interconnect based on a glass substrate and transmission volume gratings in photopolymer. An experimental curve of diffraction efficiency for each output grating was plotted. Maximum diffraction efficiency of output grating tends to 50%. The angular deviation of output light from the surface-normal is 0.43° and the relative intensity fluctuation of output light is 11% while the wavelength is 632.8nm.