The invention relates to an optical fiber mounted photonic integrated circuit device, wherein the tolerance for positioning in terms of the coupling between the single mode optical fibers and the optical waveguides provided on the photonic integrated circuit device is increased. An optical waveguide core group is provided in such a manner where a plurality of optical waveguide cores having a portion that is tapered in the direction of the width within a plane are aligned parallel to each other at intervals that allow for mutual directional coupling and that are narrower than the width of the core of the single mode optical fiber, and the inclined connection end surface of the single mode optical fiber and the upper surface of an end portion of the optical waveguide cores face each other for coupling.

Adhesive reservoirs having shapes of stepped grooves are provided at corners in outer edges of an opening of an insertion opening portion having a shape of a rectangular opening of a main body of the ferrule which is formed by consecutively installing the insertion opening portion provided on a rear end side such that a boot having substantially a shape of a square tube and having an optical fiber core wire at a distal end is inserted and supported, and optical fiber core wire insertion holes provided on a front end side such that a side of a distal end portion of the optical fiber core wire is inserted into a deep portion of the insertion opening portion and the distal end portion is exposed outwardly. In this way, an adhesive is prevented from leaking out from a gap between the boot and the insertion opening portion.

A cable marking clip for securing to a connector of a cable such that axial movement of the cable marking clip relative to the connector is prevented includes an outer portion; and an inner portion attached to the outer portion at an end. The outer portion is configured to engage a connector having strain relief grooves and the inner portion is configured to be received radially between the connector and a cable so as to prevent axial movement of the cable marking clip relative to connectors with and without strain relief grooves.

A clamp mechanism for fixation of an optical fiber (OSF) with optical shape sensing properties arranged for Optical Shape Sensing. A fixing element preferably with a circular cross section serves to engage with the optical fiber (OSF), and together with an additional fixing arrangement with a straight longitudinal portion arranged for engaging with the associated optical fiber (OSF), a fixation of a section of the optical fiber (OSF) is provided with the optical fiber (OSF) in a straight position. In some embodiments, the clamp mechanism can be implemented by three straight rods (R1, R2, R3) with circular cross section, e.g. with the same diameter being a factor of such as 6.46 times a diameter of the optical fiber (OSF). Hereby an effective fixation and straightening of the optical fiber (OSF) without disturbing strain can be obtained with a clamp mechanism which is easy to assemble and disassemble in practical applications e.g. when used as a launch fixture, and with the optical fiber (OSF) incorporated in a medical device.

Lighting units and light fixtures incorporating lighting units having light-diffusing optical fiber are disclosed. Lighting units include a light source, at least one light-diffusing optical fiber optically coupled to the light source, and a support plate. The at least one light-diffusing optical fiber scatters light that is optically coupled into the at least one light-diffusing optical fiber from the light source. The support plate has a retention groove to which a portion of the at least one light-diffusing optical fiber is coupled. The support plate also includes a perimeter. A groove length of the retention groove is greater than the perimeter of the support plate.

An optical connection component according to one embodiment comprises: an adapter to which an optical connector that has a ferrule holding an optical fiber is connected; and a lever member which is attached to the adapter rotatably about a central axis that extends along a first direction intersecting with the optical axis direction of the optical fiber. The adapter has a latch with which the optical connector that moves along the optical axis direction engages. The lever member has a movement mechanism which rotates about the central axis toward the optical connector so as to cause the optical connector to move along the optical axis direction.