Abstract: A right-angle optical-fiber connector assembly for providing an optical connection to an external device such as a circuit board. The connector assembly includes a rigid ferrule having at least one right-angle bend and that defines an interior region and first and second ferrule ends, and a maximum optical fiber bending radius RMAX. One or more bend-performance optical fibers traverse the interior region. Each optical fiber has an associated minimum bending radius RMIN and includes a bending radius RF such that RMIN?RF?RMAX, wherein at least one of the one or more optical fibers has RF=RMIN. The first and second connector ends are respectively located at or near the first and second ferrule ends and operably support the first and second optical fiber ends. The connector ends are each adapted to provide an external optical interconnection to an external device such as a circuit board.

Abstract: A fiber access terminal includes a drop cable side and a distribution cable side. The sides are separated by a frame to which a variety of cable management and cable connections components may be mounted. Optical fibers are routed from drop and distribution cables through a plurality of routing paths to splice trays for connection to other optical fibers. The terminal includes a base and a dome cover mounted to the base defining an enclosed interior. Passageways between the base and the dome cover are closed by removable covers to limit moisture and animals from accessing an interior of the dome cover. A tether connects the removable covers to the frame. The removable covers include one or more break out regions configured for being removed to receive one or more cables.

Abstract: The present invention provides a transceiver module having advantages of minimizing the number of optical parts by using an optical collimator to which a lens having the same shape as a diameter of an optical fiber is attached on a light input/output end. An transceiver module according to the present invention includes, laser diode for generating an optical signal to transmit, a first photodiode for controlling the laser diode, a second and third photodiodes for receiving an optical signal of a first and second wavelengths, and an optical collimator formed at a light input/output end. On the optical collimator, a lens having an optical fiber shape is attached in a direction the light proceeds.

Abstract: A daisy-chain optical interconnection technique provides connectivity among a plurality of circuit boards. A plurality of optical cables is connected between pairs of the circuit boards to form a ring. Optical connection matrices disposed on each circuit board accept the ends of the optical cables. The optical connection matrices include optical vias to connect selected ones of the optical paths between ends of the optical cables. Unselected ones of the optical paths are coupled to optical transmitters and optical receivers on each board.

Abstract: An optical interconnect assembly provides board to board interconnect in an electronic system. The optical interconnect assembly can include a plurality of optical fibers, having a connector disposed at the first ends, and a rigid optical mount disposed at the second ends. The rigid optical mount holds the optical fibers in alignment and in optical communication with a plurality of optical transducers mounted on the optical mount. Electrical contacts coupled to the optical transducers enable solder-attachment of one end of the optical interconnect assembly to a circuit board.

Abstract: There is provided an optical assembly and a method for assembling components of the optical assembly, the method comprising: providing a structure for guiding light; providing a plurality of optical fibers embedded in a fixed arrangement in the structure, the optical fibers for coupling the light from a coupling surface the structure; abutting a first package against the coupling surface, such that each one of multiple elements comprised in the first package is substantially aligned with each one of a first group of optical fibers in the plurality of optical fibers; and abutting a second package against the coupling surface, adjacent to the first package, and such that: the first and the second package are spaced apart by a gap; and each one of multiple elements comprised in the second package is substantially aligned with each one of a second group of optical fibers in the plurality of optical fibers, the gap providing a tolerance in a position of any one of: each one of the elements in the packages; the pac

Abstract: A photoelectric transforming connector for optical fibers capable of application to a compact mobile apparatus such as a mobile phone comprises: a plug having a first light emitting portion for transmitting a light signal and/or a first light receiving portion for receiving a light signal through an optical fiber; an MID having a second light receiving portion facing the first light emitting portion and transforming the light signal from the first light emitting portion to an electric signal and/or a second light emitting portion facing the first light receiving portion and transforming an electric signal to a light signal and transmitting it to the first light receiving portion; and a shell to which the plug and the MID are attached.

Abstract: A fiber optical connector release mechanism is disclosed. The fiber optical connector is incorporated in a cage assembly through a transceiver module. The front end of the transceiver module is disposed with a handle and a bail which is rotated to operate the release mechanism such that a pair of guiding tenons disposed at the inner wall are urged to push a pair of longitudinal guiding slots at the front end of the handle during the rotation process to move two rearward extending arms of the handle forward and in turn render wedge elements at its rear end disengaged from the snap engagement of the lock tabs due to the forward motion of the arms. Further, the locating structure of the arms and their corresponding slide paths is released from the locked state such that the transceiver module may be pulled out of the cage assembly.

Abstract: Plug-socket connector apparatus for optical fiber termination comprises first and second plugs and a socket. The first and second plugs are both single ferrule plugs. The socket is a molded interconnect device and a plug holder, and includes terminals located on the bottom face of the socket, first and second bores located at one side of the socket, and first and second retainers. The retainers retain latches formed in the plugs so as to prevent the plugs from falling out of the bores and to restrict rotation angles of the plugs around the axes within predetermined rotation angle ranges, when the plugs is plugged in the bores.

Abstract: An optical circuit board which facilitates a mounting process and provides advantageous aspects of electric interconnection and optical interconnection. An optical circuit board comprises a flexible circuit board composed of a film having a flexibility; one or more electric interconnections provided at the flexible circuit board; one or more optical interconnections provided at the flexible circuit board; an optical transmitter for converting an electric signal supplied at a designated electric interconnection of the electric interconnections provided at the flexible circuit board into an optical signal; and an optical receiver for reconverting the optical signal emitted by the designated electric interconnection provided at the flexible circuit board into an electric signal and for outputting the reconverted electric signal to another electric interconnection.

Abstract: An optical receiver includes a first light receiving element to convert an optical signal to an electric signal and to output the electric signal from one end. A light receiving element row is connected to the other end of the first light receiving element to supply electric power to the first light receiving element. The light receiving element row includes a plurality of second light receiving elements connected in series.

Abstract: Disclosed are various embodiments of systems, devices, components and methods for launching high-transmission-rate optical communication signals into legacy fiber optic cables. At least one aperture is provided on a proximal end of single-mode fiber optic stub so as to block or otherwise control the propagation of unwanted light into and through the stub. In one embodiment, a low-cost spheroidal lens is mounted between the optical transmitter and the proximal end of the fiber optic stub to focus and direct light emitted by the optical transmitter towards the fiber optic stub. The relatively broad light beam formed by the low-cost lens, in combination with the aperture, removes the requirement to precisely align the transmitter, lens and stub with one another, and further does away with the conventional requirement to attenuate the amount of signal power provided to the fiber optic stub.

Abstract: A high-throughput inspection system and method.

Abstract: One embodiment of the invention uses an MSM photodetector that is coupled to a relatively large core optical waveguide, e.g. an HCS fiber or a plastic optical fiber (POF). The MSM photodetector with its low capacitance enables high speed data transmission using large core optical waveguides.

Abstract: A transponder assembly for use with fiber optic digital communication cables having multiple parallel optic fiber elements. The transponder assembly features a transmitter port and receiver port for connection with separate parallel optic cables for separately transmitting and receiving data and an electrical connector for connecting with computer or communication systems. The transponder assembly includes a parallel optic transmitter module and a parallel optic receiver module having pluggable edge connectors. The assembly also includes a circuit board on which a semiconductor chip useful for signal processing and the electrical connector are mounted. A flex circuit is used in connecting the circuit board to the parallel optic modules. The semiconductor chip and electrical connector are mounted directly across from one another on opposite surfaces of the circuit board.

Abstract: One ferrule embodiment includes a number of optical fibers, an alignment fixture, and an encapsulating material. The alignment fixture has a number of apertures for placement of the ends of the number of optical fibers. The encapsulating material is formed around at least a portion of the number of optical fibers and at least a portion of the alignment fixture.

Abstract: A fiber optic communications cable for providing a short range, high speed data communications link between information system units, including an optical fiber with an integral housing at each end having an electrical connector extending from the housing and adapted to mate with a corresponding electrical connector on an external information system unit for transferring an information signal between the cable and the unit. A signal converter in the integral housing's converts the information signal between an electrical signal and a corresponding optical signal.

Abstract: An optical component package is disclosed. The package has a housing. The interior of the housing is adapted to house an optical component. The package includes at least two fiber optic connectors, each comprising an component side adapted to connect to the optical component and each having a pluggable exterior element. Each of the at least two fiber optic connectors are mounted in the housing with their component side accessible from the interior of the package and their pluggable exterior element accessible from the exterior.

Abstract: An optical transmitter relaxes the tolerance between a source assembly and a fiber receptacle to facilitate passive alignment. The source assembly includes a light source and a lens. The lens is held at a fixed distance away from the light source using precise support structures typically formed by photolithographic processes. The fiber receptacle includes an optical element. The fiber receptacle is adapted to hold an optical fiber at a fixed distance from the optical element. The lens substantially collimates light from the light source into the form of collimated light. The optical element focuses the collimated light onto the aperture of the optical fiber.

Abstract: A photoelectric composite connector comprises a first connector unit which is connected to optical transmission means and a second connector unit which can be attached to and detached from a first connector unit freely. The first connector unit comprises a photoelectric conversion module and an electrical connector section having a first conductor which is electrically connected to the photoelectric conversion module. The second connector unit is formed as an electrical connector unit corresponding to the electrical connector section of the first connector unit and having a second conductor. The first conductor of the electrical connector section of the first connector unit and the second conductor of the second connector unit are electrically connected to each other when the electrical connector section of the first connector unit and the second connector unit are connected to each other by use of their electrical connector structures.

Abstract: There is provided an optical module for coupling with a fiber optic cable through an optical connector, including a module body connectable with a plug of the optical connector by a dedicated guide pin, with a side surface of the module body being opposed to a mating surface of the connector plug at which an end face of the fiber optic cable is exposed, and an optical element mounted to the module body and having an optical axis brought into alignment with an optical axis of the fiber optic cable upon fitting of the guide pin into the module body and the connector plug.

Abstract: A fiber optic transceiver module having built-in test capability is packaged in a housing to meet small-form-factor (SFF) requirements. The module has a first optical fiber having an angled end that defines an acute angle relative to a longitudinal axis of the first optical fiber. A second optical fiber also has an angled end that defines an acute angle relative to the longitudinal axis of the second optical fiber. The first optical fiber and the second optical fiber are aligned with one another. An optical source emits an optical signal propagated along the first optical fiber in which a portion of the optical signal is received at the second optical fiber and is propagated along the second optical fiber. An optical detector receives a return optical signal transmitted through the angled end of the second optical fiber in response to reflection from a discontinuity in the optical path of the second optical fiber.

Abstract: An optical connector included a ferrule defining an optical axis and a holding member holding the ferrule. The ferrule includes a flange portion having a positioned portion. The holding member includes a first and a second beam portions faced to each other, a third beam portion adjacent to the first and the second beam portions, and a fourth beam portion faced to the third beam portion. At least one of the first and the second beam portions has elasticity. At least one of the third and the fourth beam portions has elasticity. At least one of the first and the second beam portions includes a contacting portion contacted with the flange portion in an optical axis direction and holding the ferrule. At least one of the third and the fourth beam portions includes a positioning portion engaged with the positioned portion to prevent the ferrule from being rotated.

Abstract: Information is obtained from a module received in a slot in a chassis. The information includes a number of ports in one or more module connectors which route at least one communication channel associated with a communication interfaces on the module. A determination is made as to the number of ports the slot has a capability to route the at least one communication channel to one or more backplanes in the chassis and to another module received in another slot in the chassis. A given number of ports in the one or more module connectors are enabled to forward data from the communication interface on the module and through the at least one communication channel to the other module based on the determination.

Abstract: The present invention provides an optical transceiver that enables to reduce the crosstalk from the optical transmitter to the optical receiver. The regenerator of the optical transceiver includes two main amplifiers, a selector, a selector control, and a re-shaper for shaping the receiving signal selected by the selector. The first main amplifier provides a first amplifier and a delay circuit connected in upstream to the first amplifier. The second main amplifier provides a second amplifier and a delay circuit connected in downstream to the second amplifier. The selector selects, based on the phase difference between the receiving signal Rx and the transmitting signal Tx, the output from the first main amplifier or that from the second main amplifier.

Abstract: An optical element used in a bidirectional optical communication module used for bidirectional optical fiber communication by a wavelength multiplex system, comprising a diffraction grating of binary structure prepared by molding, wherein a taper is formed at a portion of the diffraction grating where light entering the diffraction grating is intercepted by a convex part of the binary structure of the diffraction grating.

Abstract: The present invention is to provide an optical transceiver that installs a bi-directional optical sub-assembly. The bi-directional sub-assembly is installed within the transceiver and fixed by the holder with a pair of legs put the sub-assembly therebetween. By press-fitting these legs into respective pockets provided in the side of the transceiver, the sub-assembly is to be fixed with the housing. To press-fit the holder completes the fixing and the positioning of the sub-assembly at the same time.

Abstract: Provided are a method and structure for optical connection between an optical transmitter and an optical receiver. The method includes the steps of: forming on a substrate a light source device, an optical detection device, an optical transmission unit electrically connected with the light source device, and an optical detection unit electrically connected with the optical detection device; preparing a flexible optical transmission-connection medium to optically connect the light source device with the optical detection device; cutting the prepared optical transmission-connection medium and surface-finishing it; and connecting one end of the surface-finished optical transmission-connection medium with the light source device and the other end with the optical detection device. Fabrication of an optical package having a 3-dimensional structure is facilitated and fabrication time is reduced, thus improving productivity.

Abstract: An optical semiconductor module includes an optical semiconductor element; an optical fiber optically coupled with the semiconductor element; a base having an upper surface and a lower surface; and a package. The package has a bottom plate on which the base is mounted, a front wall having a hole through which the optical fiber is inserted, and a rear wall opposite to the front wall. The optical fiber and the optical semiconductor element are mounted on the upper surface. The base has a rear face formed on an end portion opposite to the front wall, and the rear face is positioned above the lower surface of the base.

Abstract: A device for forming an optical connection between an optoelectronic device and an optical fiber and for forming an electrical connection between the optoelectronic device and a substrate, a system including the device and materials, and methods of forming the device and system are disclosed. The device for forming an optical connection includes a—light transmission medium and electrical connectors, which are at least partially encapsulated. In addition, the device includes guide grooves configured to receive guide pins from a fiber ribbon connector, such that when the fiber ribbon connector is attached to the device, fibers of the ribbon align with the optoelectronic device via the light transmission medium.

Abstract: Optical transceivers have loopback and pass-through paths for diagnosing transceiver components and optical networks connected to the optical transceiver or for routing data out of the transceiver in a pass-through mode. The loopback paths are selectively configured so that a selected number of the components in the transceiver are included in the loopback path. Where more than one loopback path is present, a network administrator can select which components will be included in a particular test so that, depending on whether a signal is returned on the loopback path as intended, the network administrator can determine which components are operating correctly and which are faulty. The loopbacks can be configured to run on the electrical side of the transceiver from input port to output port or on the optical side from receiver to transmitter. The pass-through paths can be used to connect the transceiver to other devices.

Abstract: An optoelectronic module is seated onto a substrate connector by guiding the module along an initial path portion that is misaligned with respect to the mating direction defined by the substrate connector and further includes providing a positive pressure drive along an end path portion with sufficient force to secure the optoelectronic module to the substrate connector. Where the mating is via a pin-and-socket arrangement, the positive pressure drive requires sufficient force to push the main body of the module to ensure entry of the pins into the sockets. Typically, there is a conversion from force applied in one direction to module motion in the orthogonal direction. However, a rocking cam embodiment is also described.

Abstract: An optical connector according to the present invention including a connector body mounted on an optical module mounted on a circuit board, and a connector fixing member for pressing the connector body against the optical module. The connector fixing member can be engaged/disengaged with/from the circuit board, and thus the connector body can be attached/detached to/from the optical module.

Abstract: The present invention is to provide an optical transceiver that installs a bi-directional optical sub-assembly. The bi-directional sub-assembly is installed within the transceiver and fixed by the holder with a pair of legs put the sub-assembly therebetween. By press-fitting these legs into respective pockets provided in the side of the transceiver, the sub-assembly is to be fixed with the housing. To press-fit the holder completes the fixing and the positioning of the sub-assembly at the same time.

Abstract: Disclosed is a method of fabricating a molded structure including both micro lenses and metallic pins. The method comprises the steps of providing a mold apparatus having a set of first cavities and a set of second cavities, depositing a first material in the first cavities to form a set of metallic pins, and depositing a second material in the second cavities to form a set of micro lenses. The formed molded structure comprises a substrate, a set of molded microlenses on said substrate, and a set of molded metallic pins on that same substrate. The metallic pins may be formed as alignment pins or as electrical connectors. The invention enables the micro lenses and metallic pins to be manufactured by way of molding on a common substrate for the first time.

Abstract: A latch mechanism comprising a frame having an insertion axis therethrough. A first latch spring is disposed on the frame and is biased to an extended position. A handle is connected to the frame and is movable along the insertion axis between a first position and a second position. A first cam is disposed on the handle and moves the first latch spring to a retracted position as the handle moves toward the second position.

Abstract: An assembly comprises first connection units attached to a shelf and second connection units attached to cards, respectively. Each first connection unit holds at least one first optic fiber, while each second connection unit holds at least one second optic fiber. The first connection unit is connected to the second connection unit so that the first optic fiber is connected to the second optic fiber. Each first connection unit comprises a body and an optic connector. Each body is floatingly supported by the shelf. Each optic connector is floatingly supported by the corresponding body. The double floating-support structure allows “blind mate” connections between the first and the second connection units.

Abstract: A transmitting and receiving device, in which the received signal which is produced by the receiving device has only a small amount of crosstalk. This object is achieved by providing a transmitting and receiving device having a transmitting device for producing a transmission signal, a receiving device for producing a received signal, and a compensation device which is connected to the transmitting device and to the receiving device and which at least reduces any crosstalk which is produced by the transmitting device in the receiving device.

Abstract: A multichannel optical communication module includes: a board, and a signal-converting element having optical-action points aligned with a first pitch to emit and receive signal light. The element performs conversion between an optical signal and an electric signal at each of the optical-action points. The module further includes an optical waveguide that includes optical waveguide cores each having a first and a second optical-signal ends that are opposed to each other. The first optical-signal ends are aligned with the first pitch and optically connected to the respective optical-action points, while the second optical-signal ends are aligned with a second pitch longer than the first pitch. The module further includes a coupling component fixed on the board and coupling, to the module, an optical connector that holds ends of optical fibers aligned with a pitch equal to the second pitch, thereby optically connecting the second optical-signal ends to the optical fibers.

Abstract: According to embodiments of the present invention, an optical transponder includes a transmitter optical subassembly (TOSA). In one embodiment, the electrical ground of the TOSA may be DC-isolated from chassis ground of the transponder using a blocking capacitor that couples the AC signal path to VDD and that allows the case of the TOSA to float. In an alternative embodiment, the electrical ground of the TOSA may be DC-isolated from chassis ground of the transponder using a blocking capacitor that couples the AC signal path to VDD and a resistor that couples the DC bias level path to internal electrical ground or transponder case ground.

Abstract: A fiber optic connector insert for a connector may include a housing to be received within a passageway of a connector body, a circuit board extending longitudinally within the housing and having opposing first and second ends, and a first base and first electrically conductive pins carried thereby. The first electrically conductive pins may be coupled to the circuit board adjacent the first end thereof. The fiber optic connector insert may also include an opto-electronic (O/E) converter having a second base and second electrically conductive pins extending outwardly therefrom. The second electrically conductive pins may be coupled to the circuit board adjacent the second end thereof.

Abstract: Methods of aligning lens carriers and ferrules with alignment frames during assembly of optical cable connectors are disclosed. In one aspect, a method may include coupling an alignment frame with a circuit substrate, aligning a lens carrier with the alignment frame, and aligning a ferrule with the alignment frame. Other methods, apparatus, and systems incorporating the apparatus are also disclosed.

Abstract: A pluggable module, such as an optical transceiver for coupling an information system unit to a fiber optical cable, and adapted for mating with a receptacle having a retention tab on the bottom surface thereof, including a housing having a top and a bottom surface; a rotatable lever disposed on an optical connector end of the housing; a pusher element coupled to the rotatable lever and adapted to move parallel to the bottom surface when the lever is actuated; and a spring loaded latch extending from the bottom of the housing for engaging a cavity in the receptacle so as to secure the module in the receptacle, the pusher element engaging the spring loaded latch such that when the moveable lever is rotated in a direction away from the housing, the latch is retraced to enable the module to be released from the receptacle.

Abstract: An apparatus and system includes a radiation generation device for generating radiation and a radiation detection device. A first radiation channel is optically-coupled on a first end to the radiation generation device and configured to direct the radiation generated by the radiation generation device to a second end of the first radiation channel. A second radiation channel is optically-coupled on a first end to the radiation detection device and configured to direct radiation from a second end of the second radiation channel to the radiation detection device. An optical switch is configured to selectively interrupt the transmission of radiation from the second end of the first radiation channel to the second end of the second radiation channel.

Abstract: An active cable that is configured to communicate over much of its length using one or more optical fibers, and that includes an integrated electrical connector at at least one end. The active cable includes an integrated eye safety controls to thereby reduce the chance of injury should the active cable be severed, or otherwise unplugged at an optical end, if any. The cable may be an electrical to optical cable, and electrical to electrical cable, or one of many other potential configurations.

Abstract: An interface arrangement for opto-electronic data transfer which has an electrical plug connection part which includes at least one electrical contact used by a connected plug-in transceiver to provide information related to the data transfer rate at which the connected plug-in transceiver is able to transmit optical signals. An electrical control apparatus connected to this contact is used to set the data transfer rate of signals transferred from an electrical chip to a connected plug-in transceiver, the control apparatus taking several specified data transfer rates and setting that data transfer rate on the electrical chip which is the maximum at which a connected plug-in transceiver is able to transfer, provided that this data transfer rate is lower than the data transfer rate which has been set internally on the electrical chip. An opto-electronic transceiver which can be connected to an interface arrangement in plug-in fashion is also disclosed.

Abstract: A connector is disclosed that includes a housing and a module assembly disposed inside the housing. The module assembly includes a semiconductor element, a light receiving element, a light emitting element, a positioning plate in which a positioning hole is formed, a three-dimensional optical path component mounted on the positioning plate, and a printed circuit board on which the semiconductor element and the positioning plate are mounted. The three-dimensional optical path component includes a positioning pin and a projection. The light receiving element and the light emitting element are mounted on the positioning plate. The three-dimensional optical path component is positioned such that the positioning pin of the three-dimensional optical path component is fitted in the positioning hole formed in the positioning plate and the projection of the three-dimensional optical path component abuts an upper face of the positioning plate.

Abstract: The present invention provides an optical guide holding member having holding holes in which optical guides are fitted and held. The optical guide holding member has electric leads buried in a mounting surface on which the openings of the holding holes are opened. The electric leads are partly exposed on the mounting surface, and are also exposed on a side surface crossing the mounting surface. The optical semiconductor device is electrically connected to the exposed part of electric leads and is optically coupled with the optical guides.

Abstract: A novel flexible circuit board with heat dissipation ability is provided. The flexible circuit board includes a heat sink and a heat spreader having at least one circuit substrate mounted thereon. The heat spreader has a first lower surface and a first upper surface which has a plurality of first grooves formed thereon. At least one platform is formed between two adjacent ones of the first grooves for mounting the at least one circuit substrate. The heat sink has a second lower surface and a second upper surface which has a plurality of second grooves formed thereon and is connected to the first lower surface.

Abstract: A multiplexing optical system includes collimator lenses, a first condensing lens, a second condensing lens and an optical fiber. The collimator lenses collimate divergent laser beams that have been emitted from semiconductor lasers. The first condensing lens condenses laser beams transmitted through the collimator lenses in only one of a plane including the stripe width direction of the semiconductor lasers and a plane including a direction perpendicular to the stripe width direction. The second condensing lens condenses laser beams transmitted through the first condensing lens. The optical fiber is arranged in such a manner that the condensed laser beams enter the optical fiber. In the multiplexing optical system, an anamorphic lens is used as the second condensing lens, and the anamorphic lens condenses the laser beams in the two planes in cooperation with the first condensing lens.