| 摘要 |
An embodiment of the present invention provides an optical device, and the optical device comprises: an optical splitter, an array waveguide grating, a wavelength division multiplexer, and a reflecting film. The optical device has an upper layer and a lower layer. The optical splitter and the wavelength division multiplexer are disposed on the upper layer, and the reflecting film and the array waveguide grating are disposed on the lower layer; or the array waveguide grating and the wavelength division multiplexer are disposed on the upper layer, and the reflecting film and the optical splitter are disposed on the lower layer. The wavelength division multiplexer or the reflecting film is respectively close to an input end of the optical device, and is disposed at a fixed angle. The projection of the wavelength division multiplexer partially covers the reflecting film, so that a part of an optical signal passing through the wavelength division multiplexer is perpendicularly incident to the reflecting film, thereby implementing two-layer waveguide integration of the optical splitter and the array waveguide grating, so that the optical device has advantages of high performance, large bandwidth, high isolation degree, and small dimension. |
