Patent
1983-10-28
1985-12-10
Sikes, William L.
350 9610, 350 9620, 350 9615, 65 41, 65 42, 65 421, G02B 514
Patent
active
045575576
ABSTRACT:
A method for fabricating an optical attenuator includes the following steps. Measuring the magnitude of optical loss imposed on an optical signal transmitted through first and second abutted optical fibers. Aligning the abutted ends of the first and second optical fibers for minimum distributed optical signal loss through both optical fibers, as measured at the far end of the second optical fiber. Heating the abutted ends of the first and second optical fibers into a plastic state. Physically distorting the optical fiber ends until the measured optical signal loss increases by a desired additional lumped optical loss value. Cooling the abutted ends of the first and second optical fibers to form a fusion splice imposing the desired additional lumped optical loss value between the ends of the first and second optical fibers.
REFERENCES:
patent: 3825319 (1974-07-01), Cook
patent: 4261640 (1981-04-01), Stankos
Hatakeyama et al., "Fusion Splices for Single Mode Optical Fibers", IEEE J. of Quant. Elect., vol. QE-14, No. 8, 8/78, pp. 614-619.
Bisbee, "Splicing Silica Fibers with an Electric Arc", Applied Optics, vol. 15, No. 3, 3/76, pp. 796-798.
Gleason Robert F.
McLay John
AT&T Bell Laboratories
Havill Richard B.
Healy Brian M.
Sikes William L.
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