Abstract: To autonomously apply a bias voltage to an optical modulator according to phase angle information provided from outside in a pluggable optical module. A pluggable electric connector (11) can communicate a communication data signal and a control signal with an optical communication apparatus (92). An optical signal output unit (13) includes a Mach-Zehnder type optical modulator including a phase modulation area and outputs an optical modulation signal (LS) modulated according to the communication data signal. An optical power control unit (14) can control optical power of the optical modulation signal (LS). A pluggable optical receptor (15) can output the optical modulation signal (LS) to an optical fiber (91). A control unit (12) controls a modulation operation of the optical signal output unit (13) and the bias voltage applied to the phase modulation area. The control unit (12) determines the bias voltage applied to the phase modulation area according to phase angle information of the control signal (CON1).

Abstract: An intermittently bonded optical fibre ribbon includes a plurality of optical fibres. The plurality of optical fibres is defined by at least two adjacent central optical fibers, a first plurality of optical fibers and a second plurality of fibers. The at least two adjacent central optical fibers are sandwiched between the first plurality of optical fibers and the second plurality of optical fibers. The at least two adjacent central optical fibers are fully bonded along length of the at least two central fibres. The first plurality of fibers and the second plurality of optical fibers are bonded partially along non-central length of the plurality of optical fibres.

Abstract: Before pulling a leading end of a fiber optic cable through a duct in order to splice the cable fibers to other fibers located at a far end of the duct, the outer jacket of the cable and elements surrounding the cable fibers are removed to expose the fibers. The exposed fibers are prepared by (a) removing coatings on the fibers, (b) cleaving the ends of the fibers, and (c) placing the cleaved fibers into one or more protective covers. A cable grip or sock is dimensioned and formed to envelop the leading end of the cable including the protective covers, up to and including the outer jacket. The grip together with the cable are pulled through the duct, and the grip and the protective covers are removed at the far end of the duct to expose the cleaved fibers for splicing to the other fibers at the far end.

Abstract: A pulsed light generation device, includes: a first optical fiber through which first pulsed light and second pulsed light, having an intensity that decreases while an intensity of the first pulsed light increases, and increases while the intensity of the first pulsed light decreases, having been multiplexed and entered therein, are propagated; and a second optical fiber at which the first pulsed light, having exited the first optical fiber and entered therein, is amplified while being propagated therein, wherein: at the first optical fiber, phase modulation occurs in the first pulsed light due to cross phase modulation caused by the second pulsed light; and self-phase modulation occurring in the first pulsed light at the second optical fiber is diminished by the phase modulation having occurred at the first optical fiber.

Abstract: A gas detector sensor node includes a first sensor conductor having a terminal end, a second sensor conductor including an end section, and a coupler joining the terminal end of the first sensor conductor with the end section of the second sensor conductor. The coupler is permeable to gas.

Abstract: An underfill adhesive may be used to mechanically stabilize a photonic integrated circuit chip (PIC) onto an electrical substrate; however, when the PIC is optically coupled to an external optical fiber at or near an edge of the chip, e.g. using an edge coupler, the underfill may flow into the optical interface impacting optical coupling quality. A photonic integrated circuit apparatus according to the disclosure comprises an electrical substrate, which includes a cavity underneath the edge coupler for preventing underfill material from entering the optical interface by impeding capillary action thereof.

Abstract: An optical fiber comprising a core, a cladding disposed about the core, and a primary coating disposed about the cladding. The primary coating is cured during draw to at least eighty-five percent (85%) of the primary coating's fully cured primary-coating in situ modulus (P-ISM) value.

Abstract: A light guide structure and a display device are provided. The light guide structure includes: a first substrate including at least one first through hole; a second substrate arranged opposite to the first substrate and including at least one second through hole; and at least one fiber bundle including a first end and a second end, the first end of each of the fiber bundle fixed in one of the first through holes, and the second end of the fiber bundle is a free end; wherein a distance between the first substrate and the second substrate is adjustable; and an orthogonal projection of at least part of the first through hole on the second substrate coincides with the second through hole.

Abstract: Described herein are coated optical fibers including an optical fiber portion, wherein the optical fiber portion includes a glass core and cladding section that is configured to possesses certain mode-field diameters and effective areas, and a coating portion including a primary and secondary coating, wherein the primary coating is the cured product of a composition that possesses specified liquid glass transition temperatures, such as below ?82° C., and/or a viscosity ratios, such as between 25° C. and 85° C., of less than 13.9. Also described are radiation curable coating compositions possessing reduced thermal sensitivity, methods of coating such radiation curable coating compositions to form coated optical fibers, and optical fiber cables comprising the coated optical fibers and/or radiation curable coating compositions elsewhere described.

Abstract: An optical-fiber ribbon having excellent flexibility, strength, and robustness facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present.

Abstract: A transistor outline package is provided that includes a header with a mounting area for an optoelectronic component. The header has a signal pin disposed in a feedthrough. The feedthrough is filled with an insulating material made of glass and/or glass ceramic. The feedthrough has a recessed area on at least one side that is not completely filled up with the insulating material. The recessed area defines a cavity at least partially around the signal pin and the signal pin has an enlarged portion in the recessed area.

Abstract: An optical fiber cable includes: a plurality of ribs formed along a longitudinal direction of a cable; and a slot core in which a slot grove for housing an optical fiber ribbon is formed between the ribs. In the slot groove, a plurality of optical fiber ribbons are bundled and a plurality of subunits whose periphery is wound with a bundle material are provided, and the bundle materials between the plurality of subunits are bonded to each other.

Abstract: A joint layout is provided for the firm bonding of components by means of a light-activated joining agent. A light guide element is arranged at least in sections in a joint gap between the components. The light guide element is embedded into the joining agent in the joint gap, and light for activating the joining agent can be outcoupled from the light guide element in the joint gap. In this context, at least one spacer is arranged in the joint gap between the light guide element and at least one of the components.

Abstract: MEMS-actuated optical switches can be implemented on photonic chips. These switches are compact, essentially planar, simple to implement and include only one moving MEMS component per switch. The switches exhibit low optical loss, require low power to operate, and are simple to control and easy to integrate with other optical devices. Each switch has two optical waveguides that are optically coupled in an ON switch state and not coupled in an OFF switch state. An end or a medial section of one of the two waveguides may translate between the ON and OFF states to affect the coupling. Alternatively, a coupling frustrator may translate between the ON and OFF states to affect the coupling.

Abstract: This optical fiber alignment jig for aligning a plurality of optical fibers with the tip end coating stripped off to expose glass fiber includes a rail; a convex push-up part capable of moving in the extending direction of the rail; and a plurality of plate-shaped parts that each have a first surface and a second surface perpendicular to the extending direction of the rail and an inclined surface that can carry a respective optical fiber, the inclined surfaces of the plurality of plate-shaped parts being inclined, relative to the extending direction of the rail, in the same direction. The plurality of plate-shaped parts are arranged side by side along the extending direction of the rail with the first surface of one plate-shaped part facing the second surface of an adjacent plate-shaped part and are contacted by the push-up part so as to move toward the inclined surface side.

Abstract: A photo detector includes a variable optical attenuator provided on a substrate, an optical 90-degree hybrid device provided on the substrate, and a plurality of photodiodes provided on the substrate. The plurality of photodiodes are optically coupled to the variable optical attenuator via the optical 90-degree hybrid device. The variable optical attenuator includes an optical waveguide disposed on the substrate, a heater configured to heat the optical waveguide, and an insulating layer at least partially disposed between the substrate and the optical waveguide.

Abstract: An intermittent connection-type optical fiber ribbon including: optical fibers aligned in a width direction of the intermittent connection-type optical fiber ribbon; and a connection part disposed between two separation spaces that are aligned in a lengthwise direction of the intermittent connection-type optical fiber ribbon and that separate adjacent ones of the optical fibers. A percentage content of the air bubbles is equal to or less than 15.5%. The percentage content of the air bubbles is a proportion of a total area of the air bubbles contained in the connection part to an area of the connection part in a section acquired by cutting the intermittent connection-type optical fiber in the width direction.

Abstract: A multilayer grating is a diffraction grating that includes a plurality of layers. The plurality of layers arranged to form a 2-dimensional grating, the layers including at least a first patterned layer and a second patterned layer. The first patterned layer includes a plurality of different materials that are arranged in a first pattern such that the first patterned layer has a first index profile. The second patterned layer includes a plurality of different materials that are arranged in a second pattern such that the second patterned layer has a second index profile that is inverted relative to the first index profile. Ambient light incident on the first patterned layer and the second patterned layer creates a first diffracted ray and a second diffracted ray, respectively, and the first diffracted ray and the second diffracted ray destructively interfere with each other based in part on the inverted index profile.

Abstract: An optical fiber cable includes a central tube having a first inner and a first outer surface. The first inner surface defines a bore along a longitudinal axis of the cable. Optical fibers are disposed within the bore of the central tube. A cable jacket is disposed around the central tube. The cable jacket has a second inner and a second outer surface defining a first thickness. A skin layer is disposed around the cable jacket. The skin layer has a third inner and a third outer surface defining a second thickness that is 100 ?m or less. The cable jacket material is different from the skin layer material, and the third outer surface defines the outermost surface of the optical fiber cable. Access sections made of the second material extend from the skin layer into the first thickness of the cable jacket.

Abstract: An optical connection assembly joining optical components is described. The optical connection assembly is manufactured using a fan out wafer level packaging to produce dies/frames which include mechanical connection features. A fastener is joined to a connection component and affixed to the mechanical connection features, to provide structural support to the connection between the connected component and the die/frame structure.