Abstract: Optical filters and methods of producing are provided. The method includes: providing a plurality of optical elements each with a substrate having two opposing major surfaces; providing a spacer or a surface-covering adhesive layer for holding the optical elements at a predefined distance; assembling the optical elements such that the optical elements are arranged adjacent to each other to define the optical filter, the optical elements having adjacent elements that are held at a predefined distance and with a cavity in between by the spacer or surface covering adhesive layer; determining an examination property regarding optical properties; and using the examination property for the step of assembling the optical elements and/or for performing a refinement step on the optical elements.

Abstract: The present disclosure provides an optical film for eyewear that allows, when used by a person feeling stressed, easy of production of a space having a color tone that the person psychologically feels healing, and a functional film for eyewear, an optical laminate, and eyewear that each include the optical film. The optical film for eyewear including an optical functional layer, and has that transmitted light from a light source of white light has a pale tone, is provided.

Abstract: An interference filter, including a first interface layer; a first dielectric portion of a first dielectric material, having a first thickness and resting on the first interface layer at a first location; a second dielectric portion of the first dielectric material, the second dielectric portion resting on the first interface layer at a second location, the second dielectric portion having a second thickness greater than the first thickness; a third dielectric portion of a second dielectric material having a refraction index smaller than the refraction index of the first material, the third dielectric portion having a third thickness and resting on the first dielectric portion, the sum of the first thickness and of the third thickness being equal to the second thickness; and a second interface layer resting on the second and third dielectric portions.

Abstract: Provided is inorganic polarizing plate, including in order of reciting: a substrate transparent to light in a bandwidth used; a first dielectric layer; a plurality of linear metal layers; a plurality of linear second dielectric layers; and a plurality of linear light absorbing layers, wherein the plurality of linear metal layers are arranged on the first dielectric layer at intervals shorter than a wavelength of the light, the plurality of linear second dielectric layers are arranged on the plurality of linear metal layers, respectively, the plurality of linear light absorbing layers are arranged on the plurality of linear second dielectric layers, respectively, and the inorganic polarizing plate includes a water repelling layer at peripheral ends of the inorganic polarizing plate at which longer-direction ends of the linear metal layers are present, to cover longer-direction ends of the linear metal layers, linear second dielectric layers, and linear light absorbing layers.

Abstract: Methods of making optical films and optical stacks are described. A method of making an optical lens molded to a first curved optical film includes providing a first optical film including alternating first and second polymeric layers; providing a thermoform tool having a curved surface; heating and conforming the first optical film to the curved surface to form a first curved optical film; and molding an optical lens onto the first curved optical film.

Abstract: Lens device that includes converging lens having light output surface being spaced apart along lens axis from light input surface. Converging lens has total internal reflection side surface being spaced apart around lens axis and having frusto-conical shape extending between light input and output surfaces of the converging lens. Portion of light input surface of converging lens includes light input cavity being bounded by perimeter and having central axis and being generally shaped as portion of spheroid. Light input cavity has plurality of grooves each respectively following spline along light input surface that intersects with central axis of light input cavity and with respective point on perimeter, wherein each of respective points are mutually spaced apart around perimeter of light input cavity. Lighting system including lens device.

Abstract: A light guide device includes a light guide plate that includes a first surface and a second surface facing the first surface in one of which plural light exit portions are provided, that guides light introduced into the light guide plate while reflecting the light between the first surface and the second surface, and that refracts or reflects the guided light so as to cause the light to exit by using the plural light exit portions. The light guide device has an introduction portion that is provided in the light guide plate and that introduces at least part of light incident upon the introduction portion in plural directions in a plane where the light is guided by the light guide plate.

Abstract: A wavelength conversion light guide assembly including a light guide plate, a holding element, and a wavelength conversion material is provided. The holding element is jointed with at least one side of the light guide plate, wherein the holding element and the light guide plate enclose a closed accommodating space. The wavelength conversion material is disposed in the accommodating space and includes a plurality of quantum dots. A light source module using the wavelength conversion light guide assembly is also provided.

Abstract: A lighting device includes a light guide plate, a light source circuit, and a chassis. By conducting an extrusion process, the light guide plate may at least include a first light-guiding area and a second light-guiding area. The light source circuit faces toward an inlet of the light guide plate. When the light source circuit emits light beams toward the light guide plate, the first light-guiding area reflects the light beams toward a first light-guiding angle group, and the second light-guiding area reflects the light beams toward a second light-guiding angle group. The first light-guiding angle group is different from the second light-guiding angle group. The chassis is configured to fix the light guide plate and the light source circuit.

Abstract: A display apparatus includes: a light guide plate; a light source that causes light to be incident on an end surface of the light guide plate; a hiding plate that is provided on a side of an emission surface of the light guide plate, and that includes a light transmission part which transmits light emitted from the emission surface and a light shielding part which has lower light transmittance than the light transmission part; and a colored board that has light reflectance closer to light reflectance of the light shielding part than light reflectance of the light transmission part in each wavelength, and that is provided on a side of a reflection surface of the light guide plate so as to overlap the light transmission part of the hiding plate when viewed from a direction perpendicular to the emission surface of the light guide plate.

Abstract: A light guide includes a light input surface, a first major surface orthogonal to the light input surface, a second major surface opposing the first major, a plurality of discrete light extraction features disposed on the second major surface and a plurality of closely packed prisms disposed along the second major surface. The plurality of discrete light extraction features separate the plurality of closely packed prisms from the second major surface. Each of the closely packed prisms include a first prism surface forming a first angle with the second surface in a range from 80 to 100 degrees or in a range from 85 to 95 degrees or in a range from 87 to 93 degrees.

Abstract: A light guide includes: an incident surface onto which light is emitted; a light exit surface which intersects with the incident surface and from which light is emitted; and a facing surface opposite to the light exit surface. The light guide includes a plurality of clusters of diffusion dots which diffuse light, and the plurality of clusters being regularly arranged at least on the facing surface.

Abstract: A display device includes a plurality of transparent display units, each unit configured to include a light emitting surface; the display units arranged spaced apart by a predetermined distance in a direction perpendicular to the light emitting surfaces such that the light emitting surfaces are parallel to each other; and each light emitting surface outputs a monochromatic grayscale image of a mutually different color.

Abstract: The present invention provides a backlight structure, including: a light source module having a first slant surface, where a slot is provided on the first slant surface, and the slot is configured to accommodate a light emitting element; a light guiding module having a light guiding plate and a light shielding layer, where a second slant surface is provided at a side of the light guiding module; and a baseplate configured to bear the light guiding module and the light source module. The light source module is engaged with the second slant surface of the light guiding module by means of the first slant surface.

Abstract: A lighting system can include a lightguide having an edge and two major surfaces. The lightguide can be mounted in a frame so that one of the major surfaces faces towards an area to be illuminated, while the other major surface faces away from the area. LEDs can couple light into the lightguide edge, with the coupled light emitting from both major surfaces. Light emitted from the major surface that faces away from the area to be illuminated can be reflected back into the lightguide by a reflective surface. The reflective surface can be separated from the lightguide by an air gap. The air gap can promote internal reflection at the major surface facing away from the area to be illuminated, thereby enhancing homogeneity and output of light towards the area to be illuminated. The frame can include integral wireways, reflector retention clips, and grounding circuitry.

Abstract: An all-glass cladding mode stripper comprises a plurality of high refractive index, small diameter glass beads disposed along an exposed portion of the inner cladding region of an optical fiber. The unwanted low NA signal light (as well as any other type of stray light) propagating within the cladding layer is removed by refracting into the adjacent beads, where this captured light then scatters away from the optical fiber.

Abstract: The present invention generally relates to the field of fiber optics, and more specifically to optical fibers, methods of manufacturing optical fibers, and methods of classifying optical fibers. In an embodiment, the present invention is a multimode optical fiber which comprises a core and clad material system where the refractive indices of the core and cladding are selected to minimize chromatic dispersion in the 850 nm wavelength window and the refractive index profile is optimized for minimum modal-chromatic dispersion in channels utilizing VCSEL transceivers. Multimode optical fibers according to this embodiment may have increased channel bandwidth.

Abstract: A hollow-core fibre (100) of non-bandgap type comprises a hollow core region (10) axially extending along the hollow-core fibre (100) and having a smallest transverse core dimension (D), wherein the core region (10) is adapted for guiding a transverse fundamental core mode and transverse higher order core modes, and an inner cladding region (20) comprising an arrangement of anti-resonant elements (AREs) (21, 21A, 21B) surrounding the core region (10) along the hollow-core fibre (100), each having a smallest transverse ARE dimension (di) and being adapted for guiding transverse ARE modes, wherein the core region (10) and the AREs (21, 21A, 21B) are configured to provide phase matching of the higher order core modes and the ARE modes and the ARE dimension (di) and the core dimension (D) are selected such that a ratio of the ARE and core dimensions (di/D) is approximated to a quotient of zeros of Bessel functions of first kind (ulm,ARE/ulm,core), multiplied with a fitting factor in a range of 0.9 to 1.

Abstract: A photonic neural component including optical transmitters, optical receivers, inter-node waveguides formed on a board, multiplexers configured to multiplex input optical signals onto the inter-node waveguides, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides via the multiplexers, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.

Abstract: The optical waveguide element has a first optical waveguide core; and a second optical waveguide core. In the optical waveguide element, the first optical waveguide core includes a first coupling portion configured to propagate any one polarized wave of a TE polarized wave and a TM polarized wave of a kth-order mode, the other polarized wave of an hth-order mode, and the other polarized wave of a pth-order mode, and a first Bragg reflector connected to the first coupling portion. The second optical waveguide core includes a second coupling portion.

Abstract: By using various anisotropic silicon etching techniques, a silicon substrate layer (1) and an expitaxial buffer layer (2) under the device structure are removed to obtain a monolithic photonic integration of silicon substrate suspended light-emitting diode (LED) with optical waveguide, and an ultra-thin device monolithically integrated with a suspended LED and an optical waveguide is obtained by further using the nitride back thinning etching technique. Therefore, internal loss of the LED is reduced and light emitting efficiency is improved. In the device according to the present disclosure, the light source and the optical waveguide are integrated on the same wafer, which solves the problem of monolithic integration of planar photons, enables the light emitted by the LED to be transmitted along the optical waveguide, addresses the problem of transmission of light in the optical waveguide, and implements the function of transmitting light within a plane.

Abstract: Compact photonics platforms and methods of forming the same are provided. An example of a compact photonics platform includes a layered structure having an active region along a longitudinal axis, a facet having an angle no less than a critical angle formed at at least one longitudinal end of the active region, and a waveguide having at least one grating coupler positioned in alignment with the angled facet to couple light out to or in from the waveguide.

Abstract: An apparatus includes an optical rib waveguide on a substrate, the optical rib waveguide further includes: a slab layer of silicon, a shallow rib of silicon in height that tapers laterally along a taper region, a deep rib of silicon that meets the shallow rib along the taper region of the shallow rib, and wherein the deep rib and the shallow rib have a same width, and wherein the shallow rib has a greater height than the deep rib, a core of silicon that tapers laterally in a range of 50-90% and extends on top of the deep rib and the shallow rib, and a cladding layer of silicon oxide that covers the slab, core, deep rib, and shallow rib.

Abstract: The wavelength response of an arrayed waveguide grating can be tuned, in accordance with various embodiments, using a beam sweeper including one or more heaters to shift a lateral position of light focused by the beam sweeper at an interface of the beam sweeper with an input free propagation region of the arrayed waveguide grating.

Abstract: A coating removing device includes a heating section that includes a heater to heat a coating of an optical fiber, and a blade to make an incision in the coating of the optical fiber; a gripping section that grips the optical fiber and is capable of moving with respect to the heating section; and a counter that counts a coating removal event number by detecting separation between the heating section and the gripping section.

Abstract: The present disclosure relates to a splice-on connector configuration having connector body defining a forward fiber buckling region and a rearward splice encapsulation region. The splice encapsulation region can be filled with curable adhesive. The splice encapsulation region can also function to anchor a fiber optic cable.

Abstract: A method of arranging a network of optical fiber ends opposite a corresponding network of waveguide ends of a semiconductor wafer displaceable with respect to each other in orthogonal directions X and Y, the method including: arranging the fibers so that the network ends have the same orientation and that the projection of the axis of each fiber on the wafer is parallel to direction Y; injecting, into one of the fibers, a light beam having a wavelength such that light is scattered from the fiber walls, locating the fiber axis, and displacing the fibers or the wafer in direction X to align a characteristic point in line with the projection of the fiber axis on the wafer.

Abstract: An apparatus includes a first coupler configured to input input light through an input waveguide and branch the input light into first and second branch waveguides; a second coupler configured to combine the first and second branch waveguides and to output the output light through an output waveguide; a phase adjuster having a birefringent property, provided to the second branch waveguide; and a polarization converter having a birefringent property, provided to the output waveguide and configured to, when reflected light corresponding to the output light is input to the output waveguide, convert a polarization state of the reflected light such that a first part of the reflected light for traveling through the first path and a second part of the reflected light for traveling through the second path are in antiphase at the input waveguide.

Abstract: An aspect of the disclosure provides a microring resonator (MRR). Such an MRR includes a ring optical waveguide and an optical waveguide, with the optical waveguide configured such that a first portion of the optical waveguide overlaps a second portion of the ring waveguide. In some embodiments, the optical waveguide has a first refractive index and the ring optical waveguide has a second refractive index such that the first refractive index is less than the second refractive index. In some embodiments, the optical waveguide is a polymer optical waveguide and the ring optical waveguide is a silicon optical waveguide. In some embodiments, the optical waveguide is larger in height than the ring waveguide and the first portion of the optical waveguide is configured to provide space for the second portion of the ring waveguide.

Abstract: Embodiments of the present invention provide a reconfigurable optical add/drop multiplexer, including: an input component, an output component, a beamsplitter, a first switch array, a wavelength dispersion system, a redirection system, and a second switch array. The input component includes M+P input ports, the output component includes N output ports, the beamsplitter is configured to: receive M input beams from M input ports, and split each of the M input beams into at least N parts, to obtain at least M×N beams; the first switch array includes at least P switch units; and the second switch array includes N rows of switch units. The first switch array, the beamsplitter, the wavelength dispersion system, the redirection system, and the second switch array are arranged so that P optical add beams and sub-beams of M×N beams in the at least M×N beams can be routed to the N output ports.

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 space transmission system includes a first optical collimator configured to transmit collimated light and change a directivity of transmitted collimated light, a second optical collimator configured to receive collimated light and change a directivity of received collimated light, and a reflector that is fixed and arranged on an optical path through which the first optical collimator and the second optical collimator are optically connected to each other.

Abstract: Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.

Abstract: A modified MT fiber optic ferrule has optical fiber receiving holes by the front end to receive the ends of optical fibers inserted into and through the ferrule. The optical fiber receiving holes are aligned with optical fiber openings in the center of the ferrule and have lenses formed in the optical fiber receiving holes to collimate from or focus light into the optical fibers in the fiber optic ferrules. The front end of the fiber optic ferrule may also have integral mating surfaces.

Abstract: A cleaning device is provided for removing debris from an end surface of a fiber optic connector. The fiber optic connectors may be a Multi Push On (MPO) or Mechanical Transfer (MT). The end surface may have a one or more ferrules with a fiber optic glass cable. The cleaning device includes a housing with a first end open to a gel that adheres to debris. A second end of the housing may be releasably attached to a protrusion or handle to insert and remove the device from an adapter receptacle. The handle may be replaced with a plug frame and protrusion so the device may be inserted into the receptacle of the adapter. The device may be placed over the end surface of the fiber optic connector that is not inserted into an adapter receptacle.

Abstract: A cleaning module adapted to clean a socket or a pin of a ferrule includes a tip assembly comprising a tip, the tip adapted to receive a cleaning media, a retractable alignment sleeve spring-mounted on a retractable alignment sleeve spring, wherein the sleeve retracts when a flange of an opening of the tip assembly presses against a surface of the ferrule, and wherein the retractable alignment sleeve is sized to surround the pin, and a main spring that extends the tip assembly, wherein the retractable alignment sleeve spring has both a spring constant and total compressive force that are lower than that of the main spring.

Abstract: A drying system comprises a drying box, a carrier moving and holding device, and a high pressure jet device mounted in the drying box. The carrier moving and holding device is configured to move a carrier into the drying box and hold the carrier in the drying box. A plurality of fiber optic ferrules are mounted on the carrier. The high pressure jet device is adapted to spray a high pressure gas on the carrier held in the drying box to dry the fiber optic ferrules.

Abstract: The glass-based ferrules include a glass substrate and two spaced-apart guide tubes, which can also be made of glass. The guide tubes include bores sized to receive guide pins from another ferrule. The ferrule can be used to form an optical interconnection device in the form of a waveguide connector that includes a planar lightwave circuit that supports multiple waveguides. The ferrule can also be used to form an optical interconnection device in the form of a fiber connector that includes a support substrate and an array of optical fibers supported thereby. The waveguide connector and fiber connector when mated form an integrated photonic device. Methods of forming the ferrule components, the ferrules and the optical interconnection devices are also disclosed.

Abstract: An optical-fiber connector includes a handle, a sleeve member, and connecting housings each including a base body and an elastic arm. Each elastic arm includes engaging blocks protruding from the elastic arm and a slidable groove on the corresponding base body. The slidable grooves face each other. The handle includes a handle body between the elastic arms and a handle member extending from the handle body. Two slidable blocks are at two sides of the handle body and respectively inserted into the slidable grooves, and two protruding blocks are at two sides of the handle member. The sleeve member is fitted over the handle member. First and second engaging grooves are on a wall surface of the sleeve member, and the first and second engaging grooves are on different positions of the wall surface of the sleeve member. Accordingly, the length of the handle is adjustable.

Abstract: A control device that may be implemented in a single IC chip is provided that is capable of controlling EAM bias voltages and DFB bias currents and of monitoring the EAM photocurrents and received signal strength indicators (RSSIs) in a multi-channel optical transceiver module. The control device IC chip can be manufactured at relatively low cost with relatively high yield, and can be implemented in a relatively small area. To implement the control device in a single IC chip, multiple supply voltage domains are used in the IC chip, one of which is a negative supply voltage domain and one of which is a positive supply voltage domain. In order to provide these different supply voltage domains, a level shift circuit is employed in the IC chip that converts signals from the positive to the negative supply voltage domain, and vice versa, and changes the voltage levels, as needed.

Abstract: An optical fiber connector assembly comprising an MPO connector and a push-pull tab. The connector may have an outer housing and an inner housing extending beyond a rear end of the outer housing, the outer housing having a first protrusion and the inner housing having a second protrusion positioned at a distance from the first protrusion. The push-pull tab may comprise a main body and an extender coupled to the main body, the main body having a plurality of walls forming a passageway configured to receive the connector, the plurality of walls including a first wall having a window sized according to the distance between the first and second protrusions and configured to receive the first and second protrusions. In another embodiment, the push-pull tab may comprise a first piece and a second piece configured to couple to each other to form a passageway for receiving the connector.

Abstract: A fiber optic connector having a push/pull tab where the tab is biased forward by a middle arm pushing on a chamfered surface of a widthwise recess without the use of a secondary spring to push forward the push/pull tab into said hook. The hook secures said connector in an adapter receptacle.

Abstract: A housing including a plurality of openings for receiving fiber optic connectors and protecting the polished end face of the connectors from damage while the connectors are stored within a telecommunications connection cabinet. A module with a plurality of optical fiber cables connected to a first optical fiber cable and terminated by a fiber optic connector. Each of the connectors are inserted within openings in a connector holder for storage and protection until the cables need to be connected to a customer equipment cable.

Abstract: A housing including a plurality of openings for receiving fiber optic connectors and protecting the polished end face of the connectors from damage while the connectors are stored within a telecommunications connection cabinet. A module with a plurality of optical fiber cables connected to a first optical fiber cable and terminated by a fiber optic connector. Each of the connectors are inserted within openings in a connector holder for storage and protection until the cables need to be connected to a customer equipment cable.

Abstract: A wedge device for use with a fiber optic connector comprises an insert body comprising a light transmissive material. The insert body defines a wedge portion integrally extending into a light pass structure, the light pass structure terminating in a single upper face distal from the wedge portion. For example, wedge device may be a unitary member formed entirely of the light transmissive material.

Abstract: In an embodiment, an optoelectronic module includes a printed circuit board (PCB) and a lens block. The printed circuit board (PCB) includes at least one of an optical transmitting or receiving array. The lens block may be configured for directly coupling light between one of the optical transmitting or receiving array to optical fibers in an optical cable. A method may include directly coupling light between one of an optical transmitting or receiving array and a lens block, and further coupling the light through the lens block directly to an optical fiber of an optical cable externally coupled to the optoelectronic module.

Abstract: An optical structure is presented. The optical structure includes a substrate including a cavity on a first surface of the substrate. The optical structure further includes an optical component on the substrate, the optical component including a second surface opposed to the first surface of the substrate. The optical structure also includes an adhesive in a gap between the first surface of the substrate and the second surface of the optical component affixing the optical component to the substrate, wherein at least one of the first surface of the substrate and the second surface of the optical component includes a predetermined portion arranged around the cavity, wherein the predetermined portion prevents the adhesive from infiltrating.

Abstract: The disclosed embodiments provide an apparatus for connecting one or more optical fibers to an optoelectronic system. This apparatus includes a packaged optoelectronic module (POeM) comprising an optical connector, a silicon photonic (SiP) chip, an integrated circuit (IC) chip, at least one laser chip and a package substrate. The apparatus also includes an assembly adapter enclosing the POeM, wherein the assembly adapter includes a mechanical transfer (MT) ferrule cavity, which includes one or more coarse-alignment structures to guide an MT ferrule enclosing at least one optical fiber during assembly of the apparatus. The assembly adapter is comprised of a solder-reflow-compatible material to facilitate bonding the assembly adapter to a circuit board.

Abstract: A method is described in which a database is monitored. The database includes information specifying allocations of time periods in which a first optical carrier corresponding to a first optical channel will not be supplying encoded first data into output optical signals being transmitted from a first node to a second node. An idler carrier being amplified stimulated emission light having a frequency corresponding to the first optical channel is supplied into the output optical signals transmitted from the first node to the second node during the time periods in which the first optical carrier will not be supplying encoded first data into the output optical signals.

Abstract: A fiber optic cable includes an optical fiber, strength components disposed on opposite sides of the optical fiber, and a polymeric cable jacket. The optical fiber includes a glass core, a glass cladding, and a polymer coating. The cable jacket surrounds the optical fiber and the strength components. Further, the cable jacket is tightly drawn onto the optical fiber, where excess fiber length of the optical fiber is such that positive strain is present in the optical fiber at room temperature (25° C.).