| 摘要 |
The present invention provides a low-cost optical assembly with both function of the optical transmission and the optical reception to the single fiber. The optical assembly provides both devices of the light-emitting and the light-receiving. The light-emitting device emits light with the first wavelength to the first direction, while, the light-receiving device provides an optical thin film that reflects the light with the first wavelength incident from the first direction to the second direction different from the first direction, while, transmits the light with the second wavelength that is incident from the second direction to a light-sensitive area formed within the light-receiving device.
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