Abstract: An optical device includes an optical port array, an optical arrangement, a dispersion element, a focusing element and a programmable optical phase modulator. The optical port array has at least one optical input port for receiving an optical beam and a plurality of optical output ports. The optical arrangement allows optical coupling between the input port and each of the output ports and prevents optical coupling between any one of the plurality of optical output ports and any other of the plurality of optical output ports. The dispersion element receives the optical beam from the input port after traversing the optical arrangement and spatially separates the optical beam into a plurality of wavelength components. The focusing element focuses the plurality of wavelength components. The programmable optical phase modulator receives the focused plurality of wavelength components and steers them to a selected one of the optical outputs.

Abstract: A metallized optical fiber comprises: A) An optical fiber, and B) A conductive metal over and in contact with the optical fiber and having a thickness that is at least 0.15 times the thickness of the optical fiber. The metallized optical fiber can form a component of a hybrid optical fiber/coaxial cable, and it provides good protection against interference with the data signal traveling along the optical fiber from electrical current from an adjacent or near-by electrical conductor.

Abstract: Various embodiments of a fully integrated avalanche photodiode receiver and manufacturing method thereof are described herein. A photonic device includes a silicon-on-insulator (SOI) substrate with a buried oxide (BOX) layer therein, an avalanche photodiode integrated with the SOI substrate, a capacitor integrated with the SOI substrate, a resistor integrated with the SOI substrate, and silicon passive waveguides as well as bonding pads integrated with the SOI substrate.

Abstract: A fiber splice enclosure for fusion splices or mechanical splices of optical fibers includes a splice tray, including a splice retainer having a main body and retainer space in the body, an open extent along a surface of the body to receive a splice connection, and a mounting bracket holds the splice retainer with the open extent facing a wall for cooperation with the wall to retain a splice connection in the retainer space. The mounting bracket may be resilient for bending away from the wall to expose a retainer space for insertion or withdrawal of a splice connection. A method of positioning a fiber splice connection relative to a splice tray includes bending the mounting bracket to move the splice retainer from the wall to access retainer space in the splice retainer, and positioning a splice connection in or removing it from the retainer space.

Abstract: In the examples provided herein, an apparatus has a first substrate upon which one or more first filters have been fabricated on a first surface of the first substrate. The apparatus also has a second substrate upon which one or more second filters have been fabricated on a second surface of the second substrate, wherein the one or more first filters and the one or more second filters each transmit a different band of wavelengths. Additionally, the apparatus has a bonding material that bonds the first substrate to the second substrate.

Abstract: A contact image sensor comprises: a light source providing a collimated beam; a detector and a switchable grating array comprising first and second transparent substrates sandwiching an array of switchable grating elements with transparent electrodes applied to said substrates, said substrates together providing a total internal reflection light guide. A first transmission grating layer overlays said first substrate. A second transmission grating layer overlays said second substrate. A quarter wavelength retarder layer overlays said second transmission grating layer. A platen overlays said quarter wavelength retarder layer; a polarization-rotating reflecting layer overlaying said first transmission grating layer. An input coupler for directing light from said light source into said light guide and an output coupler for extracting light out of said light guide towards said detector are also provided.

Abstract: An optical fiber that is a photonic crystal fiber in which a plurality of holes is arranged along a longitudinal direction of the optical fiber, having a predetermined bending radius R determined according to a transmission distance L of the optical fiber and optical power output from the optical fiber, and having an inter-hole distance ? and a ratio d/? between a hole diameter d and the inter-hole distance ? such that light of a predetermined number of modes is transmitted and a bending loss of the light of a fundamental mode with the predetermined bending radius R is equal to or smaller than a predetermined value.

Abstract: A optical fiber cable includes optical fibers, reinforcing yarns, and a jacket. Each optical fiber has a fiber strain greater than 0.6 percent under standard installation tensile load. The jacket encloses the optical fibers and reinforcing yarns at a packing density greater than about 1.25 fibers per square millimeter. The combined effect of optical fibers having a fiber strain greater than 0.6 percent under standard installation tensile load and a small amount of reinforcing yarn provides the optical fiber cable with high proof strain, compact diameter, and high packing density.

Abstract: An optical branching waveguide disclosed herein includes: a substrate; a first optical waveguide provided on the substrate; a second optical waveguide provided on the substrate and arranged close to the first optical waveguide; and a cladding layer covering either one of a first portion of the first optical waveguide and a second portion of the second optical waveguide and including an opening the other one of the first portion and the second portion. The effective refractive index of the first optical waveguide at the first portion and the effective refractive index of the second optical waveguide at the second portion become equal in either one of a state where resin is present in the opening and a state where the resin is not present in the opening.

Abstract: An optical fiber cassette with corresponding rail structures includes a plurality of rail structures and an optical fiber cassette. Each rail structure includes a front flexible buckling arm and a rear buckling hook. The front flexible buckling arm includes a first suspended arm reflexed from a front portion of the rail structure and a stopping block formed on an end portion of the first suspended arm. The optical fiber cassette is located between the corresponding rail structures. The optical fiber cassette includes a front engaging block corresponding to the front flexible buckling arm and a rear buckling arm corresponding to the rear buckling hook. The rear flexible buckling arm includes a second suspended arm reflexed from a rear portion of the optical fiber cassette and an engaging hook formed on an end portion of the second suspended arm.

Abstract: An input waveguide is disposed on a substrate-parallel plane and configured to receive light from an input surface. A mode converter joins the input waveguide at a junction away from the input surface. The mode converter converts the light from a fundamental mode to a higher-order mode. An input coupler is proximate to and overlapping the input waveguide parallel to the substrate-parallel plane. The input coupler extending from the input surface to the mode converter and has an asymmetric taper that transitions from a wider crosstrack dimension near the input surface to a narrower crosstrack dimension away from the input surface.

Abstract: Branched hierarchical micro-truss structures may be incorporated into energy-absorbing structures to exhibit a tailored multi-stage buckling response to a range of different compressive loads. Branched hierarchical micro-truss structures may also be configured to function as vascular systems to deliver fluid for thermal load management or altering the aerodynamic properties of a vehicle or structure into which the branched hierarchical micro-truss structure is incorporated. The branched hierarchical micro-truss structure includes a first layer having a series of interconnected struts and a second layer having a series of struts branching outward from an end of each of the struts in the first layer.

Abstract: Monitoring output power levels of a carrier-effect based switching cell allows phase errors resulting from driving a PIN or PN junction of the switching cell to be dynamically compensated for. The compensation may also allow for compensating of phase errors resulting from the phase imbalance of input couplers as well as phase errors from the waveguide due to fabrication variations. By dynamically compensating for phase errors caused by the driving of the PIN or PN junction, the extinction ratio of the carrier-effect based switching cell can be increased.

Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.

Abstract: A connector includes a connector array of magnets having a first magnetic polarity pattern. A port includes a port array of magnets having a second magnetic polarity pattern that is complementary to the first magnetic polarity pattern. The connector is guided and aligned toward a mounted position in which the connector is retained on the port. The guiding and the aligning is through both (i) attraction when the connector is properly aligned to the port and (ii) repulsion when the connector is improperly aligned to the port. The port further includes a securing magnet configured to be activated when the connector reaches the mounted position, to magnetically secure the connector to the port.

Abstract: An optical waveguide termination includes a light-receiving inlet for receiving light to be terminated, a rib waveguide extending from the inlet, a doped, light-absorbing slab supporting the rib waveguide for absorbing light from the rib waveguide, and a tip at an end of the rib waveguide. The optical waveguide termination exhibits low back-reflection.

Abstract: Provided is a multi-fiber optical connector which can be easily assembled by having a simple structure and provides high workability at the time of connection. Since a plate-shaped guide 2 adapted to move a fiber is provided on an end surface and a gap x is provided on a rear surface of the plate-shaped guide 2, achieved is a structure in which each of fibers 5 is mutually moved in an optical axis direction along a penetration hole h provided at the plate-shaped guide 2 at the time of connecting connectors. Consequently, the respective fibers 5 which can be elastically connected independently from each other can be collectively connected at the time of connecting the connectors, and furthermore, positioning accuracy between the respective fibers 5 can be improved when the connector is used as a multi-fiber optical connector 1.

Abstract: A display subsystem for a virtual image generation system comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever. The drive assembly is configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light diverges from a longitudinal axis coincident with the fulcrum. The display subsystem further comprises an optical modulation apparatus configured for converging the light from the optical fiber towards the longitudinal axis, and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to an end user.

Abstract: A waveguide coupler includes a first waveguide and a second waveguide. The waveguide coupler also includes a connecting waveguide disposed between the first waveguide and the second waveguide. The connecting waveguide includes a first material having a first index of refraction and a second material having a second index of refraction higher than the first index of refraction.

Abstract: Planar waveguide junctions are described with a waggled transition section connecting input waveguide sections with output waveguides sections, in which the waggled transitions have alternating segments matching the input waveguide and output waveguides to efficiently transition the optical signal. The planar waveguide junctions can be used to form efficient optical splitters, mixers, or taps.