Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuyuki Miyake0
Syunichiro Yamaguchi0
Tetsuya Yamamoto0
Date of Patent
November 6, 2007
Patent Application Number
10553842
Date Filed
April 16, 2004
Patent Primary Examiner
Patent abstract
A connection end portion of a PC fiber 10 is fused by heating to provide a sealing portion 15 which seals holes 12a of a cladding 12. Length L of the sealing portion 15 is determined by calculation based on the conditions such as an incident angle θ [°] of signal light 22 with respect to the PC fiber 10, an outer diameter D [μm] of the fiber, a diameter a [μm] of the core of the fiber and a refractive index n of the sealing portion 15.
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