An object of the present invention is to provide an adhesive composition for a high-power optical fiber having a low pull-in amount. The adhesive composition for a high-power optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane cage structure.

A method and apparatus are disclosed for aligning the coupling an optical laser fiber using an alignment structure. The disclosed alignment structure accepts an optical fiber having a beam and a detection apparatus. According to one aspect of the teachings, the detection apparatus has a tapered form having a circular cross section at one end to match the laser aperture, and a circular cross section at the other end to match the fiber core.

A communication assembly (100, 200, 300) configured for use in a connection system suitable for transmission of power with voltage levels greater than or equal to 1 KV is provided. The communications assembly comprises an outer housing portion (102, 202, 302) configured to be mounted at a mounting location of the connection system, and an inner portion (104, 204, 304) positioned in the outer housing portion, the inner portion comprising a connection end (106, 206, 306) and being configured to provide at least one path for transmission of a communications signal, the connection end comprising at least one fibre optic connector (110, 210, 310). A communication system (700) and a connection component (900) are also provided, each configured for use in a connection system suitable for transmission of power with voltage levels greater than or equal to 1 kV.

There is provided a multi-clad fiber assembly for reducing and eliminating deleterious laser-contaminant interrelations, and methods of making these assemblies. There is provided an optical connector having contaminants that are shielded from causing detrimental thermal effects, during laser beam transmittion, by preventing laser-contaminant interactions.