构建一种光纤-空间混合光路干涉仪，由光纤发射点光源假设导出空间干涉条纹形状的几何形式并进行实验验证;建立干涉光强参数应用模型，讨论了干涉仪的条纹可见度及其偏振特性;理论、实验和参数应用模型表明，此类干涉仪具有结构紧凑、可视化和操作便利性特点，可以作为通用干涉仪用于条纹相移型检测、剪切干涉型测量和光学全息，亦可扩展其光纤传感功能.

A fiber-space hybrid optical path interferometer is constructed. The geometrical form of the shape

of interference fringes in space is derived from assuming the point source of optical fiber emission and verified experimentally. The parameter model of the interference intensity is established，and the fringe visibility and polarization characteristics of the interferometer are discussed. Theoretical，experimental and parametric application model show that the interferometers are characterized by miniaturization，visualization and ease of operation. They can be used to general-|purpose interferometers for fringe phase shift detection，shear interference measurement and optical holography，and can also be used to expand the optical fiber sensing functions.