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Quartz-based optical fiber with a lens and its manufacturing method

  • US 5,459,803 A
  • Filed: 02/15/1994
  • Issued: 10/17/1995
  • Est. Priority Date: 02/18/1993
  • Status: Expired due to Term
First Claim
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1. A quartz-based optical fiber with a lens comprising:

  • a core which is comprised of a first quartz-based glass,a clad which surrounds the core, the clad being comprised of a second quartz-based glass,the first quartz-based glass of the core having a lower etching speed with respect to a hydrofluoric acid etching solution than that of the second quartz-base glass of the clad,the core forming a lens section with a curved surface projecting from an end surface of the clad, andsaid clad being free of any tapered portion, at least one portion of the end surface of the clad being a flat surface and which is perpendicular to an axial length direction of the optical fiber.

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