Patent ID: 8905652

Claim:
A circuit board assembly, comprising: a substrate; a first optical connector comprising: a first circuit board electrically connected to the substrate; at least one first laser diode and at least one first photodiode mounted on the first circuit board; and a first transparent shell mounted on the first circuit board, the first transparent shell comprising at least two first lenses, each of the at least one first laser diode and the at least one first photodiode being optically coupled with a respective one of the at least two first lenses; a second optical connector comprising: a second circuit board electrically connected to the substrate; at least one second laser diode and at least one second photodiode mounted on the second circuit board; and a second transparent shell mounted on the second circuit board, the second transparent shell comprising at least two second lenses, each of the at least one second laser diode and the at least one second photodiode being optically coupled with a respective one of the at least two second lenses; and at least two planar light wave circuits positioned on the substrate and arranged between the first transparent shell and the second transparent shell; wherein each first laser diode is optically coupled with a respective second photodiode through a respective first lens, a respective planar light wave circuit, and a respective second lens; each second laser diode is optically coupled with a respective first photodiode through a respective second lens, a respective planar light wave circuit, and a respective first lens; wherein each planar light wave circuit comprises a medium layer, an upper layer, and a lower layer; the medium layer is sandwiched and protected by the upper layer and the lower layer; two end surfaces of the medium layer respectively face a respective first lens and a respective second lens; wherein the first optical connector comprises two first laser diodes and two first photodiodes, the second optical connector comprises two second laser diodes and two second photodiodes, the number of the at least two planar light wave circuits is four; wherein the first transparent shell comprises four first lenses, and the second transparent shell comprises four second lenses.