本論文目的主要是改善光源經過光導時,根據光柵繞射公式,不同波長經過光柵的繞射角度皆會不同。當由一片全像片傳遞至另一片時,由於全像片的角度容忍度關係,會導致波長遇到不匹配的角度會有濾波的效果。因此我們可以透過製造相對應的頻譜分布讓光源不被濾波而達到效率提升的結果。;The purpose of this paper is to improve the efficiency of light transmission through a light guide with two volume holographic optical element. When light transmit in light guide, the angle tolerance will lead to filtering effects on mismatch wavelengths. To solve this problem, we create corresponding spectral distributions to prevent filtering and achieve enhanced efficiency.