| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical isolator which is capable of surely blocking return light with a simple operation and advantageous in terms of cost. ! SOLUTION: In a method for manufacturing an optical isolator 10 including an isolator core 1 and a magnetic structure 2 applying a magnetic field to the isolator core 1, the isolator core 1 includes a polarizer 7, a Faraday rotator 5 made of a paramagnetic material and having a Faraday effect, and an analyzer 4 in the order of transmission of light from the light source. The magnetic structure 2 can adjust the position of a transmission direction. The position of the magnetic structure 2 is adjusted so that the power of transmitted test light L6 becomes minimal, while introducing test light L5 to the isolator core 1 from a direction opposite to the transmission direction of the light from the light source, to measure the power of the test light L6 transmitted through the isolator core 1. ! COPYRIGHT: (C)2015,JPO&INPIT |
