Abstract: The present invention discloses an optical module which includes a circuit board, a wire end connector, a board end connector and a sealing cover. The board end connector has a reflective interface and is fixed on the circuit board. The wire end connector is connected with the board end connector. The sealing cover is disposed over the circuit board and covers at least a portion of the board end connector and at least a portion of the wire end connector. The reflective interface on the board end connector is completely accommodated in the sealing cover. End faces of the sealing cover are sealed. The disclosed optical module is easily sealed, requires a small amount of sealant and is reworkable.

Abstract: Optical switch control circuit for optical network protection. In an exemplary embodiment, an apparatus includes a latching optical switch that routes signals in an optical network. The apparatus also includes a switch control circuit coupled to the latching optical switch. The switch control circuit controls the latching optical switch to selectively operate in a latching mode or in a non-latching mode based on a received command and a network power state. A method is disclosed that includes receiving a command that indicates how optical signals are to be routed by a latching optical switch, and determining a resulting routing state based on a current routing state, the command, and a power state. The method also includes controlling the latching optical switch to operates in the resulting routing state such that the latching optical switch selectively operates in a latching mode or in a non-latching mode.