A fiber termination assembly includes an optical fiber inserted into an optical ferrule disposed in an optical passageway of a heat conductive housing, the optical passageway providing an optical path aligned with the openings of the housing, the optical ferrule including a central bore concentrically disposed about the optical path and configured to receive a portion of a proximal end of the optical fiber therein, the optical ferrule and optical fiber secured in relation to the heat conductive housing with epoxy at a distal end of the optical ferrule, wherein the optical ferrule is transparent at a predetermined wavelength of light such that for light coupled into an input surface of the proximal end of the optical fiber at least a portion of the light propagating as cladding modes is stripped out of the optical fiber and transported to and dissipated in the heat conductive housing.

A device including an optical tap and waveguide in the core and cladding of an optical fiber together with a glass ferrule that is angle polished to provide a reflection surface (with or without total internal reflection) that produces a reflection of the light tapped from the optical fiber to reach the bottom of the glass ferrule and propagate in a direction that is perpendicular to (or at least different than the direction of propagation close to) the axis of the optical fiber. The fiber waveguide may be created using an ultrafast fabrication method and the glass ferrule can itself be modified by the same ultrafast laser technique to further manipulate the light traveling inside.

An optoelectronic component including an optical waveguide integrated into a plane of the component. The optical waveguide configured to guide optical radiation in the plane. The component including a coupling element connected to the waveguide and coupling optical radiation into the waveguide along the main coupling path. The degree of coupling efficiency of the coupling element is less than one in respect to the main coupling path. The coupling element outputs optical loss radiation along a secondary coupling path. The optical loss radiation is proportional to the radiation transferred along the main coupling path. The optoelectronic component includes a detector connected to the coupling element that registers the optical loss radiation and produces a detector signal. The optoelectronic component includes a control unit configured to influence at least one operating variable of the optoelectronic component based on the detector signal.

An object is to provide a highly versatile local-light detection apparatus for an optical fiber capable of supporting various types of coated optical fibers. A local-light detection apparatus for an optical fiber according to the present invention includes a first jig including a recess curved in a longitudinal direction of a coated optical fiber and an optical input and output device configured to make light incident on the coated optical fiber in which a bend is formed and to receive light leaking from the coated optical fiber, a second jig including a protrusion curved in the longitudinal direction of the coated optical fiber, the protrusion being configured to sandwich the coated optical fiber between the recess of the first jig and the protrusion, a presser configured to apply a pressing force in a direction in which the recess of the first jig and the protrusion of the second jig approach each other and to form the bend in the coated optical fiber, and fiber guides disposed at both ends of the recess of the first jig in the longitudinal direction of the coated optical fiber, and to arrange the coated optical fiber on a predetermined path on the recess of the first jig regardless of a diameter of the coated optical fiber when the presser forms the bend in the coated optical fiber.

A traceable cable includes at least one data transmission element, a jacket at least partially surrounding the at least one data transmission element, and a tracing optical fiber incorporated with and extending along a length (l) of the cable. The tracing optical fiber includes a core having a first index of refraction and a cladding having a second index of refraction less than the first index of refraction, with the cladding substantially surrounding the core. The tracing optical fiber also includes periodically spaced apart scattering sites spaced along the optical fiber at a spacing ratio of n sites per meter, wherein each scattering site is configured to scatter no more than about 1/(n*l) times optical power provided to the tracing optical fiber. Related systems and methods are also disclosed.

A low reflectance film with a second reflectance (50% or lower) lower than a first reflectance is formed between an optical directional coupler and a first-layer wiring with the first reflectance. Thus, even when the first-layer wiring is formed above the optical directional coupler, the influence of the light reflected by the first-layer wiring on the optical signal propagating through the first optical waveguide and the second optical waveguide of the optical directional coupler can be reduced. Accordingly, the first-layer wiring can be arranged above the optical directional coupler, and the restriction on the layout of the first-layer wiring is relaxed.

An optical coupler that provides evanescent optical coupling includes an optical fiber and a waveguide. The optical fiber has a glass core, a glass inner cladding surrounding the glass core, and a polymeric outer cladding surrounding the glass inner cladding. The glass core and glass inner cladding define for the fiber a glass portion, which can be exposed at one end of the fiber by removing a portion of the polymeric outer cladding. The glass portion has a glass-portion surface. The waveguide has a waveguide core and a surface, and can be part of a photonic device. The glass portion of the fiber is interfaced with the waveguide to establish evanescent coupling between the fiber and the waveguide. Alignment features are used to facilitate aligning the fiber core to the waveguide core during the interfacing process to ensure suitable efficiency of the evanescent coupling.

Fiber optic terminals, tools and methods for adjusting a split ratio of a fiber optic terminal are disclosed. In one embodiment, a tool for adjusting a split ratio of a fiber optic terminal includes an axle for insertion into a port of the fiber optic terminal, and a terminal engagement body disposed about the axle. The terminal engagement body includes a terminal engagement feature for engaging an alignment feature within the fiber optic terminal, wherein the axle is free to rotate with respect to the terminal engagement body, and a set-point indicator. The tool further includes an end piece coupled to the axle, and a plurality of set-point markers, wherein rotation of the end piece causes rotation of the axle and an alignment between one set-point marker of the plurality of set-point markers with the set-point indicator indicates the split ratio of the fiber optic terminal.

A connector includes a first light transmission part and a second light transmission part, and when the connector is connected to an optical component, observing, by using the first light transmission part and the second light transmission part on an equipment room side, a detection light to identify the connector, and identifying an output port through which a user-side optical network unit (ONU) is connected to an equipment-room-side splitter.

In various aspects, an optical connector with a built-in photodetector for detecting light in the optical connector; an adapter for detachably receiving an optical connector, comprising an electrode configured to electrically contact an electrode of the optical connector; a connection apparatus comprising an arrangement of adapters for detachably receiving a plurality of optical connectors, each adapter comprising an electrode configured to electrically contact an electrode of the respective optical connector; a system with an interface configured to make an optical connection with an optical connector and a processing unit configured to receive from the connector an indication and to generate a feedback signal indicative of said indication; and/or an optical connector responsive to light to generate an electrical signal is provided.