Patent ID: 7478953

Claim:
An optical transceiver, comprising: a circuit board that installs an electronic circuit; and a bi-directional optical subassembly including a first optical subassembly having a first optical axis and a second optical subassembly having a second optical axis substantially in perpendicular to the first optical axis, the second optical subassembly being electrically connected with the electronic circuit on the circuit board with a flexible printed circuit board, wherein the circuit board has a front edge with an obtuse angle with respect to the first optical axis, and wherein the flexible printed circuit board is configured to extend from the front edge of the circuit board to a direction substantially in parallel to the first optical axis, to be bent to a direction substantially in perpendicular to the circuit board to form a vertical portion, the vertical portion making the obtuse angle with respect to the first optical axis, to extend from a side of the vertical portion to form a connecting portion, and in the connecting portion, to be bent in a U-shaped cross section such that an end of the connecting portion is substantially in perpendicular to the second optical axis and substantially in parallel to the first optical axis.