Abstract: In one embodiment, a micro-electro-mechanical-system (MEMS) photonic switch includes a first plurality of collimators including a first collimator configured to receive a first traffic optical beam having a traffic wavelength and a first control optical beam having a control wavelength, where a first focal length of the first collimators at the traffic wavelength is different than a second focal length of the first collimators at the control wavelength. The MEMS photonic switch also includes a first mirror array optically coupled to the first plurality of collimators, where the first mirror array including a first plurality of first MEMS mirrors integrated on a first substrate and a first plurality of first photodiodes integrated on the first substrate, where the photodiodes are disposed in interstitial spaces between the MEMS mirrors.

Abstract: An optical coupling member includes an adapter and an optical connector. The optical connector has a ferrule, a connector housing, and a holding member. The holding member allows relative movement between the connector housing and the ferrule, and holds a relative angle around a central axis between the connector housing and the ferrule. The connector housing has a contact portion including a contact surface. The adapter has a sleeve and an adapter housing. The ferrule is inserted into the sleeve while the contact surface contacts with the adapter housing for elastically deforming the contact portion.

Abstract: The contact is sealed when disconnected and compliant when connected. It comprises at least a contact body in which the following are positioned: a transmission means held in a support at the end of which a ferrule is positioned, the seal between the ferrule and the transmission means being provided by filling with a sealant product. A sealing means is provided between the ferrule and the contact body, said means creating a seal between the ferrule and the contact body when the contact is disconnected and allowing the mechanical isolation of the ferrule relative to the contact body when the contact is connected.

Abstract: Polymeric compositions comprising a high-density polyethylene, a crystalline polypropylene, and an olefin block composite. Optical cable components fabricated from an extrudable polymeric composition of high-density polyethylene, a crystalline polypropylene, and an olefin block composite. Optionally, the polymeric composition can further comprise a nucleating agent. The polymeric composition may also contain one or more additives. The optical fiber cable components can be selected from buffer tubes, core tubes, and slotted core tubes, among others.

Abstract: A fiber-optic sensor array (100) comprises a line array of fiber-optic sensor packages (AX, BX, CX, DX, AY, BY, CY, DY, AZ, BZ, CZ, DZ) each having a package input/output (i/o) fiber and each being arranged to output a finite output pulse series of optical output pulses via the package i/o fiber in response to input thereto of one or more interrogating optical pulses. The array further comprises a fiber-optic bus (104,106, 108, 110) extending along the length of the line array, each package i/o fiber being optically coupled to the fiber-optic bus at a respective positions along the line array. The array allows interrogation at a higher frequency than is the case for a serial array of the same number of fiber-optic sensing packages.

Abstract: An optical connector includes an optical transceiver having an optical element, a case that covers the optical element, and a plurality of terminals that are externally protruded from a terminal projecting surface of the case, and a connector housing having a housing chamber that houses the optical transceiver. The terminal projecting surface of the case is formed as a flat reference plane. A surface which forms the housing chamber and to which the terminal projecting surface of the case abuts is formed as a flat position-correction surface. A pair of projections are formed on a surface which forms the housing chamber and which is opposite to the position-correction surface.

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: Technologies are generally described to form a waveguide in a polymer multilayer comprising a first and second polymer layer. The waveguide may be formed by directing light beams toward the polymer multilayer to form first and second cladding regions in the polymer multilayer, where the first and second cladding regions comprise a mixture of the first and second polymer layers. The first and second cladding regions may define a third cladding region and a waveguide core therebetween, where the third cladding region comprises a portion of the second polymer layer, and the waveguide core comprises a portion of the first polymer layer. In some examples, the polymer multilayer may be formed on a substrate such that the waveguide is formed on the substrate.

Abstract: A connection system includes an optical connector assembly; and an optical plug. The connector assembly includes a stack of gel-groove assemblies and a spring assembly mounted within a housing. Each of the gel-groove assemblies includes a first gel block at a first axial end, a second gel block at a second axial end, and a fiber mating region between the first and second gel blocks. The optical plug including sub-modules over-molded over arrays (e.g., ribbons) of the optical fibers. Each sub-module defines notches for receiving latches of the spring assembly when the optical plug is coupled to the first axial end of the optical adapter. Bare optical fibers extend from the plug, pass through the first axial gel block, and enter the fiber mating region when the plug is coupled to the adapter.

Abstract: A method for reducing loss in a subwavelength photonic crystal waveguide bend is disclosed. The method comprising: forming the subwavelength photonic crystal waveguide bend with a series of trapezoidal shaped dielectric pillars centered about a bend radius; wherein each of the trapezoidal shaped dielectric pillars comprise a top width, a bottom width, and a trapezoid height; wherein the length of the bottom width is greater than the length of the top width; and wherein the bottom width is closer to the center of the bend radius of the subwavelength photonic crystal waveguide bend than the top width. Other embodiments are described and claimed.

Abstract: An optical fiber joint includes: an optical fiber extending out of the optical cable is held in the cavity, one end of the inner sleeve element is fixed at the optical cable, and a sleeve is placed at the other end; and an outer sleeve element, the outer sleeve element is sleeved onto an outer side of the inner sleeve element; the sleeve of the inner sleeve element at least partially protrudes out of the outer sleeve element, a tail end of the sleeve protruding out of the outer sleeve element has an opening, so that the tail end of the sleeve forms a C-shaped section. Based on the foregoing technical solutions, the optical fiber connector according to the embodiments of the present disclosure is seamlessly connected to a C-shaped slot of an optical fiber adapter by using the sleeve having the C-shaped opening of the optical fiber joint.

Abstract: An optical transmitter including two reflective regions formed at two opposite ends of an interference region along a first direction and at least three electrodes electrically coupled to the interference region, where the amount of electrical carriers inside the interference region can be modulated by changing the relative electrical fields among the three electrodes, so that the amount of photons generated inside the interference region can be modulated and resonant along the first direction and emit along a second direction that is different from the first direction.

Abstract: An optical device includes an SOI substrate, the embedded insulating layer having a thickness of 200 nanometers (nm) or less; an optical waveguide comprising a Group III-V compound semiconductor material formed on top of the SOI substrate; and an optical leakage preventing layer formed inside the SOI substrate on a bottom side of the optical waveguide to prevent leakage of light from inside the optical waveguide towards the SOI substrate.

Abstract: In one embodiment, a micro-electro-mechanical-system (MEMS) photonic switch includes a first plurality of collimators including a first collimator configured to receive a first traffic optical beam having a traffic wavelength and a first control optical beam having a control wavelength, where a first focal length of the first collimators at the traffic wavelength is different than a second focal length of the first collimators at the control wavelength. The MEMS photonic switch also includes a first mirror array optically coupled to the first plurality of collimators, where the first mirror array including a first plurality of first MEMS mirrors integrated on a first substrate and a first plurality of first photodiodes integrated on the first substrate, where the photodiodes are disposed in interstitial spaces between the MEMS mirrors.

Abstract: A photoelectric conversion module includes: a photoelectric conversion element and an IC chip mounted on a mounting surface of a substrate; and an electrode provided on a side surface of the substrate, electrically connected to the IC chip, and having a concave shape sunk deeper than other portions of the side surface of the substrate.

Abstract: A technique is provided which can prevent the quality of an electrical signal from degrading in an optical semiconductor device. In a cross-section perpendicular to an extending direction of an electrical signal transmission line, the electrical signal transmission line is surrounded by a shielding portion including a first noise cut wiring, second plugs, a first layer wiring, first plugs, a shielding semiconductor layer, first plugs, a first layer wiring, second plugs, and a second noise cut wiring, and the shielding portion is fixed to a reference potential. Thereby, the shielding portion blocks noise due to effects of a magnetic field or an electric field from the semiconductor substrate, which affects the electrical signal transmission line.

Abstract: A collimator system comprises a micro lens array and a fiber array. The fiber array has a substrate with a plurality of holes for holding a plurality of optical fibers. The fibers are glued into the holes. Before gluing, each of the fibers is positioned against the same side of a corresponding hole resulting in all fibers being located substantially equally with respect to the holes. The lens array is mounted with an offset to the fiber array resulting in alignment of the fibers and the lenses.

Abstract: An electro-refraction modulator includes a series of layers with different doping levels surrounding a single-crystal regrown p-n junction implemented in a silicon-on-insulator (SOI) technology. The regrown p-n junction is spatially abrupt and precisely defined, which significantly increases the tuning efficiency of the electro-refraction modulator while maintaining acceptable insertion loss. Consequently, the electro-refraction modulator (such as a resonator modulator or a Mach-Zehnder interferometer modulator) can have high bandwidth, compact size and reduced drive voltage. The improved performance of the electro-refraction modulator may facilitate silicon-photonic links for use in applications such as wavelength-division multiplexing.

Abstract: A method including the steps of providing a light-diffusing optical fiber (12a) having a glass core (20), a cladding (40) surrounding the core (20), and a plurality of nano-sized structures in the form of voids (32) situated within said core (20) or at a core-cladding boundary; cleaving the light-diffusing fiber (12a), thereby forming a cleaved end face (66); and applying energy to one or more of 1) the cleaved end face (66) and 2) the light-diffusing fiber (12b) along a portion of the length thereof adjacent the cleaved end face (66), the amount of energy being sufficient to collapse and seal the voids (32) exposed at the cleaved end face (66), leaving a sealed cleaved end face (68). A lens may then be attached to the sealed cleaved end face (68), or the sealed cleaved end face (68) may be softened sufficiently to induce formation of a lensing surface such as a convex lensing surface (60) on the sealed end face (68).

Abstract: A graphene coated optic fiber is disclosed. An optic fiber core is encapsulated within a graphene capsule. An optic fiber having cladding layer encapsulated within a graphene capsule is also disclosed. The graphene capsule may comprise a single layer of graphene, bi-layer of graphene, or multiple layers of graphene. An optical circuit is disclosed that transmits ultraviolet light across an optic fiber encapsulated with graphene.