Yokoi H, Mizumoto T, Takano T, Shinjo N
Department of Physical Electronics, Faculty of Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
Appl Opt. 1999 Dec 20;38(36):7409-13. doi: 10.1364/ao.38.007409.
The experimental study of an optical isolator by use of a nonreciprocal phase shift is demonstrated. The isolator has an optical interferometer composed of tapered couplers, nonreciprocal phase shifters, and a reciprocal phase shifter. The isolator, designed for a 1.55-microm wavelength, was fabricated to investigate the characteristics of each component. The branching and coupling characteristics of the tapered coupler were measured. The nonreciprocal and reciprocal phase shifts were also evaluated. By applying an external magnetic field to the interferometer, we confirmed the nonreciprocal phase shift in the interferometric isolator.
展示了利用非互易相移对光隔离器进行的实验研究。该隔离器有一个由锥形耦合器、非互易相移器和一个互易相移器组成的光学干涉仪。为1.55微米波长设计的该隔离器被制造出来以研究每个组件的特性。测量了锥形耦合器的分支和耦合特性。还评估了非互易和互易相移。通过向干涉仪施加外部磁场，我们证实了干涉型隔离器中的非互易相移。
