A free space coupling system comprising a waveguide horizontally positioned on an integrated circuit, and a silicon housing coupled to the waveguide, wherein the silicon housing comprises a reflective surface, a first port, wherein the first port is configured to receive light from an optic source positioned substantially parallel to the waveguide at a coupling point, and a second port, wherein the second port is oriented at about ninety degrees with respect to the first port, and wherein the second port is aligned with a grating port on the waveguide.

An optical coupler for mounting at a distal end of an optical imaging device includes a visualization section and an attachment section. At least one surface of the visualization section has a roughness that does not interfere with a video capture system of an optical imaging device.

A terminus for a fiber optic cable includes a ferrule. In one embodiment, an optical fiber of the cable passes through a central bore of the ferrule and is attached to a lens seated in a conical or cylindrical seat formed in an end surface of the ferrule by an epoxy. In a second embodiment, an optical fiber of the cable passes through the central bore of the ferrule. Next, a cap sleeve with a lens therein is slid over and attached to the ferrule such that the lens abuts or is attached to the optical fiber. In either embodiment, an inspection slot may optionally be formed in the ferrule and/or the cap sleeve to allow a technician to inspect the state of the attachment and/or abutment and/or spacing of the optical fiber and the lens.

Lens-based optical connector assemblies and methods of fabricating the same are disclosed. In one embodiment, a lens-based connector assembly includes a glass-based optical substrate includes at least one optical element within the optical substrate, and at least one alignment feature positioned at an edge of the glass-based optical substrate, wherein the at least one alignment feature is located within 0.4 m of a predetermined position with respect to the at least one optical element along an x-direction and a y-direction. The lens-based connector assembly further includes a connector element including a recess having an interior surface, The interior surface has at least one connector alignment feature. The glass-based optical substrate is disposed within the recess such that the at least one alignment feature of the glass-based optical substrate engages the at least one connector alignment feature.

An optical device includes a unitary substrate of optically transparent material. The unitary substrate has formed therein at least one collection lens and channel, the channel for receiving an optical fibre and arranged to align the optical fibre inserted therein such that the collection lens couples light collected by the collection lens into the optical fibre.

A signal light transmission member includes an AR coated lens, a light transmission part, and an optical fiber. The refractive index of the light transmission part has a specific relationship with the refractive index of a core material of the optical fiber. An anti-reflective coating is formed at an interface portion between the lens of the AR coated lens and the light transmission part.

An optical connector includes a housing including an accommodating portion, a lens body including a lens portion and assembled to the accommodating portion, and an optical conversion module. The optical conversion module includes a light element disposed at a position facing the lens portion when combining the optical conversion module with the lens body, and is assembled to the accommodating portion together with the lens portion.

A lens module for optically coupling an optical element with an optical fiber is disclosed. The lens module comprises a collimator lens surface, an emitting surface, a reflecting surface, and a support. The collimator lens surface converts incident light into collimated light. The emitting surface emits the collimated light. The reflecting surface which reflects the collimated light toward the emitting surface is positioned on an optical path between the collimator lens surface and the emitting surface. The support supports the optical fiber such that an end surface of the optical fiber faces the emitting surface.

An embodiment optical connecting structure is an optical connecting structure in a package structure connected to an optical fiber and including a first electric wiring board and a second electric wiring board facing the first electric wiring board. The optical connecting structure includes an optical element arranged on either the first electric wiring board or the second electric wiring board and a GRIN lens arranged on a surface of the second electric wiring board facing the first electric wiring board, in which one end surface of the GRIN lens faces an end surface of the optical element.

Fiber optical component (1) comprising a plurality of optical fibers (10) each having at least, preferably exactly, one core of glass, preferably made of quartz glass, which is designed in each case to guide a signal light radiation (A), with at least, preferably exactly, one first optical element (11) made of glass, preferably made of quartz glass, which is connected to an inlet surface (11a) with in each case one open end of the cores of the optical fibers (10), preferably further connected to an open end of a cladding of the optical fibers (10) substantially enclosing the core, and designed to receive the signal light radiations (A) from the open ends of the cores of the optical fibers (10) and to emit them to the outside via at least one outlet surface (11b), with at least, preferably exactly, a second optical element (12) made of glass, preferably quartz glass, per optical fiber (10), which is designed and arranged at a distance relative to the first optical element (11) along the direction of propagation of the signal light beams (A), to receive the signal light radiation (A) of at least, preferably exactly, one of the optical fibers (11) at an inlet surface (12a) from the first optical element (11) and to emit it to the outside via at least one outlet surface (12b), and with a carrier (14) which positions the second optical elements (12) at least along the direction of propagation of the signal light radiations (A), preferably and transversely to the direction of propagation of the signal light radiations (A), relative to the first optical element (11), wherein the carrier (14) has glass, preferably quartz glass, preferably consists of glass, preferably quartz glass.