Abstract: A passive alignment system is provided that comprises one or more first meltable elements disposed on a surface, one or more second meltable elements disposed on a surface and one or more first standoff devices. The first and second meltable elements transition from first and second pre-molten states, respectively, to first and second molten states, respectively, when subjected to first and second temperatures, respectively. In the first molten state, the first meltable elements control relative alignment between the surfaces in first and second dimensions. In the second molten state, the second meltable elements and the first standoff devices control relative alignment between the surfaces in a third dimension. The passive alignment system is suitable for use in a parallel optical communications module to precisely passively align ends of a plurality of optical fibers or waveguides with respective light sources or light detectors of the module.

Abstract: An exemplary embodiment of a device, configurable with various indicia of connectivity, and to be received by a data communication station is disclosed. The data communication station may include a frame having an aperture formed therein and a blank insert configured to be in registered alignment with the aperture. The blank insert may include a front facing surface configured to receive indicia thereon. The blank insert may include a retention feature configured to engage with an identification icon. In another embodiment, the data communication station may include a frame, a connector housing insert, and an identification icon configured to receive connectivity indicia thereon, wherein the connector housing insert may include a retention feature to engage with a corresponding retention feature on the identification icon. In another embodiment, a data communication station is configured to directly receive and retain an identification icon configured to receive connectivity indicia thereon.

Abstract: A retractable datacommunications rack includes: a mounting member configured to mount to a mounting structure; a linkage mounted to the mounting member; and an enclosure mounted on the linkage and configured to provide locations for datacommunications interconnections. The linkage is configured to move the enclosure between a retracted raised position and a lowered working position.

Abstract: A novel phase shifter design for carrier depletion based silicon modulators, based on an experimentally validated model, is described. It is believed that the heretofore neglected effect of incomplete ionization will have a significant impact on ultra-responsive phase shifters. A low V?L product of 0.3V·cm associated with a low propagation loss of 20 dB/cm is expected to be observed. The phase shifter is based on overlapping implantation steps, where the doses and energies are carefully chosen to utilize counter-doping to produce an S-shaped junction. This junction has a particularly attractive V?L figure of merit, while simultaneously achieving attractively low capacitance and optical loss. This improvement will enable significantly smaller Mach-Zehnder modulators to be constructed that nonetheless would have low drive voltages, with substantial decreases in insertion loss. The described fabrication process is of minimal complexity; in particular, no high-resolution lithographic step is required.

Abstract: Good optical properties can be achieved in an optical waveguide made of polycrystalline silicon. A semiconductor layer that constitutes each of a first optical signal line, a second optical signal line, a grating coupler, an optical modulator, and a p-type layer of a germanium optical receiver is formed by a polycrystalline silicon film. Crystal grains of polycrystalline silicon exposed on an upper surface of the semiconductor layer include crystal grains having flat surfaces parallel to a first main surface of a semiconductor substrate, and crystal grains of polycrystalline silicon exposed on side surfaces (including side surfaces of a protrusion of a protruding portion) of the semiconductor layer include crystal grains having flat surfaces perpendicular to the first main surface of the semiconductor substrate.

Abstract: A method of forming an optical device includes obtaining a wafer having multiple optical device dies that each includes a waveguide. The method also includes forming a facet on the waveguide of different dies. The method further includes separating the dies from the wafer after forming the facets. The dies are separated from the wafer such that the facets are positioned at an edge of the dies.

Abstract: A portable device for attaching a connector to an optical fiber, the optical fiber having an end, the device comprising means for receiving the optical fiber at the end of the optical fiber; and a connector station for autonomously attaching the connector to the optical fiber.

Abstract: A flexible substrate includes a first pad that extends from an end of the flexible substrate to a center of the flexible substrate, and at least a part of which is fixed to the first part; a second pad that extends from the end of the flexible substrate to the center at a position adjacent to the first pad, and at least a part of which is fixed to the first part; a signal line that connects a tip of the first pad and the second part and that is narrower in width than the first pad; and a coverlay that covers an area where the signal line is arranged and that includes a protrusion protruding, at a position at which the first pad is arranged, toward the end of the flexible substrate relative to the area where the signal line is arranged.

Abstract: A feedstock line comprises elongate filaments, a resin, and optical direction modifiers. The resin covers the elongate filaments. The optical direction modifiers are covered by the resin and are interspersed among the elongate filaments. Each of the optical direction modifiers has an outer surface. Each of the optical direction modifiers is configured such that when electromagnetic radiation strikes the outer surface from a first direction, at least a portion of the electromagnetic radiation departs the outer surface in a second direction that is at an angle to the first direction to irradiate, in the interior volume of the feedstock line, the resin that, due at least in part to the elongate filaments, is not directly accessible to the electromagnetic radiation, incident on the exterior surface of the feedstock line.

Abstract: A mirrorless optical waveguide can include a cladding and a core. The core can include an elongate section parallel to a surface plane. The core can further include two curved end sections that curve toward a surface plane. The surface plane can be parallel to a substrate. The cladding can have nanoparticles made of acrylic and/or urethane. The core can have similar nanoparticles of acrylic and/or urethane as well as nanoparticles with a high refractive index such as zirconia. The mirrorless optical waveguide can be formed by ink-jet printing.

Abstract: A telecommunications closure (10) comprising cables (46), a cover (20), an interior frame (30), the frame (30) holding telecommunications equipment (32), and a seal block (40) sealing the cover (20) closed relative to one or more cables (46) which enter the closure (10). The frame (30) defines a plurality of clamp assembly holders (36). A plurality of clamp assemblies (60, 160, 260) are provided, each clamp assembly (60, 160, 260) for holding a cable including a jacket (48), interior optical fibers (52), and at least one interior strength member (50). Each clamp assembly (60, 160, 260) includes a jacket clamp assembly (64, 164, 264) moveable relative to the frame, and including a wrap (68) which mounts around the jacket, and a strength member clamp assembly (80, 180, 280) moveable relative to the frame. The wrap (68) wraps around the jacket (48) and is adjustable for different jacket diameters.

Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.

Abstract: A novel phase shifter design for carrier depletion based silicon modulators, based on an experimentally validated model, is described. It is believed that the heretofore neglected effect of incomplete ionization will have a significant impact on ultra-responsive phase shifters. A low V?L product of 0.3 V·cm associated with a low propagation loss of 20 dB/cm is expected to be observed. The phase shifter is based on overlapping implantation steps, where the doses and energies are carefully chosen to utilize counter-doping to produce an S-shaped junction. This junction has a particularly attractive V?L figure of merit, while simultaneously achieving attractively low capacitance and optical loss. This improvement will enable significantly smaller Mach-Zehnder modulators to be constructed that nonetheless would have low drive voltages, with substantial decreases in insertion loss. The described fabrication process is of minimal complexity; in particular, no high-resolution lithographic step is required.

Abstract: A switch for selectively coupling light from two input fibers to a selected two of plurality of output optical fibers. The switch was designed to handle standard Fiber optical connectors which have been polished and meet the specifications for the optical performance. The duplex mechanical switch creates a method to physically switch two fibers (Duplex) to another two fibers (Duplex). The performance regarding insertion losses, back reflection, crosstalk, immunity against backscattering of light and insensitivity to the wavelength of the light is consistent with this mechanical switch.

Abstract: When an optical waveguide is formed, an area of an opening of a resist mask is equal to an area of a semiconductor layer for a dummy pattern exposed from the resist mask, and the semiconductor layer for the dummy pattern exposed from the resist mask has a uniform thickness in a region in which the dummy pattern is formed. As a result, an effective pattern density does not change in etching the semiconductor layer for the dummy pattern, and accordingly, it is possible to form a rib-shaped optical waveguide having desired dimensions and a desired shape.

Abstract: In one aspect, a light emitting device comprises a light source, a film-based lightguide with a light emitting region. The film may have a light mixing region positioned between a light input region and the light emitting region. In one aspect a ratio of a length of the light mixing region to a length of the light emitting region is greater than 0.1 in a first plane comprising the thickness direction. In one aspect the light emitting device comprises a guide element having a surface curved in a first plane positioned adjacent the inner surface of the film, wherein the film is folded along the curved surface at a first fold such that the first fold positions a portion of the light mixing region above or below the active area of the display and the light mixing region comprises the first fold.

Abstract: A fiber optic cable and connector assembly is disclosed. The assembly includes a cable optical fiber, a ferrule, a stub optical fiber having a first portion supported within the ferrule a second portion the projects rearwardly the ferrule and a signal modification structure optically coupled between the stub optical fiber and the cable optical fiber.

Abstract: Provided is a variable wavelength laser device that achieves phase control of high precision while restraining thermal interference and stably outputs emission light of desired wavelength. The variable wavelength laser device of the present invention includes: an optical amplification means including a low-reflective surface that reflects light of wavelengths other than a predetermined wavelength and emits light of the predetermined wavelength; a wavelength control means for controlling wavelength of light being transmitted through the optical waveguide; a phase control means for controlling phase of light being transmitted through the optical waveguide using heat emitted by a heating means; a reflection means for totally reflecting the inputted light; and a heat dissipation means for restraining transfer of heat emitted by the heating means to regions other than a region in which the phase control means is disposed.

Abstract: An optical modulator includes an optical modulation element including a plurality of signal electrodes and the like, a plurality of lead pins and the like for inputting radio frequency signals, and a relay substrate in which conductor patterns and the like that electrically connect the lead pins with the signal electrodes respectively are formed, the relay substrate is disposed so that a propagation direction of the radio frequency signals that have propagated through the lead pins is bent and guided to the conductor patterns, and the relay substrate is constituted so that widths of gaps between the plurality of conductor patterns in the optical modulator-side edge of the relay substrate is smaller than, preferably smaller than 50% of widths of gaps between the plurality of conductor patterns in the lead pin-side edge.

Abstract: The present invention provides an optical modulator, which can be reduced in size with size reduction of an optical waveguide and electric wiring as compared to a conventional optical modulator. An optical modulator according to an embodiment includes a substrate; an optical waveguide provided on the substrate and configured to guide light; a modulation unit formed of part of the optical waveguide and configured to modulate the light; and electric wires provided on the substrate and configured to supply a high-frequency electric signal to the modulation unit. One end portion and another end portion of the optical waveguide are provided on a first end surface, one end portion of the electric wiring is provided along the first end surface, another end portion of the electric wiring is provided along a second end surface being different from the first end surface.