Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1981-08-03
1983-05-17
Fisher, Richard V.
Glass manufacturing
Processes
Forming product or preform from molten glass
65152, C03B 2320
Patent
active
043838448
ABSTRACT:
A method for fusion-splicing aligned optical fibers using heat generated by gas discharge produced between electrodes which are energized by an AC voltage. At first, a high trigger voltage is applied across the electrodes to generate the discharge, after which an AC voltage lower than the trigger voltage is applied across the electrodes to produce steady-state discharge. The AC voltage is selected to satisfy the relation, 10t.sub.O .gtoreq.(t.sub.f +t.sub.d +t.sub.r), where t.sub.O is the time necessary for ions created by the discharge to flow from one of the electrodes to the other and t.sub.f, t.sub.d and t.sub.r are the fall time, the quiescent time and the rise time of the AC voltage. Alternatively, a sine-wave AC voltage is used having a frequency higher than 500 Hz.
REFERENCES:
patent: 3960531 (1976-06-01), Kohanzadeh et al.
Hatakeyama et al., "Fusion Splices . . . By Discharge Heating", Review of the Electrical Comm. Labs., vol. 27, Nos. 7-8, Jul.-Aug. 1979, pp. 532-542.
Kashima Norio
Nihei Fumihiro
Fisher Richard V.
Nippon Telegraph & Telephone Public Corporation
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