现代固体电子学的基础是半导体对能量由 E1 至 E2 的电子具有禁带的材料。这就表明 ,半导体的电子能量不会有该区间的值。对光子存在类似禁带系统的可能性在 70年代作过理论论证 ,现在已获得这种系统。它们称为光子晶体。当然 ,具有电子禁带和光子禁带晶体间的完全类似是不存在 Modern solid-state electronics is based on semiconductors that have bandgap energy for electrons from E1 to E2. This shows that the semiconductor’s electronic energy does not have the value of this interval. The possibility of a similar band-gap system for photons has been demonstrated in the 1970s and is now available. They are called photonic crystals. Of course, there is no such thing as a complete analogy with an electron forbidden band and a photonic band gap crystal