发明名称 |
Optical transmitting and receiving device and the manufacturing method |
摘要 |
An insulation film (silicon dioxide film) is laminated on a platform substrate of Si, etc., and a transmitting unit wiring pattern and a receiving unit wiring pattern are provided on the insulation film. Although a base intruded in a convex shape is provided at the bottom of a light emitting device (LED) of the platform substrate, this base is not provided at the bottom of a light receiving device, and the insulation film under the light receiving device becomes thick. A groove is formed in a waveguide, and a WDM filter is mounted. A diamond or SiC layer can also be provided beneath the insulation film to improve the insulation resistance, and a conduction layer is provided beneath the diamond or SiC layer. Electrical crosstalk is suppressed by grounding the conduction layer. Optical crosstalk is improved by locating the LED at the entrance/exit of the WDM filter and the light receiving device on the opposite side. <IMAGE> |
申请公布号 |
EP0929108(A2) |
申请公布日期 |
1999.07.14 |
申请号 |
EP19980114170 |
申请日期 |
1998.07.29 |
申请人 |
FUJITSU LIMITED |
发明人 |
TERADA, KOJI;TABUCHI, HARUHIKO;TANAKA, KAZUHIRO |
分类号 |
G02B6/42;G02B6/122;G02B6/43;H01L31/0232;H01S5/00;H04B10/2507;H04B10/40;H04B10/50;H04B10/60 |
主分类号 |
G02B6/42 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|