Abstract: A serial electrical connector includes a connector plug and a connector jack. The connector plug includes an audio plug with a hollow cylindrical space formed in the center thereof; a coaxial cable being inserted into and filling the space; and an engagement element being disposed at a tip of the audio plug and configured to electrically connect the audio plug to the connector jack.

Abstract: An active optical cable connector plug includes: an electrical interface configured to connect to a first electronic device; an optical interface configured to connect to an optical cable, the optical cable being configured to connect to a second electronic device; an electrical-to-optical circuitry being connected with the electrical interface and the optical interface and configured to convert a received electrical signal to an optical signal; an optical-to-electrical circuitry being connected with the electrical interface and the optical interface and configured to convert a received optical signal to an electrical signal; a plug-in detection block being connected to the electrical interface and configured to detect the electrical properties of the first electronic device; a plug-in emulation block being connected to the electrical interface and configured to emulate the electrical properties of the second electronic device.

Abstract: A pluggable optical transceiver includes: a top housing; a bottom housing; and an optical-electrical assembly enclosed by the top housing and the bottom housing. The optical-electrical assembly includes a substrate; at least a transmitting optoelectronic component disposed on the substrate; at least a receiving optoelectronic component disposed on the substrate; interface integrated circuits disposed on the substrate; a pluggable electrical interface disposed on the substrate and electrically connected with the interface integrated circuits; and a coupling optical system.