Abstract:
A wavelength tunable optical transmitter includes a first waveguide receiving incident light through an input port and outputting the incident light to a first output port, a resonant modulator adjacent to the first waveguide and whose resonant wavelength is variable, and a second waveguide disposed optically in parallel to the first waveguide and outputting emitted light to a second output port. The resonant modulator includes a silicon resonator constituted by a crystallized silicon film in the form of a closed loop between the first and second waveguides, a first electrode within the silicon resonator and constituted by a silicon film of a first conductivity type, and a second electrode extending alongside part of the outer circumferential surface of the silicon resonator and constituted by a silicon film of a second conductivity type.
Abstract:
A method of manufacturing a semiconductor apparatus includes forming a gate structure and an etch stop layer structure on a substrate including first and second regions. The gate structure is formed in the first region, and the etch stop layer structure is formed in the second region. A first insulating interlayer is formed on the substrate to cover the gate structure and the etch stop layer structure. The first insulating interlayer is partially removed to expose the etch stop layer structure. The exposed etch stop layer is removed to expose the substrate. An optical device is formed on the exposed substrate.