Invention Application
- Patent Title: Leaky surface-plasmon mode directional coupler and polarization detection module for magneto-optical pickup head using the same
- Patent Title (中): 泄漏表面等离子体模式定向耦合器和偏振检测模块用于磁光拾取头
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Application No.: US10794143Application Date: 2004-03-04
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Publication No.: US20050063644A1Publication Date: 2005-03-24
- Inventor: Yongwoo Park , Hyeon Bong Pyo , Dong Suh , Yeungjoon Sohn , Hojun Ryu , Mun Paek
- Applicant: Yongwoo Park , Hyeon Bong Pyo , Dong Suh , Yeungjoon Sohn , Hojun Ryu , Mun Paek
- Priority: KR2003-64719 20030918
- Main IPC: G02B6/122
- IPC: G02B6/122 ; G11B7/12 ; G11B11/105 ; G02B6/26 ; G02B6/10
Abstract:
A leaky plasmon mode directional coupler and a polarization detection module for a magneto-optical pickup head, which uses the leaky plasmon mode directional coupler, are provided. The leaky plasmon mode directional coupler is manufactured by integrating a planar waveguide and a leaky plasmon mode waveguide, which share a cladding layer with each other, into one body. The polarization detection module includes the leaky plasmon mode directional coupler, a first photo diode, which is formed on the leaky plasmon mode directional coupler, and a second photo diode, which is located at an output port of the planar waveguide.
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