制造了工作于微波波段的三角形光子晶体，并测量了光子晶体的透射谱和存在缺陷时的光子晶体的透射谱。在此基础上，研究了它的缺陷模，并讨论了光子晶体的潜在应用 A triangular photonic crystal working in the microwave band was fabricated, and the transmission spectra of photonic crystals and the transmission spectra of photonic crystals in the presence of defects were measured. Based on this, we study its defect modes and discuss the potential application of photonic crystals