US Patent 11789223 Optical transceiver module for optical transceiver and optical transceiver

An optical transceiver module includes a package containing a light receiving element, a light emitting element, and an optical modulator configured to modulate light that is output from the light emitting element, a rigid circuit board including a control circuit provided on the rigid circuit board, the control circuit being configured to control at least one of the light receiving element, the light emitting element, or the optical modulator, and a flexible circuit board including a plurality of signal wires, wherein the rigid circuit board is connected to the package via the flexible circuit board, with a first surface of the rigid circuit board facing a first surface of the package, and the at least one of the light receiving element, the light emitting element, or the optical modulator is electrically connected to the control circuit via the plurality of signal wires.