| 摘要 |
An optical transmitter including: an optical module; an interconnecting circuit board configured to be electrically coupled to the optical module; and a printed circuit board configured to be electrically coupled to the interconnecting circuit board; wherein the interconnecting circuit board includes: a coplanar waveguide; and a microstrip line including a signal wiring line extended from an end of the coplanar waveguide and a ground wiring line, wherein the width of the signal wiring line is narrower than the width of a signal wiring line of the coplanar waveguide, and the spacing between the signal wiring line extended from the end of the coplanar waveguide and the ground wiring line is smaller than the spacing between the signal wiring line of the coplanar waveguide and the ground wiring line. |
