Abstract
The present invention relates to a waveguide coupling device with coupling properties of co-direction and contra-direction as well as a manufacturing method thereof, the waveguide coupling device comprises: a substrate, at least one contra-direction coupling layer, a media layer, and at least one co- direction coupling layer. One end of the co- direction coupling layer is adopted for connecting to an external optical fiber, so as to couple the optical wave propagating in the optical fiber; moreover, by way of the specific coupling sequence of: (co-direction coupling layer)-(media layer)-(contra-direction coupling layer), the optical wave may be efficiently coupled into, be confined in, and propagates in the contra-direction coupling layer. In addition, through the manufacturing method, the waveguide coupling device with coupling properties of co-direction and contra-direction can be massively fabricated by the present semiconductor process with low cost.