二元纯位相片实现半导体激光器到单模光纤的耦合

Binary Phase Only Masks for Coupling of Semiconductor LD to Fiber

采用二元光学位相调制的基本思想，用二元纯位相型光学系统将椭圆高斯型激光束与单模光纤最佳耦合。采用两块纯位相片来进行波前变换，将椭圆型高斯激光束转变成对称圆高斯激光束，并与单模光纤的基模最佳匹配耦合。

Based on the phase modulation of binary optics, the binary phase only masks are used to couple the elliptical Gaussian beam to single mode fiber. By the wavefront conversion of the beam, two pieces of the phase only masks are used to transform the elliptical Gaussian beam to symmetric Gaussian beam, and then coupled well with the single mode receiving fiber.