Optical transmitting and receiving device and the manufacturing method

An optical transmitting and receiving device, comprising:

• a conduction layer formed on all or a part of a top of a substrate;
• an insulation layer formed at a bottom of at least a light emitting device mounting portion and a light receiving device mounting portion on the substrate;
• an optical waveguide formed on the insulation layer;
• an electric wiring pattern formed on the insulation layer;
• and
• a light emitting device and a light receiving device connected to the electric wiring pattern so as to be optically coupled with the waveguide, wherein
• said conduction layer is electrically connected to a constant potential portion and is insulated from the electric wiring pattern with high impedance, and
• said insulation layer includes an SiC layer or diamond thin film layer.

An optical transmitting and receiving device, comprising:

• a conduction layer formed on all or a part of a top of a substrate;
• an insulation layer formed at a bottom of at least a light emitting device mounting portion and a light receiving device mounting portion on the substrate;
• an optical waveguide formed on the insulation layer;
• an electric wiring pattern formed on the insulation layer;
• and
• a light emitting device and a light receiving device connected to the electric wiring pattern so as to be optically coupled with the waveguide, wherein
• said conduction layer is electrically connected to a constant potential portion and is insulated from the electric wiring pattern with high impedance, and
• said insulation layer at the bottom of the light receiving device is thicker than said insulation layer at the bottom of the light emitting device.

An optical transmitting and receiving device, comprising:

• a conduction layer formed on all or a part of a top of a substrate;
• an insulation layer formed at a bottom of at least a light emitting device mounting portion and a light receiving device mounting portion;
• an optical waveguide formed on the insulation layer;
• an electric wiring pattern formed on the insulation layer;
• and
• a light emitting device and a light receiving device connected to the electric wiring pattern so as to be optically coupled with the waveguide, wherein
• said conduction layer is electrically connected to a constant potential portion, and
• said insulation layer includes an SiC layer or diamond thin film layer.

An optical transmitting and receiving device, comprising:

• a conduction layer formed on all or a part of a top of a substrate;
• an insulation layer formed at a bottom of at least a light emitting device mounting portion and a light receiving device mounting portion;
• an optical waveguide formed on the insulation layer;
• an electric wiring pattern formed on the insulation layer;
• and
• a light emitting device and a light receiving device connected to the electric wiring pattern so as to be optically coupled with the waveguide, wherein
• said conduction layer is electrically connected to a constant potential portion, and said insulation layer at the bottom of the light receiving device is thicker than said insulation layer at the bottom of the light emitting device.