Abstract: Optical connections for optical communication having in-line optical paths and magnetic coupling portions are disclosed. In one embodiment, an optical connection includes a lens block having an optical interface portion that defines an in-line optical path without an optical turn for optical signals propagating through the lens block, and a magnetic coupling portion disposed about at least a portion of the lens block. In another embodiment, a method of making an optical connection that includes providing a circuit board having one or more active components and placing a lens block on the circuit board. The lens block includes an optical interface portion defining an in-line optical path. The method further includes placing at least one magnetic coupling portion about the lens block. The at least one magnetic coupling portion is configured as a bulk magnetic material. Electronic devices and fiber optic cable assemblies are also disclosed.

Abstract: The present invention provides a switch device for an optical signal which has high extendibility and which can suppress an increase of loss in extension. A switch device in one embodiment of the present invention includes, in a housing, four splitter portions, four switch portions, and extension splitter portions. The splitter portions are connected to path-side ports, the switch portions are connected to client-side ports, and the splitter portions and the switch portions are connected to one another via shuffle fiber arrays. One ends of the extension splitter portions are connected to path-side extension ports, and the other ends thereof are connected to client-side extension ports. The number of wavelengths processable by the switch device can be easily changed by changing a connection state of optical fibers to the path-side ports, the client-side ports, the path-side extension ports, and the client-side extension ports.

Abstract: A plug part for a plug-in connection, in particular of optical conductors, includes a plug housing, in which a plug insert having at least one plug pin for receiving a conductor is arranged. The plug part can be inserted into a correspondingly designed socket part in an insertion direction (A), and includes a locking means for releasably locking the plug part in the socket part. The plug part further has an unlocking means, by means of which the locking of the locking means to the socket part can be released. The plug part includes a protective apparatus for protecting the end face of the plug pin and for moving from a closed position with a covered end face to an open position with an exposed end face by inserting the plug part into the socket part by interacting with the socket part.

Abstract: The present invention generally relates to the field of fiber optics, and more particularly, to apparatuses, systems, and methods directed towards improving effective modal bandwidth within a fiber optic communication environment. In an embodiment, a multimode optical fiber in accordance with the present invention comprises a core and cladding material system where the refractive indices of the core and cladding are selected to modify the shape of the profile dispersion parameter, y, as a function of wavelength in such a way that the alpha parameter (?-parameter), which defines the refractive index profile, produces negative relative group delays over a broad range of wavelengths. The new shape of the profile dispersion parameter departs from traditional fibers where the profile dispersion parameter monotonically decreases around the selected wavelength that maximizes the effective modal bandwidth (EMB).

Abstract: An opto-electric hybrid board according to the present invention includes a substrate including an insulation layer and a metal reinforcement layer. An electric circuit part is provided on the front surface of the substrate, and an optical waveguide part is provided on the back surface thereof. The metal reinforcement layer includes an optical coupling through hole and an alignment through hole. The electric circuit part includes an electrical interconnect line, an optical element, a first alignment mark for positioning of a mirror part, and a second alignment mark for positioning of the optical element. The mirror part of the optical waveguide part is positioned with respect to the first alignment mark visually recognized through the alignment through hole, and the optical element of the electric circuit part is positioned with respect to the second alignment mark.

Abstract: An optical fiber connector includes a fiber fixing unit configured for holding the optical fiber, a ferrule configured for receiving an end of the optical fiber, and a housing receiving and connected to the fiber fixing unit and the ferrule. The housing includes side walls, the side walls cooperatively form an end surface adjacent to the fiber fixing unit, the side walls define two opposite releasing slots, the releasing slots penetrate through the side walls along a direction parallel to the end surface and are open at the end surface.

Abstract: An optical waveguide, such as an optical fiber, which relies on a mechanism involving scattering in random structures to confine light to a region of the waveguide and allow propagation of electromagnetic radiation along the length of the waveguide includes an optically transmissive body having a length and a cross-section transverse to the length, wherein the optically transmissive body has refractive indices that are cross-sectionally random and substantially invariant along the length direction of the waveguide.

Abstract: In a sealing structure of optical communication module using a sealing material, it has been difficult to secure the reliability without influencing optical fiber characteristics. A sealing structure of optical communication module of the present invention comprises: a cylindrical barrel unit fixed to a package; a cylindrical flange which is disposed inside the barrel unit and through which an optical fiber pierces; and a sealing material disposed between the barrel unit and the flange, wherein the flange has on its surface a plurality of regions having different surface conditions, and the sealing material is disposed in only one of the regions.

Abstract: An optoelectronic assembly includes a printed circuit board (PCB) defining opposite upper and lower surfaces, and equipped, on the upper surface, with an active component and an Integrated Circuit (IC) linked to each other via the flip chip technology, a lens module located on the side of the lower surface and communicating with the active component through via holes in the PCB, and a fiber assembly located in the lens module to be optically coupled to the active component via said lens module.

Abstract: Forming an optical device includes growing an electro-absorption medium in a variety of different regions on a base of a device precursor. The regions include a component region and the regions are selected so as to achieve a particular chemical composition for the electro-absorption medium included in the component region. An optical component is formed on the device precursor such that the optical component includes at least a portion of the electro-absorption medium from the component region. Light signals are guided through the electro-absorption medium from the component region during operation of the component.

Abstract: A method for aligning a ferrule-mounted optical fiber with the optical axis of an electro-optical device, including the following steps: providing an alignment marking with respect to the device in relation to the optical axis; providing an annular receptacle and a tubular alignment pin with a central passageway, having its proximal end slidably fitted in the annulus of the receptacle; aligning the proximal end of the alignment pin with the alignment marking; securing the device to the receptacle; removing the alignment pin from the receptacle; and inserting the ferrule-mounted optical fiber into the receptacle.

Abstract: An optical transducer is provided. A “measuring” portion of the transducer may be exposed to a high pressure and fluids when the optical transducer is deployed (e.g., in a wellbore or other industrial setting). The transducer may include an optical waveguide with a first portion that forms a first seal that isolates an “instrumentation” portion of the transducer from exposure to the high pressure and fluids to which the measuring portion may be exposed. The transducer may also include a second seal with a “stack” of material elements that contact a second portion of the optical waveguide to also isolate the instrumentation portion of the transducer from exposure to the high pressure and fluids to which the measuring portion may be exposed.

Abstract: An apparatus includes a polymer waveguide element disposed on a circuit board and having a waveguide core between a first outer reference waveguide core and a second reference waveguide core having top and side exposed surfaces and defining opposing outer edges of the polymer waveguide element. A ferrule mount element optically couples the polymer waveguide element to an optical element through the circuit board. The ferrule mount includes two tapered features that mate with and form an interference fit with the exposed side surfaces of the first outer reference waveguide core and second outer reference waveguide core.

Abstract: A device and a system may facilitate access to communication connectors, adapters, and/or ports that are supported within a housing, e.g., a rack or cabinet. The system may include one or more of the devices. The system may also include a device that manages, e.g., guides and supports cables that are operatively coupled to the connectors, adapters, and/or ports. The ports may be on a tray that is engaged with the housing. A retainer arm may have first end, and a second end pivotably coupled to the tray. A cable retainer may be coupled to the retainer arm. An actuation mechanism may operably couple the tray to the retainer arm. The actuation mechanism may be configured to move the cable retainer from a first position over the tray to a second position extending beyond a side of the tray as the tray is pulled out of the housing.

Abstract: An optical fiber connector includes a collar body with a defined interior space extending from a first end to a second end, a backbone with a main body portion and a cover portion extending from the main body portion, the backbone having a defined interior space extending from a first end to a second end, and a boot with a defined interior space extending from a first end to a second end, a portion of the defined interior space including a convex interior wall. The collar body is inserted into at least a portion of the backbone defined space and the backbone is inserted into at least a portion of the boot defined space. The boot interior wall is configured to resist against the backbone cover portion to clamp an optical fiber in the backbone main body portion.

Abstract: A photonic waveguide structure may include a tapered photonic waveguide structure within a photonic substrate, such that the tapered photonic waveguide structure has a tapered region that progressively tapers in width along a longitudinal length of the tapered photonic waveguide structure. The photonic waveguide structure also includes an optical fiber waveguide having a core region and a cladding region, whereby a portion of the core region is partially exposed by removing a portion of the cladding region. An outer surface of the portion of the core region that is partially exposed is substantially coupled to the tapered photonic waveguide structure. An optical signal propagating along the tapered photonic waveguide structure is coupled from the tapered region of the tapered photonic waveguide structure to the core region of the optical fiber waveguide via the core region that is partially exposed.

Abstract: An optical manipulator includes a first section for propagating an optical signal with multiple polarization modes including a transverse electric (TE) mode and a transverse magnetic (TM) mode and a second section for propagating separately the TE mode and the TM mode of the optical signal. The optical manipulator also includes a multi-mode interference (MMI) section having a groove with a first refractive index less than a second refractive index of the MMI section. The groove extends along an entire length of the MMI section to partition the MMI section into two connected channels including a first channel and a second channel. The first section is connected to the first channel and the second section is connected to both the first and the second channels.

Abstract: A coated glass fiber 1 comprising a glass fiber 10 and one or more coating layers each composed of an ultraviolet curable resin on the outer circumference of the glass fiber 10, wherein the ultraviolet curable resin constituting at least one of the coating layers is formed of an ultraviolet curable coating material containing a silane coupling agent and a photoacid generator. The coated optical fiber 1 coated optical fiber having a high dynamic fatigue coefficient since adhesion between the surface of the glass fiber and the resin coating layer is satisfactory.

Abstract: A connector device for a fiber optic cable. The connector device includes a housing assembly (5, 25, 31) arranged to house a section of a fiber optic cable (9); a first fiber optic connector (47) including a body (48) that is arranged to receive a first optical fiber; a second fiber optic connector (49) including a body (50) that is arranged to receive a second optical fiber; and attachment mechanism (41, 65) for releasably attaching each of the first and second fiber optic connectors (47, 49) to the housing assembly (5, 25, 31). A fiber optic connector assembly (1) and a method for changing the polarity of first and second optical fibers in a fiber optic cable assembly (1) are also disclosed.

Abstract: A sensor for measuring flow speed of a fluid, comprising: a light-absorbing optical fiber having a fiber Bragg grating inscribed in the fiber; wherein light is emitted into the light-absorbing optical fiber to heat the optical fiber and the fiber Bragg grating, and when the fluid passes over the sensor, the flow speed of the fluid is determined by the rate of heat loss from the sensor, and the temperature of the sensor is determined from the wavelength shift of the central wavelength of the fiber Bragg grating.