Stock material or miscellaneous articles – Hollow or container type article – Glass – ceramic – or sintered – fused – fired – or calcined metal...
Patent
1997-02-07
1999-08-24
Robinson, Ellis
Stock material or miscellaneous articles
Hollow or container type article
Glass, ceramic, or sintered, fused, fired, or calcined metal...
428 344, 428 345, 428428, 428212, 385124, 385127, A47G 1922, G02B 602, B32B 702, B32B 900
Patent
active
059422963
ABSTRACT:
Disclosed is an optical fiber possible to prevent it from increasing an optical loss occurring during fabrication of a single mode fiber preform and extraction thereof and enhance an optical transmission efficiency, a method of producing the same comprising the steps of forming a first quartz tube having a first thermal conductivity, said first quartz tube being used as a clad; depositing a core layer and a clad layer inside said first quartz tube to form a preliminary perform by heating of said fist quartz tube; forming a second quartz tube having a second thermal conductivity lower than said first thermal conductivity; and depositing said second quartz tube to said preliminary preform by heating to produce said optical fiber preform.
REFERENCES:
patent: 4165915 (1979-08-01), Rau et al.
patent: 4772303 (1988-09-01), Kamiya et al.
patent: 4978377 (1990-12-01), Brehm
Optical Fiber Communication, Feb. 20-25, 1994 vol. 4, 1994 Technical Digest Series, Conference Edition.
Heat Transfer, Seventh Edition in Si Units by J.P. Holman, McGraw-Hill Book Company. (pp. 151-155).
Doh Gyun-Hae
Kang Sun-Woong
Oh Seung-Hun
Bushnell Esq. Robert E.
Hayes Jennifer M.
Robinson Ellis
Samsung Electronics Co,. Ltd.
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