Abstract: An apparatus, system, and method to counteract group velocity dispersion in fibers, or any other propagation of electromagnetic signals at any wavelength (microwave, terahertz, optical, etc.) in any other medium. A dispersion compensation step or device based on dispersion-engineered metamaterials is included and avoids the need of a long section of specialty fiber or the need for Bragg gratings (which have insertion loss).

Abstract: A color material dispersion liquid comprising a color material represented by the following general formula (I), a dispersant, and a solvent having a solubility of the color material of 0.1 (mg/10 g solvent) or less at 23° C., having excellent solvent resistance and excellent electrical reliability; a color resin composition for color filters, which can form a color layer that has high contrast, excellent solvent resistance and excellent electrical reliability; a color filter formed with the color resin composition for color filters; a liquid crystal display device having the color filter; and an organic light-emitting display device having the color filter.

Abstract: A photochromic curable composition comprising, as radically polymerizable component (A), a silsesquioxane component (A1) having a radically polymerizable group and a bifunctional radically polymerizable monomer (A2) represented by the following general formula (1), wherein a is a number of 0 to 30, and b is a number of 0 to 30 on condition that an average value of a+b is 2 to 30, R1, R2, R3 and R4 are each a hydrogen atom or a methyl group, and A is a divalent organic group on condition that the number of carbon atoms is 1 to 20, and a photochromic compound (B).

Abstract: The present invention relates to silicone hydrogels having a desirable balance of properties which can be formed without diluents. The silicone hydrogels are formed from reactive mixtures comprising at least one hydroxyl substituted, monofunctional polydialkylsiloxane monomer having between 2 and 120 dialkylsiloxane repeating units, at least one slow reacting hydrophilic monomer and at least one hydroxyl containing hydrophilic monomer.

Abstract: An optical element includes a base, and primary structures and secondary structures disposed on a surface of the base, each of the primary structures and secondary structures being a projection or a depression. The primary structures constitute a plurality of rows of tracks on the surface of the base and are periodically repeatedly arranged at a fine pitch equal to or smaller than a wavelength of visible light. The secondary structures are smaller in size than the primary structures, and are provided between the primary structures, in the gaps in the arrangement of the primary structures, or on the surfaces of the primary structures.

Abstract: A microlens substrate includes a light receiving section that includes a light receiving surface configured to receive light, a supporting member that fixes the light receiving section, a microlens array that includes a plurality of microlenses configured to guide the light to the light receiving section, a lens holding member that holds the microlens array, and a fixing member that fixes the supporting member and the lens holding member. The fixing member includes a first fixing part that fixes the lens holding member and a second fixing member that fixes the supporting member. The lens holding member includes a lens holding part that holds the microlens array. The lens holding part is disposed at a position between the first fixing part and the second fixing part in a direction orthogonal to the light receiving surface.

Abstract: An optical article includes an optical element and a low refractive index layer disposed on the optical element. The low refractive index layer having an effective refractive index of 1.3 or less and including a binder, a plurality of metal oxide particles dispersed in the binder and a plurality of interconnected voids. The low refractive index layer has a haze value of at least 30%.

Abstract: A display element for viewing a display such as, for example, a display on an electronic device. The display element comprises a transparent substrate and a scattering anti-glare layer located between a front surface and back surface of the display element, wherein the scattering anti-glare layer comprises a plurality of scattering elements. The scattering anti-glare layer has low reflectivity and provides an anti-glare effect for light reflected by interfaces within the display element.

Abstract: Bezel-concealing display covers and display devices are disclosed. In one example, a bezel-concealing display cover includes a bezel and a display panel includes a perimeter portion having a first surface and a second surface such that the perimeter portion is configured to be offset from the bezel of the display device by a gap GA. The bezel-concealing display cover further includes a first array of prisms on at least one of the first surface or the second surface of the perimeter portion that extend from an edge of the perimeter portion to a distance L. Each prism of the first array of prisms has a prism angle ?, and the first array of prisms is configured to shift a portion of an image proximate the bezel produced by the display panel such that the shifted portion of the image appears over the bezel to an observer.

Abstract: A color filter forming substrate used in a multifunctional terminal is provided which has a frame disposed surrounding respective colored layers for a color filter and having a non-display area formed by the frame portion all around a boundary between the display area and the frame, and specifically has a transparent substrate as a base material; and, on one side of the base material, colored layers of respective colors for a color filter disposed in a display area and a frame portion comprising a light-shielding colored layer disposed as a region not for display around a periphery of the region for display. The color filter forming substrate is used for a display device.

Abstract: There is provided an optical filter of the type having absorption and with low reflection, which includes a light-transmitting substrate; and a light-absorbing gradient refractive index thin film provided on the substrate and whose refractive index changes so as to be close to the refractive index of the substrate toward the substrate side in a film thickness direction. There is also provided an optical apparatus using the optical filter.

Abstract: An optical element is provided includes an optical layer having a flat incident surface on which light is incident and a wavelength-selective reflective layer disposed in the optical layer. Of light incident on the incident surface at an incident angle (?, ?), the optical element selectively directionally reflects light in at least one specific wavelength range in at least one direction other than a specular reflection direction (??, ?+180°) while transmitting light in at least one wavelength range other than the specific wavelength range, and is transparent to light in at least one wavelength range other than the specific wavelength range.

Abstract: An infrared shielding film includes a laminated body including a high refractive index layer and a low refractive index layer, the high refractive index layer and the low refractive index layer being alternately laminated and including a high refractive index material and a low refractive index material, respectively, and the high refractive index material and the low refractive index material having mutually different refractive indexes. The infrared film also includes a primary reflection unit providing a primary reflection band with reflectivity exceeding 60% in near-infrared region in reflection spectra of the infrared shielding film for incident light angles of 0° and 60°. In a short-wavelength side of the primary reflection band, wavelengths exhibiting 70% reflectivity of the peak value in the primary reflection band are referred to as s(0) nm and s(60) nm, respectively, a relationship s(60) nm>700 nm is satisfied.

Abstract: An optical filter having a passband at least partially overlapping with a wavelength range of 800 nm to 1100 nm is provided. The optical filter includes a filter stack formed of hydrogenated silicon layers and lower-refractive index layers stacked in alternation. The hydrogenated silicon layers each have a refractive index of greater than 3 over the wavelength range of 800 nm to 1100 nm and an extinction coefficient of less than 0.0005 over the wavelength range of 800 nm to 1100 nm.

Abstract: Articles including post-formed multilayer optical films with layers of at least one strain-induced birefringent material, methods of manufacturing such articles by post-forming multilayer optical films, and multilayer optical films that are particularly well-suited to post-forming operations are disclosed. The articles, methods and multilayer optical films of the present invention allow for post-forming of multilayer optical films including strain-induced index of refraction differentials while retaining the desired optical properties of the multilayer optical films.

Abstract: An organic EL display device includes at least a polarizer layer, a ?/2 plate, a ?/4 plate and an organic EL panel in this order, and an in-plane retardation Re2(550) of the ?/4 plate at 550 nm satisfies 115?Re2(550)?155, and an in-plane retardation Re1(550) of the ?/2 plate at 550 nm satisfies Re1(550)=2×Re2(550)±50 nm.

Abstract: A backlight device includes LEDs, a light guide plate, an LED board, and a light blocking portion. The light guide plate includes a side surface configured as a light entrance surface through which light from the LEDs enters and a plate surface configured as a light exit surface through which light exits the light guide plate. The LED board on which the LEDs are mounted and at least a portion of which is a light guide plate overlapping portion is on a light exit surface side. The light guide plate overlapping portion overlaps a light entering edge portion that is an edge portion of the light guide plate close to the light entrance surface. The light blocking portion is at the light guide plate overlapping portion of the LED board and between the light guide plate overlapping portion and the light entering edge portion of the light guide plate.

Abstract: A backlight unit including an optical pattern sheet and a liquid crystal display are provided. The backlight unit includes a light guide plate, a light source portion arranged adjacent to a side surface of the light guide plate to emit light, a mold frame having an extension portion that covers an upper portion of the light source portion and a part of an upper portion of the light guide plate, and an optical pattern sheet arranged on a lower portion of the extension portion to shade or diffuse incident light, wherein the optical pattern sheet includes a base film and an optical pattern portion positioned on the base film.

Abstract: The present invention provides a light bar and a backlight module using the light bar. The light bar includes: a circuit board (2), a quantum dot rail (4) mounted and fixed to the circuit board (2), and a light source (6) mounted to the circuit board (2) and located between the circuit board (2) and the quantum dot rail (4). The light source (6) is electrically connected to the circuit board (2). In the light bar and the backlight module using the light bar according to the present invention, the retention members are mounted to the circuit board of the light bar to allow the quantum dot rail to be directly mounted to the circuit board through snap engagement so as to enhance color saturation and at the same time simplifying the mounting structure and effectively reducing the manufacturing cost.

Abstract: This invention discloses a backlight module comprises a light guide plate, a middle frame, a quantum strip, and a light source disposed approximate to a light input surface of the light guide plate. The middle frame comprises a supporting portion and a containing portion connecting to the supporting portion, the supporting portion is disposed on a light output surface of the light guide plate, and the containing portion is disposed between the light source and the light input surface. The containing portion comprises a containing space, the quantum strip is disposed in the containing space, the a light transmitting hole is disposed on a first sidewall and a second sidewall of the containing portion for transmitting light from the light source via the quantum strip to radiate the light input surface of the light guide plate. This invention also discloses a liquid crystal display device comprises the above mentioned backlight module.

Abstract: A light guide device, comprising a light entrance part for receiving luminous radiation from a light source placed in front of it, and a light exit part configured for emitting the luminous radiation according to a distributed illumination pattern. The device includes: a first light guide member comprising a central light transmitting portion, on an end of which the light entrance part is formed, and a support portion connected to the central light transmitting portion and arranged concentrically therewith, and—a second light guide member comprising a shaft portion removably coupled to an end of the central light transmitting portion of the first light guide member, opposite to the light entrance part, and a light distributing portion connected to the shaft portion, on which the light exit part is formed.

Abstract: An optical waveguide sheet for use in an edge-lit backlight unit is provided, that allows rays of light to enter the end face and emits the rays of light from the front face substantially uniformly. The optical waveguide sheet includes on the back side thereof: a sticking preventive means; and a plurality of recessed portions falling toward the front face side. The sticking preventive means: a plurality of annular raised portions each provided around each of the plurality of recessed portions and projecting toward the back face side; and a plurality of protruding portions provided scatteredly in a region which does not include the annular raised portions. The optical waveguide sheet is preferably for use as a light guide film having an average thickness of no less than 100 ?m and no greater than 600 ?m.

Abstract: A liquid crystal display apparatus is provided. The liquid crystal display apparatus according to an exemplary embodiment of the present disclosure includes: a backlight; a liquid crystal display panel; and a light collecting layer. The liquid crystal display panel includes a first scan line and a second scan line crossing the first scan line. The light collecting layer is configured to collect lights from the backlight and guide the lights toward the liquid crystal display panel. Further, the light collecting layer includes: a first light collecting sheet having a plurality of light collecting structures extended in a first direction; and a second light collecting sheet disposed on the first light collecting sheet and having a plurality of light collecting structures extended in a second direction orthogonal to the first direction. Herein, the first direction is inclined with respect to an extension direction of the scan line.

Abstract: A light guide plate includes a light exit surface, a reflection surface opposite to the light exit surface, at least one light incidence surface connecting to the light exit surface and the reflection surface, and two side surfaces. The reflection surface includes first and second minute projection structures projecting toward interior of the light guide plate, the second minute projection structures being arranged between the first minute projection structures and the two side surfaces of the light guide plate. The first minute projection structures each include at least two side faces coated with a high reflectivity material and forming at least one included angle pointing toward the at least one light incidence surface. The second minute projection structures each include a side face coated with a high reflectivity material and defining two angles, which are less than 90°, with respect to a light incidence surface and a side surface.

Abstract: A backlight assembly includes a plurality of first light sources configured to emit a first color, and a plurality of second light sources configured to emit a second color different from the first color, where the backlight assembly is divided in a first boundary area, a second boundary area spaced apart from the first boundary area in a first direction, and a middle area between the first boundary area and the second boundary area, and an arrangement direction of first and second light sources of the plurality of first and second light sources in the first and second boundary areas is different from an arrangement direction of first and second light sources of the plurality of first and second light sources in the middle area.

Abstract: A snap-fit for fixing optical films is disclosed. The optical film includes at least one ear hook arranged above a border of a plastic frame. The plastic frame is assembled with a back frame so as to fix a light guiding plate within the back frame. The snap-fit includes a press portion and a connection portion extending from a first side of the press portion. The connection portion and the press portion cooperatively form an angle with a predetermined degree. The press portion presses the ear hook of the optical films on the border of the plastic frame. The connection portion clasps with the hook of the sidewall. By adopting the snap-fit, not only the narrow bezel design can be achieved, but also the optical film can be stably fixed. A backlight module with the above snap-fit and the liquid crystal display are also disclosed.

Abstract: A liquid crystal module includes a back bezel (1), a side-in backlight source (3), a light guide plate (2) having a light-in side opposite to the side-in backlight source (3), a quantum bar (5) between the side-in backlight source (3) and the light guide plate (2), a first support (6) having first windows (60) on top, and a second support (7) having second windows (70) on top. The quantum bar (5) is placed in a room formed by the first support (6) and the second support (7). The present invention also proposes a liquid crystal display. The liquid crystal module is assembled easily and reduces breakage risk for the quantum bar glass tubes.

Abstract: Provided are a light source device which includes a light guide plate configured to emit light made incident thereon through one surface thereof, a reflection sheet which has one surface facing the other surface of the light guide plate and is configured to reflect the light made incident on the light guide plate to one surface side of the light guide plate, and an opposite member oppositely disposed to the other surface of the reflection sheet, such that an occurrence of wrinkles and deflection in the reflection sheet may be prevented with a simple configuration, while surely fixing the position of the reflection sheet, and a display apparatus including the light source device. The reflection sheet includes a first reflection sheet piece and a second reflection sheet piece, wherein the first reflection sheet piece is pinched by the light guide plate and the back cover, and the second reflection sheet piece is held by the first reflection sheet piece.

Abstract: In a C band and an L band, the effective refractive indices of light propagating through the cores 11 and 21 adjacent to each other are different from each other such that a magnitude of crosstalk of light of a highest-order LP mode commonly propagating through the cores 11 and 21 adjacent to each other between the cores 11 and 21 adjacent to each other becomes a peak at a bending diameter smaller than a diameter of 100 mm, and the core has a higher refractive index in a center portion than in an outer circumferential portion such that a differential mode group delay of the cores 11 and 12 is 700 picoseconds/km or less.

Abstract: It is proposed an optical fiber including an optical core and an optical cladding surrounding the optical core. The optical core has a refractive graded-index profile with a minimal refractive index n1 and a maximal refractive index n0. The optical fiber has a numerical aperture NA and an optical core radius ? satisfying a criterion C of quality of optical communications defined by the following equation: C=NA?0.02×a where: NA=?{square root over (n02?n12)}=n0·?{square root over (2?)} with ? = n 0 2 - n 1 2 2 ? ? n 0 2 , ? is the normalized refractive index difference. The minimal and maximal refractive indexes n1, n0 and the optical core radius a are chosen such that NA>0.20, a>10 ?m and |C|<0.20.

Abstract: The optical fiber includes a core, the first cladding, and second cladding. The core is made of silica based glass containing Cl. The first cladding and the second cladding are made of silica based glass containing fluorine. The refractive index of the first cladding is lower than that of the core. The refractive index of the second cladding is lower than that of the core and higher than that of the first cladding. The second cladding is divided into an outer region having a uniform refractive index and an inner region having a refractive index higher than that of the outer region. The difference ?P between the maximum refractive index of the inner region and the refractive index of the outer region is 0.02% to 0.10% in terms of relative refractive index with respect to pure silica based glass. The radial thickness R of the inner region is 10 ?m to 25 ?m.

Abstract: An embodiment of the invention relates to a BI-MMF with OH group concentrations controlled along a radial direction. In the BI-MMF, an OH group concentration distribution along the radial direction has a shape in which a concentration peak is located in a concentration control interval provided between an outer periphery of a core and a trench part, including an interface between the core and trench part.

Abstract: The present invention provides a backlight module and a liquid crystal display device using the backlight module. The backlight module includes a light collector, a plurality of first optical fibers connected to the light collector, a plurality of first optical fiber splitters connected to the first optical fibers, a plurality of second optic fibers connected to the first optical fiber splitters, and a light guide plate arranged at one side of the second optic fibers. Each of the first optical fiber splitters includes a first light inlet and a plurality of first light outlets. The first light inlets are respectively connected to the first optical fibers and the first light outlets are respectively connected to the second optic fibers. The backlight module uses optic fiber splitters to split received sun light for making dense and uniform distribution of sun light at a light incidence site of a light guide plate.

Abstract: A method of forming a semiconductor structure includes forming a first optical waveguide and a second optical waveguide on a sapphire substrate. The first optical waveguide and the second optical waveguide each include a core portion of gallium nitride (GaN), and a cladding layer laterally surrounding the core portion. The cladding layer includes a material having a refractive index less than a refractive index of the sapphire substrate. The method further includes etching a portion of the cladding layer to form a microfluidic channel therein and forming a capping layer on a top surface of the first optical waveguide, the second optical waveguide and the microfluidic channel.

Abstract: This document describes a photonic device which makes it possible to both separate and combine bands of wavelengths in optical signals. To this end, the device described herein has a star coupler, a set of optical input waveguides connected to the input port of the star coupler, a waveguide grouping connected to the output port of the start coupler and a set of reflectors and phase shifters connected to said waveguide grouping. This document also provides details of a manufacturing process of the previously described device and a method for handling optical signals that makes use thereof.

Abstract: A device and a method for manufacturing the device are presented. The device includes a ridge, a peninsula formation, and a conductive trace. The ridge is defined within a semiconducting material. The peninsula formation is also defined within the semiconducting material and is adjacent to the ridge such that a gap exists between an end face of the peninsula formation and a side wall of the ridge. The conductive trace bridges across the gap such that the conductive trace runs over a top surface of the peninsula and a top surface of the ridge.

Abstract: Integrated photonic devices including an optical waveguide patterned with an array of antennas are provided. The small footprint, lightweight, and broadband integrated photonic devices provided can be configured into waveguide mode converters, polarization rotators, perfect absorbers, photodetectors, optical power diodes, nonlinear optical elements, heat-assisted magnetic recorders, optical isolators, and optical circulators.

Abstract: Various particular embodiments include a primary waveguide including an end section; cantilevered waveguides, each cantilevered waveguide including an end section disposed adjacent the end section of the primary waveguide; and control pins for applying an electrical bias to the cantilevered waveguides to selectively displace the end sections of the cantilevered waveguides away from the end section of the primary waveguide.

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: There is provided a directional coupler including a first optical waveguide core and a second optical waveguide core that are arranged in separate and parallel to each other and that propagate one of TE polarized waves and TM polarized waves of an m-th order and propagate the other of the TE polarized waves and the TM polarized waves of an n-th order. A separation distance between the first optical waveguide core and the second optical waveguide core and a width of the first optical waveguide core and the second optical waveguide core are set such that a mode coupling coefficient of a p-th mode of one of the polarized waves and a mode coupling coefficient of a q-th mode of the other polarized waves match between the first optical waveguide core and the second optical waveguide core.

Abstract: A semiconductor waveguide optical device and a method of manufacturing of a semiconductor optical device are disclosed. The semiconductor waveguide optical device may include a gradient index waveguide for mode conversion and/or vertical translation of optical modes of step-index waveguides, which may be disposed on or over a same substrate as the gradient index waveguide. The gradient index waveguide may be epitaxially grown.

Abstract: A wavelength selective switch is configured to demultiplex WDM light input from an input side for each wavelength, to supply the demultiplexed signal lights to deflectors corresponding to the demultiplexed wavelength, and to control the deflector to selectively output the demultiplexed signal lights to an output side, in which monitor light having at least a wavelength included in the WDM light is input to the wavelength selective switch from the output side of the wavelength selective switch, and the monitor light input from the output side of the wavelength selective switch is monitored, the monitor light being propagated in a direction opposite to a propagation direction of the signal lights each having the demultiplexed wavelength in the wavelength selective switch and being output to the input side of the wavelength selective switch.

Abstract: A composite optical waveguide is constructed using an array of waveguide cores, in which one core is tapered to a larger dimension, so that all the cores are used as a composite input port, and the one larger core is used as an output port. In addition, transverse couplers can be fabricated in a similar fashion. The waveguide cores are preferably made of SiN. In some cases, a layer of SiN which is provided as an etch stop is used as at least one of the waveguide cores. The waveguide cores can be spaced away from a semiconductor layer so as to minimize loses.

Abstract: Methods, systems, and apparatus for optical wavelength selective switching. One 2×2 wavelength selective switch array includes a plurality of optical input ports configured to receive one or more optical input beams, and a plurality of optical output ports configured to receive one or more one or more optical output beams wherein the plurality of optical input ports and optical output ports form an array of 2×2 optical port pairs; one or more optical conditioning and wavelength dispersion elements; a polarization modulator array having a plurality of polarizing modulation cells, each cell configured to independently change a polarization orientation of an optical beam passing through the cell and associated with a particular wavelength channel; and a polarization-selective beam-routing optical element configured to route each particular input beam to either a first output port or a second output port according to polarization orientation.

Abstract: An optical input/output device includes a phase modulator element and an optical element. The phase modulator element includes a plurality of pixels arranged in a matrix and is configured to change an optical phase of signal light by applying a driving signal corresponding to a phase pattern. The optical element is configured to convert a direction of exit of the signal light so as to irradiate each pixel with the signal light from the input port. A pattern generator unit includes superimposing means for superimposing a periodic phase pattern having a predetermined period in at least one direction in a plane of the phase modulator element, and means for controlling an amplitude of the periodic phase pattern. The signal light is diffracted to a position according to the period of the superimposed periodic phase pattern, so that light intensity of the signal light is dispersed.

Abstract: The disclosure generally relates to sets of optical waveguides such as optical fiber ribbons, and fiber optic connectors useful for connecting multiple optical fibers such as in optical fiber ribbon cables. In particular, the disclosure provides an efficient, compact, and reliable optical fiber connector that incorporates an optically transmissive substrate combining the features of optical fiber alignment, along with redirecting and shaping of the optical beam.

Abstract: An expanded-beam connector comprising a sleeve for holding at least one fiber and one lens body, the sleeve having an interior surface having a certain geometry, a fiber having a fiber end face, and a lens body, the lens body being formed with a first face and a second face, the first and second faces being substantially planar, the first face having an interface point for optically coupling with the fiber end face, the second face having a convex surface, the interface point and the convex surface being optically coupled through the lens body, the lens body having an outer periphery at least a portion of which has the certain geometry such that the lens body is held in a precise radial position relative to the sleeve when disposed in the sleeve.

Abstract: An optical fiber connector preloaded with an adhesive is provided. The optical connector includes a body having a passage with a first section extending inwardly from a first face of the body, a second section extending inwardly from a second face from the body, and a transition section located between the first section and the second section. The first section of the passage has a first width and the second section of the passage has a second width that is less than the first width. An adhesive composition is located within the transition section of the passage and is configured to bind an optical fiber to an inner surface of the second section following melting and solidification of the adhesive composition.

Abstract: An optical fiber connector plug having an anti-snag guide to prevent the plug from being caught on corners and edges when an attached cable is being pulled around corners and edges during installation and removal of the optical fiber connector plug. The optical fiber connector plug includes a unique arrangement of different width apertures corresponding to a removal tool having corresponding different width prongs to be received by the apertures to release the optical fiber connector plug from a coupling adapter.

Abstract: An optical connector plug includes a front housing, configured to hold a ferrule and to be fitted with a fitting portion of a coupling counterpart member, and a rear housing, mounted to the front housing to be allowed to slide toward front and rear directions at a rear side of the front housing. The front housing includes a latching piece with elasticity. The latching piece includes a locking portion, engageable with an engaging portion for fitting of the coupling counterpart member, and a releasing portion, configured to release the locking portion from an engaging state with the engaging portion. The rear housing includes a releasing lever. The releasing lever includes a hook portion, formed at a front part and configured to engage with the releasing portion at a time of retreat of the rear housing, so as to activate a release, and a knob portion for retreat.