Abstract: A variable wavelength light source and an apparatus including the same are disclosed. The variable wavelength light source includes: a first waveguide; a second waveguide spaced apart from the first waveguide; a first optical amplifier including a first gain medium; and a second optical amplifier including a second gain medium that is different from the first gain medium.

Abstract: A method for forming a silicon optical modulator with improved modulation efficiency. the method includes providing a silicon layer in a SOI substrate and forming a waveguide in the silicon layer with a rib structure respectively joining with a first slab region on one side and a second slab region on opposite side with corresponding slab thicknesses smaller than the rib structure. The method additionally includes forming multiple etched sections in each of the first slab region and the second slab regions with decreasing etching depths for sections further away from the rib structure. Furthermore, the method includes forming a PN junction in the rib structure with a moderate P/N doping level. Moreover, the method includes doping the multiple etched sections in the first/second slab region respectively with P-type/N-type impurity at increasing doping levels sequentially for sections further away from the rib structure.

Abstract: An optical connector includes: a base substrate; an optical fiber on the base substrate; a plurality of optical devices having different wavelength bands and arranged in a curved shape concave toward the optical fiber to surround an end surface of the optical fiber; and an optical path changing device between the optical fiber and the plurality of optical devices and configured to diffract or refract incident light at different angles according to wavelength bands of the incident light. According to the optical connector, the arrangement of a plurality of light-emitting or light-receiving devices may be simplified and the number of communication channels may be easily increased in a multiplexing or demultiplexing structure in which a plurality of communication channels are provided using a single optical fiber.

Abstract: A pupil replication waveguide for a projector display includes a slab of transparent material for propagating display light in the slab via total internal reflection. A diffraction grating is supported by the slab. The diffraction grating includes a plurality of tapered slanted fringes in a substrate for out-coupling the display light from the slab by diffraction into a blazed diffraction order. A greater portion of the display light is out-coupled into the blazed diffraction order, and a smaller portion of the display light is out-coupled into a non-blazed diffraction order. The tapered fringes result in the duty cycle of the diffraction grating varying along the thickness direction of the diffraction grating, to facilitate suppressing the portion of the display light out-coupled into the non-blazed diffraction order.

Abstract: A laser module includes a laser source and an optical marshalling module. The laser source is configured to generate and output a plurality of laser beams. The plurality of laser beams have different wavelengths relative to each other. The different wavelengths are distinguishable to an optical data communication system. The optical marshalling module is configured to receive the plurality of laser beams from the laser source and distribute a portion of each of the plurality of laser beams to each of a plurality of optical output ports of the optical marshalling module, such that all of the different wavelengths of the plurality of laser beams are provided to each of the plurality of optical output ports of the optical marshalling module. An optical amplifying module can be included to amplify laser light output from the optical marshalling module and provide the amplified laser light as output from the laser module.

Abstract: A fiber optic connector with a rotatable connection member for converting the connector from a first polarity to a second polarity, and a manipulator assembly comprising a tab member and a locking member movable between a locked position and an unlocked position, the manipulator assembly being coupled to the connection member such that the manipulator assembly and the connection member rotate conjointly about the axis of rotation, and when in locked position connector polarity cannot be changed.

Abstract: Power consumption in MZI-based integrated photonic switches or filters throughout the operational life can be reduced by reducing fabrication-induced phase misalignment between the unpowered operational mode of the switch or filter and the predominant switch state, and/or by enabling low-power compensation for any such misalignment. In various embodiments, misalignment is reduced by increasing the width of the waveguides implementing the interferometer arms of the MZI, and/or by structuring a region containing the MZI symmetrically to diminish stress-induced misalignment. In some embodiments, phase tuners are used to actively compensate for any phase misalignment, with a tuner drive voltage substantially lower than used to switch to the non-dominant state.

Abstract: An optical inspection circuit includes an optical circuit to be inspected formed on a substrate, an input optical waveguide optically connected to the optical circuit, and an output optical waveguide optically connected to the optical circuit. The input optical waveguide is connected with a grating coupler for input. The grating coupler is connected with the input optical waveguide via a spot size conversion unit. The output optical waveguide is optically connected with a photodiode.

Abstract: An optical waveguide 1, an optical waveguide 2 are formed on a substrate 3 to be crossed with each other, modulator electrodes 11, 12, 13 and 14 are arranged along the optical waveguides 1, 2, and antennas 21, 22, 23, 24 (i.e., square patch antennas having an approximately same shape) are arranged around four corners of the square shape. The modulator electrode 11 is energized from the antenna 21 and the antenna 22, the modulator electrode 12 is energized from the antenna 24 and the antenna 23, the modulator electrode 13 is energized from the antenna 21 and the antenna 24, and the modulator electrode 14 is energized from the antenna 22 and the antenna 23. The light wave propagating through the optical waveguide 1 is modulated by an electric field of Y-direction, and the light wave propagating through the optical waveguide 2 is modulated by an electric field of X-direction.

Abstract: Fiber array spacers, optical fiber assemblies, optical assemblies, and methods for fabricating optical assemblies are disclosed. In one embodiment, an optical fiber assembly includes a fiber array spacer and a fiber ribbon having an array of optical fibers. The fiber array spacer has an array of spacer fibers, wherein individual spacer fibers of the array of spacer fibers are bonded to one another, and a diameter of the individual spacer fibers determines a height of the fiber array spacer. Each optical fiber of the array of optical fibers has an glass portion. The glass portion of each optical fiber is bonded to the fiber array spacer such that a longitudinal axis of the individual spacer fibers is transverse to a longitudinal axis of individual optical fibers of the fiber ribbon.

Abstract: A fiber optic cable includes an optical fiber, a strength layer surrounding the optical fiber, and an outer jacket surrounding the strength layer. The strength layer includes a matrix material in which is integrated a plurality of reinforcing fibers. A fiber optic cable includes an optical fiber, a strength layer, a first electrical conductor affixed to an outer surface of the strength layer, a second electrical conductor affixed to the outer surface of the strength layer, and an outer jacket. The strength layer includes a polymeric material in which is embedded a plurality of reinforcing fibers. A method of manufacturing a fiber optic cable includes mixing a base material in an extruder. A strength layer is formed about an optical fiber. The strength layer includes a polymeric film with embedded reinforcing fibers disposed in the film. The base material is extruded through an extrusion die to form an outer jacket.

Abstract: An optical element for implementation in a heads-up display or other near-eye display system includes a lightguide and an incoupler optically coupled to the lightguide. The incoupler receives a display beam incident upon the lightguide at a first incidence position. The incoupler directs a first portion of the display beam into the lightguide to form an incoupled beam and causes a second portion to remain non-incoupled relative to the lightguide to form a non-incoupled beam. The optical element further includes a reflector to receive the non-incoupled beam and to reflect the non-incoupled beam towards the incoupler to form a reflected beam incident upon the incoupler at a second incidence position. The incoupler direct a corresponding portion of the reflected beam into the lightguide to form a further incoupled beam.

Abstract: According to embodiments, a method of making a micro structured glass article 100 includes bundling M bare optical fibers in a fiber bundle, wherein M is an integer greater than 100. Thereafter, the fiber bundle may be inserted in a cavity of a soot preform. The soot preform may have a density of less than or equal to 1.5 g/cm3 and comprise silica-based glass soot. The soot preform and inserted fiber bundle may then be consolidated to form a microstructured glass article preform. The micro structured glass article preform may then be drawn into the microstructured glass article 100 comprising M core elements 102 embedded in a cladding matrix 104.

Abstract: An optical coupling device of an embodiment includes: a first lead frame; a light emitting element provided on the first lead frame; a second lead frame; a light receiving element provided on the second lead frame and facing the light emitting element; a polyimide resin covering a light emitting surface of the light emitting element; a transparent resin portion provided between the light emitting element and the light receiving element; and a light-shielding resin molded body accommodating the light emitting element and the light receiving element.

Abstract: Aspects of the present disclosure are directed to wavelength division multiplexing systems comprising arrays of spectrally selective devices that are arranged on a substrate to compensate for perturbations of the spectral characteristics of the devices due to factors such as temperature non-uniformity, inherent spectral non-uniformity, and the like. As a result, shifts in the center wavelengths and/or changes in the wavelength spacing for the wavelength channels of a WDM system due to such perturbations are mitigated. In some embodiments, an array of spectrally selective devices is arranged on a substrate such that their respective wavelength channels are not linearly correlated with their physical position within the array, enabling the devices to be arranged in pairs that are subject to substantially the same environmental conditions and/or operate on nearly the same spectral range.

Abstract: One embodiment is directed to a compact system for scanning electromagnetic imaging radiation, comprising a first waveguide and a second waveguide, each of which is operatively coupled to at least one electromagnetic radiation source and configured such that output from the first and second waveguides is luminance modulated and scanned along one or more axes to form at least a portion of an image.

Abstract: An optical waveguide device includes a substrate on which an optical waveguide is formed, and a reinforcing block disposed on the substrate, along an end surface of the substrate on which an input portion or an output portion of the optical waveguide is disposed, in which an optical component that is joined to both the end surface of the substrate and an end surface of the reinforcing block is provided, a material used for a joining surface of the optical component and a material used for the substrate or the reinforcing block have at least different linear expansion coefficients of a direction parallel to the joining surface, and an area of a joining portion of the optical component is set to be smaller than an area of the end surfaces including joining portions of the substrate and the reinforcing block.

Abstract: An interposer device includes a substrate that includes a laser source chip interface region, a silicon photonics chip interface region, an optical amplifier module interface region. A fiber-to-interposer connection region is formed within the substrate. A first group of optical conveyance structures is formed within the substrate to optically connect a laser source chip to a silicon photonics chip when the laser source chip and the silicon photonics chip are interfaced to the substrate. A second group of optical conveyance structures is formed within the substrate to optically connect the silicon photonics chip to an optical amplifier module when the silicon photonics chip and the optical amplifier module are interfaced to the substrate. A third group of optical conveyance structures is formed within the substrate to optically connect the optical amplifier module to the fiber-to-interposer connection region when the optical amplifier module is interfaced to the substrate.

Abstract: A photon source may be composed of a substrate defining a planar surface, an optical shell having an annular base surface disposed above the substrate, and a plurality of optical sources. Each optical source may be composed of a mirror and an optical emitter aligned with the mirror along an optical axis. The mirror may be configured to reflect a collimated optical beam emitted by the optical emitter onto the annular base surface. The mirrors of the plurality of optical sources may be arranged in a first ring-like configuration. The annular base surface may be disposed above the first ring-like configuration. The optical emitters of the plurality of optical sources may be arranged in a second ring-like configuration. In one aspect, the optical shell may be a hollow frustum. In another aspect, a focus lens may be disposed between the substrate and the optical shell.

Abstract: The present invention provides an optical connector comprising an accommodation base, a terminal module, a cover, and a polarity adjusting portion. The accommodation base comprises an accommodation space communicating with an opening formed at a side of the accommodation base, and at least one terminal accommodation portion for accommodating the terminal module. The cover is arranged on the opening for sealing the opening. The cover further comprises extending covers corresponding to the terminal accommodation portions, respectively. Each extending cover has a first buckle structure. The polarity adjusting portion is rotatably coupled to the terminal accommodation portion. When the polarity adjusting portion is rotated to a predetermined position, a second buckle structure formed on the polarity adjusting portion is coupled to the first buckle structure for positioning the polarity adjusting portion.