Hollow core optical fiber array launcher with sealed lens block

A beam combiner array assembly comprising:

• an array block including a back wall having a thickness and a front surface, said array block including a plurality of aligned and sealed channels extending from the back wall to the front surface, wherein a bore extends through the back wall and into each channel;
• a lens array including a plurality of lenses, said lens array being mounted to the front surface of the block so that one of the lenses is aligned with each channel;
• and
• a plurality of hollow core fibers where a separate one of the fibers extends through one of the one of the bores in the back wall so that an end of the fiber is positioned within the channel.

An optical device comprising:

• an optical block including at least one sealed channel, wherein a bore extends into the channel;
• at least one lens mounted to the block so that the lens is aligned with the channel;
• and
• at least one hollow core fiber extending through the bore so that an end of the fiber is positioned within the channel, wherein a beam that propagates down the fiber is emitted into the channel, focused by the lens and emitted from the device.