| 摘要 |
PURPOSE:To improve the transmission quality of a light communication by distincting the reflecting light with the original oscillating light to form a structure for concentrating the original oscillation light in gain and eliminating the affect of the reflected light. CONSTITUTION:The light generated in a gain region 5 is turned in both clockwise and counterclockwire. In case of counterclockwise light, it is partly picked up via a directional coupler 6 into a light waveguide 4, and the residue is again returned to the gain region 5, amplified and passed through the directional coupler 7 to be again introduced into the directional coupler 6. In case of clockwise light, it is not losed in the directional coupler 6, but introduced via the coupler 7 into a branch light waveguide 8 to become heat at the no-reflecting terminal 9 to be terminated. The counterclockwise light is the original necessary light outputted through the light pickup light waveguide 4. |
