Abstract: The invention relates to a light device that generates uniform light beam over a panel. A light device includes a light source and a light panel. The light panel includes: a lightguide that has an input port for receiving light from the light source, the input port is formed on a bottom surface of the lightguide; a beam reflector disposed on a top surface of the lightguide, the beam reflector reflects a portion of the light; a mirror disposed on the bottom surface of the lightguide, the mirror reflects a portion of the light toward the top surface; and a plurality of light scattering features disposed on the bottom surface of the lightguide, the plurality of light scattering features reflects a portion of the light toward the top surface.

Abstract: Disclosed is an optical connector fastened to an adapter which is reinforced by securing a buffering space to make the optical connector moveable so as not to generate a light loss even when receiving an external force so that the optical connector is not easily detached from the adapter compared to a conventional one. The optical fiber connector includes: a boot with a connection hole for supporting the optical fiber; and a ferrule part connected to the connection hole of the boot for resiliently supporting a ferrule connected to the optical fiber, the ferrule part being separated from the boot when receiving an external force, wherein the ferrule part is provided with a protuberance for fastening to the connection hole of the boot, and the protuberance is formed smaller than the length of the inner peripheral surface of the connection hole so as to be moved in the connection hole.

Abstract: A delay line interferometer comprising an optical waveguide having a distributed Bragg reflector, e.g. Bragg grating, fabricated therein. The distributed Bragg reflector has a refractive index modulation with a period variation ?(z) along its length z that is arranged to output in transmission an output optical signal fout(t) in response to a input optical signal fin(t), wherein the output optical signal fout(t) is the result of temporal interference between one or more time-delayed replicas of the input optical signal fin(t). In other words, the distributed Bragg reflector is operable to generate and permit temporal interference between two or more time-delayed replicas of the input optical signal fin(t). The invention may thus mimic the behaviour of one or more MZIs.

Abstract: A wavelength division multiplexing filter and methods of forming the same include an optical dielectric filter formed on a substrate and having a plurality of dielectric layers. The optical dielectric filter has a high reflectivity at a first wavelength and a high transmissivity at one or more additional wavelengths. The substrate has a high thermal tolerance, such that the substrate is not damaged by temperatures at which the plurality of dielectric layers are formed.

Abstract: A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 or more LP modes for transmission of a spatially-multiplexed optical signal. Undesired modes have respective effective indices that are close to, or less than, the cladding index so as to result in leakage of the undesired modes into the outer cladding. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.

Abstract: The present invention relates to a nuclear power plant cable including: conductors; at least one or more insulation layers adapted to correspondingly surround the conductors; a sheath adapted to surround the insulation layers; and monitoring means adapted to monitor the states of the insulation layers or the state of the sheath in real time.

Abstract: A multi-chip module (MCM) includes: an interposer, a photonic chip, an optical gain chip, and a waveguide-fiber connector. The photonic chip, which may be electrically coupled to the interposer, may be implemented using a silicon-on-insulator (SOI) technology, and may include an optical waveguide that conveys an optical signal. Moreover, the optical gain chip, which may be electrically coupled to the interposer, may include a III-V compound semiconductor, and may include a second optical waveguide that conveys the optical signal and that is vertically aligned with the optical waveguide relative to a top surface of the interposer. Furthermore, the waveguide-fiber connector may be mechanically coupled to the interposer, and remateably mechanically coupled to an optical fiber coupler that includes the optical fiber. The waveguide-fiber connector may convey the optical signal between the optical waveguide in the photonic chip and the optical fiber.

Abstract: A fiber coupling module comprises an optical fiber connector detachable from an optical fiber cable, wherein an end surface of the optical fiber cable is treated with an anti-reflection coat to set the reflectance lower than a predetermined value relative to the light of a first wavelength band and to set the reflectance higher than a predetermined value relative to the light of a second wavelength band excluding the first wavelength band, and the fiber coupling module connects to the optical fiber cable through said optical fiber connector. A main light source outputs the light of the first wavelength band to the optical fiber cable. An aiming light source outputs the light of the second wavelength band to the optical fiber cable. A detection element that detects the connection status of the optical fiber cable to the optical fiber connector based on the light of the second wavelength band reflected from the end surface of the optical fiber cable.

Abstract: A high efficiency optical combiner minimizes core region distortions in the area where fusion splicing between an input tapered fiber bundle (or any other type of “cladding-less” input fiber) and output fiber are joined. The thickness of the output fiber's glass cladding layer in the splice region is reduced (if not removed altogether) so that a core-to-core splice is formed and any necked-down region where the glass flows to join the core regions (while also joining the outer diameters) is essentially eliminated. The reduction of distortions in the core region of the splice improves the transmission efficiency between an input tapered fiber bundle and output fiber, reaching a level of about 99%. This high efficiency optical combiner is particularly well-suited for applications where a number of pump sources are combined and applied as an input to a fiber laser or amplifier.

Abstract: An expanded beam (EB) optical connector. In some embodiments, the EB optical connector includes: a rigid, hollow, straight contact tube having a centerline axis; and a collimator assembly having an optical axis and comprising an optical fiber and a collimating lens, wherein the centerline axis of the contact tube is at least substantially aligned with the optical axis such that collimated light produced by the lens from light exiting the fiber travels though the contact tube and the loss of light caused by misalignment of the axes is not more than 2 dB.

Abstract: A novel panel-mountable fiber optic cable feedthrough is described that has two main body parts that can be brought together around a fiber optic cable and secured in place to prevent slippage of the cable. Use of two such main body parts that split along a plane that passes through the axis of the fiber optic cable allows joining the two main parts at any position along the cable without the need to thread the cable through a pre-formed cylindrical cavity in the body of the feedthrough. The main parts for this fiber optic feedthrough can be made by plastic injection molding suitably shaped to relieve bending strain in the glass optical fiber(s) within the cable. The foot-print for mounting such a feedthrough can be made compatible with that of a number of popular fiber optic connector mounts, including the SC-connector.

Abstract: An optical cable assembly is provided. The cable assembly includes a plurality of subunits surrounded by an outer cable jacket, a furcation unit and optical connectors coupled to the end of each of the subunits. Each of the subunits includes an inner jacket, a plurality of optical fibers; and a tensile strength element. The first tensile strength element and the inner jackets of each subunits are coupled to the furcation unit, and the optical fibers and tensile strength elements of each subunit extend through the furcation unit without being coupled to the furcation unit. The subunit tensile strength element and optical fibers of each subunit are balanced such that both experience axial loading applied to the assembly and, under various loading conditions, the compression of the subunits is controlled and/or the axial loading of the optical fibers is limited to allow proper function of the optical connector.

Abstract: The invention concerns a multimode optical fiber, with a graded-index core co-doped with at least fluorine F and germanium GeO2 and a refractive index profile with at least two ?-values. According to the invention, the concentration of fluorine F at the core center ([F]r=0) is between 0 and 3 wt % and the concentration of fluorine F at the core outer radius ([F]r=a) is between 0.5 wt % and 5.5 wt %, with [F]r=a?[F]r=>0.4 wt %. For wavelengths comprised between 850 nm and 1100 nm, said multimode optical fiber has an overfilled launch bandwidth (OFL-BW) greater than 3500 MHz·km and a calculated effective modal bandwidth (EMBc) greater than 4700 MHz·km over a continuous operating wavelength range greater than 150 nm.

Abstract: A fiber optic cable includes a first optical fiber, a jacket, and a second optical fiber. The first optical fiber includes a glass core and cladding. The glass core is configured to provide controlled transmission of light through the fiber optic cable for high-speed data communication. The jacket has an interior surface that defines a conduit through which the first optical fiber extends. The jacket further has an exterior surface that defines the outside of the fiber optic cable. The second optical fiber is integrated with the exterior surface of the jacket.

Abstract: A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 LP modes for transmission of a spatially-multiplexed optical signal and has optimized maximum differential group delay (MDGD) through a wide range of wavelengths.

Abstract: A crimp connector is disclosed for enhancing pull-retention of a fiber optic cable in a fiber optic connector assembly housing. The connector has a flange for engaging with the housing and crimp member for engaging with the cable.

Abstract: A silicon photonics device and system therefor. The silicon photonics device can include a 300 nm SOI (silicon-on-insulator with 300 nm top Si) overlying a substrate member. A waveguide structure can be configured from a portion of the SOI layer and disposed overlying the substrate member. This waveguide structure can include an AWG (Arrayed Waveguide Gratings) structure with 300 nm×300 nm symmetric grating waveguides or an Echelle grating structure characterized by a top silicon thickness of 300 nm. The waveguide structure can also include an index compensator material configured to provide at least two material index ratings in the waveguide structure.

Abstract: An optical connector assembly (1) includes a plug (2) and a socket (3) which are interconnectable to each other in an axial direction (x). The plug (2) comprises a plug housing (5) in which a first ferrule (7) is arranged and the socket (3) comprises a socket housing (20), in which a second ferrule (23) is arranged.

Abstract: An interposer comprising a substrate having at least a top surface and a bottom surface, the top and bottom surfaces being substantially parallel; at least one series of bottom cavities on the bottom surface; at least one expansion cavity contiguous with the at least one series of bottom cavities, the at least one expansion cavity being larger than each of the bottom cavities; a perimeter defined on the bottom surface around the bottom cavities; at least one alignment fiducial on the top surface for cooperating with a corresponding fiducial on the detachable optical interface to optically couple an optical conduit attached to the detachable optical interface with at least one optical device; and the at least one optical device mounted to the substrate on at least a portion of the perimeter, the optical device configured to emit a diverging light beam or receive a non-diverging light beam.

Abstract: Gradient index (GRIN) lens holders employing groove alignment feature(s) in recessed cover and single piece components, connectors, and methods are disclosed. In one embodiment, the GRIN lens holder contains one or more internal groove alignment features configured to secure one or more GRIN lenses in the GRIN lens holder. The groove alignment features are also configured to accurately align the end faces of the GRIN lenses. The GRIN lens holders disclosed herein can be provided as part of an optical fiber ferrule and/or a fiber optic component or connector for making optical connections. A fiber optic connector containing the GRIN lens holders disclosed herein may be optically connected to one or more optical fibers in another fiber optic connector or to an optical device, such as a laser-emitting diode (LED), laser diode, or opto-electronic device for light transfer.