A communication module includes a metal housing, a module connector provided at a front surface of the housing, and a light guide which guides light that has gone out from a LED lamp provided on a host board of a communication device and entered interior of a cage through a through hole provided in a bottom surface of the cage. The light guide includes a light incoming portion, a light outgoing portion, and a light guiding portion. The light incoming portion is disposed at a bottom surface of the housing opposed to the bottom surface of the cage, the light outgoing portion is disposed at aback surface of the housing opposed to the front surface, and the light guiding portion extends between the light incoming portion and the light outgoing portion along the bottom surface of the housing.

An optical module with an improved coupling portion to couple an optical device with an external fiber is disclosed. The coupling portion includes a stub to secure a coupling fiber in a center thereof, a bush to support the stub, a sleeve to receive the stub in a portion thereof and an external ferrule in another portion, and a sleeve cover to cover the sleeve. The coupling portion further includes a latch put between the bush and the cover by being hooked with both the bush and the cover. The latch electrically isolates the bush from the cover even when the bush and the sleeve cover are made of metal.

Systems, methods, and apparatus for a data bus-in-a-box (BiB) are disclosed. The system involves an electrical box, and at least one optical connector located on the box. The system further involves at least one mother board housed inside of the box, and comprising a transmit side comprising at least one transmit optical media converter (OMC) tile, and a receive side comprising at least one receive OMC tile. Also, the system involves first receive optical fibers that are each connected from at least one receive OMC tile to a receive coupler; and a second receive optical fiber connected from the receive coupler to one of the optical connectors. Further, the system involves first transmit optical fibers that are each connected from at least one transmit OMC tile to a transmit coupler; and a second transmit optical fiber connected from the transmit coupler to at least one of the optical connectors.

An optical module includes a housing including an optical interface, a circuit board module disposed in the housing, a fiber optic receptacle module disposed in the housing and including a plurality of fiber optic receptacles, an optoelectronic chip disposed in the housing and electrically connected to the circuit board module, a position limiting card disposed behind the fiber optic receptacle module, and a plurality of through holes arranged at the optical interface. The plurality of fiber optic receptacles are installed at the optical interface and fit through the plurality of through holes, and the position limiting card is fixed to the housing and locks the fiber optic receptacle module tightly against the optical interface.

A connector provided on a projector has an RF chip. A plug connected to the connector has an RF chip at a position opposite to the RF chip of the connector. When a protruding section of the plug is inserted and fit into an aperture section of the connector, the RF chip of the plug and the RF chip of the connector perform wireless communication with each other in a non-contact state. Thus, a connecting tool can be easily attached to/detached from a receiving tool without breaking a terminal due to contact such as in a case where a conventional contact type terminal is used.

An optical fiber attachment device has a slide receptacle having a slide space, and a sliding member provided slidably in the slide space. The sliding member has an installation component where the core wire of an optical fiber is held by a fiber holder, a pressure contact part is provided to the slide face of the slide receptacle in the slide space, and a corresponding pressure contact part is provided to the slide face of the sliding member in the slide space, and when the sliding member has slid in the slide space, the pressing force of the pressure contact part propagates through the corresponding pressure contact part to the sliding member side, and part of the sliding member is pressed from the slide receptacle side toward the installation component on the sliding member side.

A rotary encoder includes a rotor, a stator, and a casting compound. The casting compound has a first surface facing the stator. The first surface has a first predetermined shape and is fixed in relation to the stator. The casting compound has a second surface facing away from the stator, the second surface having a second predetermined shape.

An optical device for implementing passive alignment of parts and a method therefor, more particularly an optical device and a method therefor that utilize an alignment reference part arranged on the substrate to passively align an optical element part with a lens-optical fiber connection part. For the passive alignment of parts, connection pillars of an alignment reference part are coupled to substrate holes, one or more light-emitting elements and one or more light-receiving elements are aligned in a row in a particular interval with respect to alignment holes arranged opposite each other in the alignment reference part, a lens-optical fiber connection part is aligned with respect to the alignment holes, and an optical fiber is aligned with the optical alignment point at a surface of a prism forming a portion of the lens-optical fiber connection part.

An optical communications system and a pluggable optical communications module for use in the system are provided. The configuration of the pluggable optical communications module is such that no optical turn in any light path is required. Embodiments of the optical communications module include an EMI shielding solution and an electrical interface for electrically interfacing an electrical subassembly (ESA) of the module with a system printed circuit board (PCB) in a way that obviates the need for an optical turn.

A connector including a housing with a cable entry and a contact face presenting one or more conductors for signal transfer to associated conductors of a complementary connector. The connector includes a cable entry shield of an electro-conductive material gripping around the cable at the cable entry. The cable entry shield can for example be formed by a pin holder for holding alignment pins and the base of a locking device, jointly gripping around the cable.