Microstructure Fiber (MSF), also called Photonic Crystal Fiber or Holey Fiber, is a kind of waveguide which a defect is introduced into a perfect two dimensional photonic crystal as a core.

• 微结构光纤(也被称为光子晶体光纤或多孔光纤),就是在二维光子晶体纵向制造线缺陷作为纤芯的光波导。