Patent ID: 6893166

Claim:
A factory-settable optical subassembly for receiving a ferrule-held optical fiber, for use in an optical transceiver module, comprising: an optoelectronic converter having an opening for passage of light; a top can element attachable to the optoelectronic converter and having a first through hole and a second through hole, the first through hole and the second through hole being in communication with each other; and a positioning element having a third through hole and the positioning element being received in the second through hole; wherein the first through hole, the second through hole, the third through hole and the opening of the optoelectronic converter are arranged coaxially, and the positioning element can be moved along the axis of the second through hole and fixed in position such that, when the ferrule-held optical fiber is received through the first through hole and abuts against the positioning element, an end of the optical fiber will be at a proper focal distance from the optoelectronic converter to transmit a desired wavelength of light emitted by the optoelectronic converter at a maximum efficiency.