Abstract:
In a small-sized optical module, opposite side surfaces of a collimator lens (2) and opposite side surfaces of a polarization compensating filter (5) are fixed to opposite side surfaces of a rectangular frame (4). Two open surfaces are provided in the rectangular frame (4), so that optical components can be finely adjusted easily, and a large number of small-sized optical components can be aligned and assembled accurately. Reinforcing members (6) are provided in the open surfaces of the rectangular frame (4) so that the shape of the rectangular frame (4) can be retained against external force. After a diffraction grating (3) is fixed to the reinforcing members (6), the reinforcing members (6) with the diffraction grating (3) are adjusted, aligned and fixed to the rectangular frame (4).
Abstract:
A coupler to interconnect or couple optical fibers together and position ends of the optical fibers juxtaposed with each other, additionally includes a captive split tubular alignment sleeve to accept ferrules on ends of optical fibers to be aligned and coupled. The coupler may be incorporated into an opto-electronic module, captured, and then held against normal forces of connecting and disconnecting the optical fiber. A short optical fiber extends from the coupler through a wall of an enclosure and is terminated adjacent an opto-electronic device to carry optical signals for transmission or reception of optical signals. This coupler may be further used to splice or interconnect optical fibers, in temporary connections or splices, without fusing the glass of the fibers.
Abstract:
A connector and cable provide a two dimensional array of optical channels for interconnecting electronic circuits using a two-dimensional, integrated circuit array of emitter and/or detector elements affixed to the fiber bundle, an ASIC substrate including drive circuitry electrically connected to the array and adapted to drive emitter elements and/or sense detector elements within the array, fanout circuitry associated with the ASIC substrate and drive circuitry for spatially separating the electrical signal channels, and an electrical connector means connected to the fanout circuitry. Applications include all manner of interconnecting circuit boards or similar components within a single system or between systems.
Abstract:
The invention in the simplest form is a low-profile optical waveguide assembly for interfacing a two-dimensional optoelectronic array to standard fiber bundles. The present invention serves both to bend light and fan out light-carrying guides and to transition from the optoelectronic array pitch to an industry standard pitch for connectorization. There are several embodiments considered herein, however the preferred embodiments are for an optical waveguide assembly that includes a waveguide housing supporting a plurality of waveguide sheets, each sheet includes an array of waveguides feeding a plurality of industry standard ferrules.
Abstract:
A structure for connecting an optical device to an electrical device includes an assembly. At least one electrical connection connects the assembly to at least one transmission line. The distance (or length) of the electrical connection is less than approximately one-fourth of a wavelength of a signal traversing the electrical connection. The present invention fosters also impedance matching between the optical device and the transmission lines.
Abstract:
A bracket for mounting an optical component to a circuit board. The bracket comprises a bracket body member having a board contacting surface extending in a first plane defined along its board contacting side. A component mount is defined along the body member with a termination surface extending adjacent the board contacting side in a plane recessed from the first plane.
Abstract:
An opto-electric apparatus includes a circuit board, an opto-electric converter module with a plurality of electrical leads, a holder rigidly holding the opto-electric converter module, and a connection structure. The holder is rigidly fixed to the circuit board, and the connection structure is rigidly connected to the holder. The leads of the module protrude into holes in the structure. The structure electrically connects the circuit board to the leads.
Abstract:
A method for testing the reliability of fiber-optic laser modules by determining the change in position over time of the focal point of the fiber tip relative to the laser, wherein the coupling efficiency and influence coefficients of the laser module are used to determine whether the focal point of the fiber tip is moving relative to the laser at an unacceptable rate of displacement such that the laser module is likely to malfunction and is therefore unacceptable for use.
Abstract:
In an optical interconnection module used for data communication, or the like, a semiconductor laser for emitting laser light and a photodiode for monitoring irradiation of the light by the laser are fixed on a first mounting base member made of a single crystalline silicon. An optical fiber is held on a V-shaped groove on the first mounting base member for facing the light emitting layer of the laser. At least a gap between the laser and the optical fiber is filled by a transparent resin having a refractive index equal to or larger than that of the optical fiber but smaller than the light wave guide layer of the laser. The transparent resin portion is further covered by non-transparent resin. The first mounting base member is fixed on a second mounting base member made of ceramic material having thermal expansion coefficient larger than that of the first mounting base but smaller than a circuit substrate made of epoxy resin.
Abstract:
A support assembly for retaining a laser module of the type having a solid state laser, an optical connector and an optical fiber extending between the laser and the optical connector. The support assembly includes a baseplate having a top surface and a bottom surface. A removable spool extends upwardly from the top surface of the baseplate, wherein the spool is sized to have the optical fiber wound therearound. A laser receptacle disposed on the top surface of the baseplate. The laser receptacle is sized to receive the solid state laser in a first predetermined position and orientation. A connector holder is also disposed on the top surface of the baseplate. The connector holder receives and retains the optical connector at a second predetermined position and orientation. As a result, the support assembly retains the solid state laser and the optical connector at known positions that are suitable for automated testing, while the spool retains the optical fiber in a neatly wound condition during the automated testing procedures.