| http://www.w3.org/ns/prov#value | - The optical fibers can be positioned, for example, by placing a coupler half 184 or 186 under a microscope and positioning a sheet of glass or other transparent material across the diagonal face of the coupler half 184 or 186 and bonding the optical fibers 148, 150 and 152 in the appropriate holes with the end face of the fibers abutting the lower surface of the transparent sheet.
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