Abstract: An optical sub-assembly module and a cap thereof are provided. Two opposite ends of the cap are respectively defined as a light source end and a connecting end. The cap includes a receiving groove, a longitudinal groove, a lens structure and a plurality of pillar structures. The receiving groove is recessed inwardly from the light source end. The longitudinal groove is recessed inwardly from the connecting end. The lens structure is integrally formed with the cap, the lens structure is located between the receiving groove and the longitudinal groove, and the lens structure blocks spatial communication between the receiving groove and the longitudinal groove. Each of the pillar structures is connected to an inner wall that surrounds the receiving groove.

Abstract: A small form-factor pluggable (SFP) transceiver is provided for being inserted into an electrical connection slot of an electronic apparatus. The SFP transceiver includes a housing, two electrical signal connectors disposed a front end of the housing, and an unlocking assembly having an unlocking member and an interlock member. The housing includes an engaging portion disposed on a bottom surface thereof and configured to be engaged with the electrical connection slot, thereby firmly fastening the SFP transceiver into the electrical connection slot. The unlocking member has a manipulating portion exposed at the front end and arranged adjacent to a top surface of the housing. The interlock member is movably disposed on the housing. When the manipulating portion is rotated in a direction away from the front end and the top surface, the unlocking member moves the interlock member to separate the engaging portion from the electrical connection slot.

Abstract: A small form-factor pluggable transceiver includes a housing, which includes an upper cover, a lower cover fastened to the upper cover, and a front plate arranged between an end of the upper cover and an end of the lower cover. The front plate, the upper cover, and the lower cover are assembled together so as to jointly define an accommodating space. The front plate includes a metallic layer defining a main surface thereof and two plastic structures connected to the metallic layer. The front plate has two through holes penetrating through the metallic layer for respectively accommodating two electrical signal connectors, and the two plastic structures are respectively arranged in the two through holes. When the two electrical signal connectors are respectively disposed in the two through holes, the plastic structures are arranged between the metallic layer and the electrical signal connectors separated from the metallic layer.

Abstract: A small form-factor pluggable (SFP) transceiver provided for being inserted into an electrical connection slot includes a housing, two electrical signal connectors, a circuit board, and two flexible assemblies. The housing defines an accommodating space. Each electrical signal connector has an inserting end arranged outside a front end of the housing and an opposite connecting end arranged in the accommodating space. The circuit board is fixed to the housing and is arranged in the accommodating space. Each flexible assembly has an end detachably connected to the circuit board and an opposite end detachably connected to the respective electrical signal connector. The SFP transceiver is configured to receive a signal, and the signal travels from the each electrical signal connector to the circuit board through the corresponding flexible assembly. Each flexible assembly, the corresponding electrical signal connector, and the circuit board are configured to be independently tested.

Abstract: A receptacle-type bi-directional optical module includes an optical connector, a bi-directional optical sub-assembly (BOSA), and a flexible printed circuit board. The bi-directional optical sub-assembly is detachably coupled to the optical connector. The bi-directional optical sub-assembly includes a transmitter end and a receiver end. The flexible printed circuit board includes a board body, a first connection part, and a second connection part. A first end of the board body is electrically connected to a printed circuit board. The first connection part is connected to a second end of the board body for electrically connecting to the transmitter end. The second connection part is connected to the edge of the first connection part for electrically connecting to the receiver end.

Abstract: A dustproof and pluggable transceiver includes a transceiver body, a first cover and a first rebounding member. The transceiver body on which the first cover is pivoted has a first opening, and the first rebounding member has a first end coupled with the transceiver body and a second end coupled with the first cover for providing a rebounding force to return the first cover to shelter the first opening so that dust-proofing is achieved. Through a driving member which is coupled with a direction-changing mechanism and pivoted on the first cover, and a pushing block coupled with the direction-changing mechanism, removal of the transceiver is controlled by the first cover.

Abstract: A dustproof transceiver includes a transceiver body, a first dustproof cover and a second dustproof cover. The transceiver body has an opening to receive an optical fiber connector. The first dustproof cover is pivotally connected on the transceiver body to swivel and shelter a part of the opening. The second dustproof cover slides on the transceiver body to shelter the remaining part of the opening. A spring is secured to the transceiver body at one end and secured to the second dustproof cover at an opposite end. A rebounding member has two spiral springs, two securing ends and a securing section linking the two spiral springs. The two securing ends are respectively coupled to the transceiver body and the securing section is coupled to the first dustproof cover such that the rebounding member exerts a force on the first dustproof cover to shelter the part of the opening.

Abstract: A dustproof transceiver includes a transceiver body, a first dustproof cover and a second dustproof cover. The transceiver body has an opening to receive an optical fiber connector. The first dustproof cover is pivotally connected on the transceiver body to swivel and shelter a part of the opening. The second dustproof cover slides on the transceiver body to shelter the remaining part of the opening. A spring is secured to the transceiver body at one end and secured to the second dustproof cover at an opposite end. A rebounding member has two spiral springs, two securing ends and a securing section linking the two spiral springs. The two securing ends are respectively coupled to the transceiver body and the securing section is coupled to the first dustproof cover such that the rebounding member exerts a force on the first dustproof cover to shelter the part of the opening.