Patent ID: 8611094

Claim:
An optical module, comprising: a package accommodating an optical device therein; a feedthrough disposed on one end side of the package, the feedthrough being electrically connected to the optical device inside the package; and a flexible printed circuit including a fixed portion that is fixed to the feedthrough, wherein the flexible printed circuit comprises: at least one dielectric layer; a first pattern facing portion including a first ground conductor pattern and a first wiring pattern that is electrically connected to the feedthrough with the first ground conductor pattern and the first wiring pattern facing each other through the at least one dielectric layer; and a second pattern facing portion including a second ground conductor pattern and a second wiring pattern that is electrically connected to the feedthrough, the second wiring pattern facing portion facing the first pattern facing portion in a length direction of the at least one dielectric layer at the fixed portion of the flexible printed circuit, and wherein the flexible printed circuit is bent away from the fixed portion to provide connections to another circuit element with at least one of the first ground conductor pattern and the second ground conductor pattern being located between the first wiring pattern and the second wiring pattern along the entire length thereof extending from the fixed portion.