Wet chemical etching technique for optical fibers

Details Wet chemical etching technique for optical fibers Wet chemical etching technique for optical fibers

1991-12-23

1993-04-06

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156626, 156657, 156663, 252 793, 252 794, B44C 122, C03C 1500, C03C 2506

Patent

active

052000249

ABSTRACT:
A wet chemical etching technique is disclosed for forming a lensed optical fiber. In particular, the fiber is placed in a mixture comprising buffered hydrofluoric acid (e.g., HF and NH.sub.4 F) and a treating agent comprising acetic acid or citric acid. The relative concentrations of the constituents are adjusted so that a double conical lens is formed which requires no further operations (such as fire polishing) to provide coupling efficiencies of about 80% with a standard deviation of less than .+-.2%.

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