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专利名称：Glass preform and method of producing the
same
发明人：Fumio Sato,Akihiko Sakamoto申请号：US103180申请日：20030314公开号：US07026025B2公开日：20060411
专利附图：
摘要：In a glass preform () to be subjected to fiber-drawing, use is made of acylindrical glass tube () whose one end in an axial direction is sealed. A plurality of glasscapillaries () extend in the glass tube in the axial direction. The glass capillaries are fused
to one another into an integral structure. The glass capillaries have air holes periodicallyarranged on a plane perpendicular to the axial direction, respectively.
申请人：Fumio Sato,Akihiko Sakamoto
地址：Moriyama JP,Shiga JP
国籍：JP,JP
代理机构：Collard & Roe, P.C.
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