Thermally fused integral ferrule and its manufacturing method, and fiber array manufacturing method
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United States of America Patent
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Feb 11, 2003
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Dec 21, 1998
filing date -
Dec 26, 1997
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Abstract
There is provided a thermally fused integral ferrule in which a first glass substrate is at least partly unitarily combined with a second glass substrates by means of thermal fusion. The first glass substrate includes optical-fiber fixing V-shaped grooves on its side opposed to the second glass substrate, and also includes on the optical-fiber fixing V-shaped grooves in the first glass substrate, a guide section having a predetermined void between the first and second glass substrates. The thermally fused integral ferrule is manufactured by contacting the surface to be thermally fused of the first glass substrate in which the optical-fiber fixing V-shaped grooves are formed, with the surface to be thermally fused of the second glass substrate, followed by thermal fusion of the surfaces of the first and second glass substrates at a temperature of (Tg1-100) to (Tg2+150).degree. C. (where Tg1 is the glass transition temperature of one of the first and second glass substrates that is higher than that of the other and Tg2 is the lower glass transition temperature).
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