Air-cooled plug part for an optical waveguide

A plug part for an optical waveguide, comprising:

• a housing having a longitudinally extending outer side wall and enclosing a length of optical waveguide terminating at an exposed front face within the housing, said housing having cooling medium inlet and outlet openings longitudinally spaced along the housing enabling circulation of a gas cooling medium in the housing between the inlet and outlet openings;
• a cooling collar extending inside and along a portion of the side wall of the housing adjacent to and at least along a length of the optical waveguide including the front face thereof;
• a protective glass closing and secured to an end of the housing side wall opposite said end, the protective glass having an inner surface facing towards the front face of the optical waveguide and arranged so as to be at least partially exposed to a cooling medium circulating in the housing between said inlet and outlet openings,
• said front face of the optical waveguide also located and arranged so as to be exposed to a circulating cooling medium in the housing between said inlet and outlet openings,
• wherein the optical waveguide is bared at least along a part of its length in the interior of the housing, leaving the exposed front face of the optical waveguide freely accessible.

A plug part for an optical waveguide, comprising:

• a housing having a longitudinally extending outer side wall and enclosing a length of optical waveguide terminating at an exposed front face within the housing, said housing having cooling medium inlet and outlet openings longitudinally spaced along the housing enabling circulation of a gas cooling medium in the housing between the inlet and outlet openings;
• a cooling collar extending inside and along a portion of the side wall of the housing adjacent to and at least along a length of the optical waveguide including the front face thereof;
• a protective glass closing and secured to an end of the housing side wall opposite said end, the protective glass having an inner surface facing towards the front face of the optical waveguide and arranged so as to be at least partially exposed to a cooling medium circulating in the housing between said inlet and outlet openings,
• said front face of the optical waveguide also located and arranged so as to be exposed to a circulating cooling medium in the housing between said inlet and outlet openings,
• including a conical prism located in the interior of the housing adjacent the front face of the optical waveguide, said prism located and arranged so as to be exposed to circulating cooling medium within the cooling collar along surfaces of the prism.