| 发明名称 |
EXTERNAL CAVITY TYPE TUNABLE WAVELENGTH LASER MODULE FOR TO-CAN PACKAGING |
| 摘要 |
Provided is a tunable wavelength laser module including: an external cavity type light source generating broadband light; an optical waveguide; a Bragg grating formed in the optical waveguide; a heater provided above the optical waveguide in which the Bragg grating is formed and adjusting a reflection band of the Bragg grating by a thermo-optic effect; a direction change waveguide region changing direction of optical signals obtained by the adjusted reflection band of the Bragg grating, by a predetermined angle; a 45-degree reflection part transmitting some of the optical signals direction-changed by the direction change waveguide region and escaping from the optical waveguide therethrough and reflecting the others of the optical signals in a vertical upward direction thereby; and a lens making the optical signals reflected in the vertical upward direction by the 45-degree reflection part collimated light or convergent light. |
| 申请公布号 |
US2017093118(A1) |
申请公布日期 |
2017.03.30 |
| 申请号 |
US201515311798 |
申请日期 |
2015.05.20 |
| 申请人 |
CHEM OPTICS INC. |
发明人 |
LEE Hak Kyu;PARK Joon Oh;SEO Jun Kyu;SHIN Jang Uk |
| 分类号 |
H01S3/131;H01S3/139;H01S5/14 |
主分类号 |
H01S3/131 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An external cavity type tunable wavelength laser module comprising:
an external cavity type light source generating broadband light; an optical waveguide to which the broadband light output from the light source is input; a Bragg grating formed in the optical waveguide; a heater provided above the optical waveguide in which the Bragg grating is formed and adjusting a reflection band of the Bragg grating by a thermo-optic effect; a direction change waveguide region changing direction of optical signals obtained by the adjusted reflection band of the Bragg grating, by a predetermined angle, to output direction-changed optical signals; a 45-degree reflection part transmitting some of the direction-changed optical signals escaping from the optical waveguide therethrough and reflecting a remainder of the direction-changed optical signals in a vertical upward direction thereby; and a lens making the direction-changed optical signals reflected in the vertical upward direction by the 45-degree reflection part collimated light or convergent light. |
| 地址 |
Daejeon KR |
