Wavelength locking device, beam collimating device, and optical disk apparatus
文献类型：专利
| 作者 | NISHIWAKI, SEIJI; ASADA, JUNICHI |
| 发表日期 | 1997-11-04 |
| 专利号 | US5684900 |
| 著作权人 | MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Wavelength locking device, beam collimating device, and optical disk apparatus |
| 英文摘要 | A waveguide layer is formed on a transparent substrate disposed to cross an optical axis perpendicularly, and on the waveguide layer, a concentric circular grating coupler is disposed so that the optical axis passes the center. A light beam radiated from a semiconductor laser passes through the transparent substrate and enters the waveguide layer. Light beams enter the respective positions of the grating coupler are excited and move from the periphery to the center, and the light beams pass through the center and become waveguide light beams. The waveguide light beam is the reverse wave of the waveguide light beam inputted at the transmittance position. Therefore, the radiant beam radiated from the grating coupler also becomes a reverse wave inputted at the irradiating position, and is accurately fed back to the semiconductor laser. The laser wavelength is locked since the radiant beam has wavelength selectivity. |
| 公开日期 | 1997-11-04 |
| 申请日期 | 1995-10-31 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/38814]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
| 推荐引用方式 GB/T 7714 | NISHIWAKI, SEIJI,ASADA, JUNICHI. Wavelength locking device, beam collimating device, and optical disk apparatus. US5684900. 1997-11-04. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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