| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical module of an optical isolator structure capable of easily aligning an optical axis and reducing the cost. SOLUTION: The optical module of an optical isolator structure comprises a semiconductor laser 210 for outputting linearly polarized first light in a preset polarization mode, a polarizer 230 the polarization axis of which is inclined by 45°with respect to the first light 201 and arranged so as to be in opposition to one end of the semiconductor laser 210, and a Faraday rotator 220 arranged between the semiconductor laser 210 and the polarizer 230 and outputting the first light 201 to the polarizer 230 after rotating the first light 201 by 45°so that the optical axis of the first light 201 coincides with the polarization axis of the polarizer 230 and outputting second light 202 inputted to the inside of the polarizer 230 to the semiconductor laser 210 after rotating the second light by 45°so that the second light 202 has a polarization mode perpendicular to the first light 201. COPYRIGHT: (C)2005,JPO&NCIPI
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