Abstract:
A unitary retention piece or collar (20, 25, 32) is provided for mounting and retaining an optical fiber (10, 30) in an optoelectronic device (40). The collar (20, 25, 32) is cast or molded onto an optical fiber (10, 30) to provide a means for mounting the fiber (10, 30), typically on a semiconductor substrate, for alignment with other devices such as laser diodes and photodetectors. The collar (20, 25, 32) can be cast or molded onto the glass fiber (12) with coating (14) and buffer (16) layers in place, or a portion of the buffer layer (16) can be stripped off so that the molded collar (20, 25, 32) extends over both the buffered fiber and a portion of the stripped glass fiber (12). The collar (20, 25, 32) can be molded in any desired external shape for mating with a clip, retainer, socket, or housing to secure the fiber to the substrate or optoelectronic device package (40).
Abstract:
A universal submarine fiber-optic cable joint is provided with universal terminating sockets (10) for use with unarmored fiber-optic cables (1, 2). The device includes first and second universal terminating sockets (10) for terminating the strength members (6) of a first and a second fiber-optic cable respectively. The optic fibers (19) of the two cables (1, 2) are spliced together and are stored in a fiber storage tray that is positioned between the two terminating sockets (10). A cylindrical steel casing (12) encloses the fiber storage tray and is secured to the terminating sockets (10) by pins (13). The first and second universal terminating sockets (10) of the invention are interchangeable; either socket (10) can be secured to either end of the casing (12) by one or more pins (13).
Abstract:
This invention concerns a mounting for fastening an optical module, particularly of a sleeve for an optical connector on a board. A hollow-cased sleeve (1) of plastic is provided with mounting feet (5, 5') on a mounting wall (2). The mounting feet (5, 5') are formed as parallel segments (6) with each having at least one holding rib (7). At least one disconnecting slot (8) is situated between the mounting feet. The sleeve (1) can be snapped onto the board on the mounting feet. The disconnecting slot permits limited spreading of the mounting feet without damaging the sleeve.
Abstract:
The invention concerns an optical plug part and a method of producing the same. A cable end (4) with a cable sheath (6) and an optical waveguide (8) enters the rear region (3) of the plug part (1). One end (21) of a sleeve (20) with a through-aperture (23) holding the optical waveguide (8) is inserted into the cable sheath (6), its other end (22) opening into a through-duct (2). The optical waveguide (8) runs in an axially displaceable manner in the through-aperture (23) and the through-duct (2). The rear region of the plug part (1) is formed by direct extrusion-coating of the cable sheath (6).
Abstract:
A fiber optic connector comprising a plug and a receptacle uses the spring force supplied by bowing of the plug fiber to maintain a continuous compressive load at the fiber joint located in a fiber-alignment groove. The plug has a holder for securing the plug fiber and a shroud which snaps onto the holder with the plug fiber extending generally straight inside the shroud. The shroud has a slot providing access to the terminal portion of the plug fiber, and a sliding door which selectively covers the slot. The receptacle includes a housing and another fiber holder for securing the receptacle fiber, with a projection or finger attached to the receptacle fiber holder, the projection having the fiber-alignment groove. The finger is oriented within the receptacle housing such that, when the plug is inserted into the receptacle, the finger extends through the slot in the shroud at an oblique angle with respect to the plug axis. In this manner, as the plug is inserted, the end of the plug fiber slides into the fiber-alignment groove in the finger and comes into contact with the end face of the receptacle fiber. Continued insertion results in bowing of the plug fiber to achieve the compressive load. The plug door may have camming surfaces which are actuated by corresponding surfaces on a door of the receptacle. The connector may be used to simultaneously interconnect a plurality of fiber pairs, or to terminate a fiber to an active optical device.
Abstract:
The plug connector (1) comprises a pin (2), a helical spring (12) applying a rearward axial force to the pin (2) and a one-piece casing (20) with a closed front section (20a) and a through aperture (21). Behind the front section (20a) there is a side-wall aperture (24) through which the pin (2) fitted with the helical spring (12) can be inserted into the casing (20) from the side. Securing components (25, 26) prevent the pin (2) and/or the helical spring (12) from moving outwards radially from the plugging direction (A).
Abstract:
A device for use in the rotational alignment of non-symmetrical articles, such as non-cylindrically symmetrical optical elements which transmit and/or emit polarized light. In one embodiment, the current invention provides an optical fiber connector assembly which utilizes internal asymmetrical alignment features to optimize the rotational alignment of the polarization axes of an optical fiber element with respect to a rotational orientation-indicating reference on the connector.
Abstract:
A connector assembly for interconnecting optical and/or electrical conductors comprises first (1) and second (2) connector parts. Each connector part is provided with an alignment piece (3, 10) with alignment channels (4) for first and second conductors, respectively. Each conductor (11) includes a contact pad in the upper surface of the corresponding alignment piece. The first alignment piece (3) is provided with a reference slot (18) with straight first reference faces (13, 20) and the second alignment piece (10) is provided with a reference projection (28) with straight second reference faces (29, 30) which abuts the first reference face in the coupled position of the connector parts. The reference faces are located at an accurately determined location with respect to the guiding channels. The alignment pieces (3, 10) comprise a support plate (15, 25) and a guiding plate (16, 26) manufactured with very high accuracy. At least the ends of the guiding channels are formed in the guiding plate. The reference slot and the reference projection, respectively, are part of the guiding plate.
Abstract:
The invention concerns a plug-type connector for the end of a fibre-optic cable (1) comprising at least one optical fibre (3) surrounded by a sheath (2), a strand-type strain-relief element (4) and cable sheathing (5), the connector having a pin (10) and a pin-holder (12) which are mounted in a casing (18) so that they can move longitudinally. The casing (18) has an aperture (25) in which the end (32) of the strain-relief element (4) can be fixed by adhesive bonding and/or by sealing without affecting the mobility of the optical-fibre sheath (2).
Abstract:
Coupling end-pieces (20, 21) with axial bores (22, 23) are mounted in a separate front part (25). A cable end (3) with two optical fibres (8, 9) is fixed in a main part (1). The ends (10, 11) of the fibres project over the front part and extend parallel to each other in the axial direction at a distance (29) from the axial bores (22, 23). The front part (25) can slide perpendicularly to the ends (10, 11) of the fibres in order to allow alignment of the axial bores (22, 23) with the ends (10, 11) of the fibres.