Abstract: A semiconductor device includes a substrate, a passivation layer and an optical element. The substrate includes a surface and a sidewall. The passivation layer is disposed on the surface of the substrate. The optical element is disposed in the substrate and exposed from the sidewall of the substrate. The sidewall of the substrate is inclined towards the surface of the substrate at an angle of approximately 87 degrees to approximately 89 degrees.

Abstract: An internal device having a lightguide which cooperates with an internal light source. A first light coupling element couples an external light source to the lightguide and a second light coupling element extracts the total internal reflection (TIR) from the lightguide. Between the first and second lightguides, an angular grating device and phase grating device are imposed. The angular grating device applies angular diversity to the rays of the TIR light, while the phase grating device applies phase diversity to the rays of the TIR light. Each of the grating devices has a plurality of electrically switchable grating pixels having a unique first and second diffracting state which varies based on the applied voltage.

Abstract: Provided is a substrate-type optical waveguide element in which when (i) effective refractive indexes of a TE polarized wave and a TM polarized wave in the first core are NTE@WG1 and NTM@WG1, respectively, and (ii) effective refractive indexes of a TE polarized wave and a TM polarized wave in the second core are NTE@WG2 and NTM@WG2, respectively, a magnitude relation of the effective refractive indexes NTM@WG1 and NTM@WG2 at a start position of a parallel-core section is opposite to a magnitude relation of the effective refractive indexes NTM@WG1 and NTM@WG2 at an end position of the parallel-core section, and at least one of the cores includes (a) a main part having a quadrilateral cross section and (b) a protruding part protruding from one of side surfaces of the main part in a direction parallel to a boundary surface between a lower cladding and a upper cladding.

Abstract: An optical communication package includes a circuit layer, an optical component electrically coupled to the circuit layer to optically communicate outside of the package, and a thermoelectric cooler electrically coupled to the circuit layer and disposed to transfer heat from the optical component to the circuit layer.

Abstract: There is described a fiber-optic sensor for measuring a light signal from a fluorescible sample comprising heavy metal ions, for example. The fiber-optic sensor comprises an optical fiber having a side surface by which the light signal from the fluorescible sample is inputted. The optical fiber is corrugated to form at least two gratings on the side surface of the optical fiber. Each grating comprises periodically longitudinally spaced-apart valleys on the surface of the optical fiber, and is longitudinally spaced apart from any other grating of the at least two gratings.

Abstract: The present disclosure relates to a hybrid cable having a jacket with a central portion positioned between left and right portions. The central portion contains at least one optical fiber and the left and right portions contain electrical conductors. The left and right portions can be manually torn from the central portion.

Abstract: An alignment sleeve for an optical fiber adapter includes features to bring precision alignment between optical fiber cores. The sleeve includes a tubular inner area to accept first and second ferrule ends of first and second connectors. First and second tabs project from first and second ends of the sleeve. The first and second tabs slide into holes in the ferrule holders or barrels of the first and second connectors, so as to provide rotational alignment of the first and second ferrules, which may be presenting multi-core optical fibers. A mid-portion of the sleeve may include geometrical features to enable a snap fit of the sleeve into a housing of the adapter. More than one tab may be employed at the ends of the sleeve, and the tabs may have defined spacing and/or dimensions to enable security keying, only permitting coupling between connectors possessing matching holes in the ferrule barrels.

Abstract: A bundled optical fiber probe according to an embodiment of the present invention includes: a forward irradiation unit including a forward irradiation optical fiber disposed at the center thereof, the forward irradiation optical fiber having a flat end surface; and a side irradiation unit including a side irradiation optical fiber disposed at the periphery of the forward irradiation unit, the side irradiation optical fiber having an inclined end surface to laterally reflect a laser beam, wherein the forward irradiation unit and the side irradiation unit can be formed as a single bundle.

Abstract: A plurality of patch trays displaceably received in a chassis received in a left side or right side of an access side of a frame, and a splice tray removeably received in the access side of the frame. The splice tray having a capacity to receive at least about 288 fiber terminations and the plurality of patch trays displaceably received in the chassis having a capacity to collectively receive the at least about 288 fiber terminations from the splice tray. A patch tray including a row of pop-up adapter packs to collectively receive a respective portion of the at least about 288 fiber terminations received by the patch tray. The row of pop-up adapter packs arranged in the patch tray substantially in a left side or right side of the patch tray to offset the row of pop-up adapter packs to provide more space for routing the respective portion of the 288 fiber terminations in the patch tray.

Abstract: A connector assembly for a fiber optic cable comprises a multi-part inner housing adapted to support an optical fiber splice connection structure. A cable clamp is located at a proximal end of the inner housing and is adapted to engage an outer sheath of a fiber optic cable. Preferably, the cable clamp is rotatable with respect to the inner housing.

Abstract: Disclosed is a tool for releasing an engaged state in which a receptacle-side engagement section formed on a side surface of a receptacle provided on a substrate is engaged with a connector-side engagement section of an optical connector that is attachable to and detachable from the receptacle. The tool includes: release claws to be inserted into respective gaps, each gap being formed between a member arranged between a pair of engagement side plate parts each being provided with the connector-side engagement section, and each engagement side plate part; and a guide part that comes into opposition with a side surface of the optical connector or the receptacle. By bringing the guide part into opposition with the side surface and sliding the release claws toward the substrate, the engagement side plate parts are spread outward by the release claws and the engaged state is released.

Abstract: A wavelength selective switch and a wavelength selection method are provided, where the wavelength selective switch includes: a dual-microring resonator, including a first microring and a second microring that are connected in series, where the first microring and the second microring respectively include one annular PN junction, and a direction of the annular PN junction of the first microring is the same as that of the annular PN junction of the second microring; an electric tuning module, where a first electric port of the electric tuning module is connected to a P zone of the first microring and an N zone of the second microring, a second electric port of the electric tuning module is connected to an N zone of the first microring and a P zone of the second microring; and a thermal tuning module, configured to adjust an operating temperature of the dual-microring resonator.

Abstract: A photonic integrated circuit (PIC) may be optically aligned to a plurality of optical components (e.g., an optical fiber array). Optical alignment may be facilitated by the use of an optical impedance element coupled between a first input/output (I/O) optical waveguide and a second I/O optical waveguide of the PIC. The optical impedance element me be configured to be transmissive during optical alignment and to be non-transmissive during the regular operation of the PIC.

Abstract: A device comprising a metal layer on a crystalline silicon substrate, and a waveguide that has a refractive index greater than that of the crystalline silicon, wherein the waveguide is arranged to couple light to a surface plasmon mode at an interface between the silicon substrate and the metal layer when a waveguide mode is phase matched to the surface plasmon mode.

Abstract: A ferrule assembly for a fiber optic connector includes a ferrule having a first portion defining a front end face and a second portion defining a shoulder offset from the front end face in a longitudinal direction. The ferrule assembly also includes a pin retainer received over the first portion of the ferrule and at least one guide pin projecting from a first surface of the pin retainer. The pin retainer can be removed from the ferrule, rotated to a reverse orientation, and re-installed on the ferrule to switch the ferrule assembly from a male configuration to a female configuration.

Abstract: LC optical connectors and a duplex clip for forming duplex connector assemblies are provided herein. The LC optical connector includes a rigid latch member for positive locking with another component, such as an adaptor. The duplex clip is configured to hold two LC optical connectors to form a duplex connector assembly.

Abstract: At least some illustrative embodiments are including a method exposing a first optical fiber and a second optical fiber disposed within an interior volume of a first tube. A splice is formed between the first optical fiber and a third optical fiber, the splice joining an end of the first optical fiber and an end of the third optical fiber. A second tube is disposed the first, second, third optical fibers and the splice between the first and third optical fibers, wherein an end of the second tube adjoins an end of the first tube to form a structure comprising either an overlapping structure; or an abutting structure.

Abstract: An optical module includes a housing including an internal space that has an opening in a substrate mounting surface, an element mounting surface that forms a portion of an inner surface of the internal space, and a waveguide introduction opening that is formed in a side surface intersecting the substrate mounting surface and is opened to the opening of the substrate mounting surface and communicated with the internal space, an optical element that is mounted on the element mounting surface, and an electronic element that is mounted on the element mounting surface and is connected to the optical element. When the substrate mounting surface is mounted on a circuit substrate, an optical waveguide that protrudes from a surface of the circuit substrate is introduced into the internal space through the waveguide introduction opening.

Abstract: One or more embodiments of the disclosure relates to an end cap holder for fixing an end cap to aid in alignment with an optical fiber prior to splicing by a splicing device. The use of the end cap holder may provide a method to fix an end cap holder having a different diameter from an optical fiber that the splicing device may be set up or adjusted for.

Abstract: A plug connector for a hybrid cable comprises a fiber and wire holder to hold at least one optical fiber and at least one electrical conductor of the hybrid cable. The plug connector comprises at least one optical device being configured such that a light beam received from the at least one optical fiber at a first side of the at least one optical device is collimated and coupled out at the second side of the at least one optical device. The plug connector comprises an electrical contact pin to be coupled to the at least one electrical conductor of the hybrid cable. The electrical contact pin has a structure being configured to be engaged in a complimentary receptacle to mechanically fix the plug connector to the receptacle.