초록 ▼

A single-polarization single-mode optical fiber comprises a core made of silica glass, a clad surrounding the core and made of silica glass having a smaller index of refraction than the glass comprising the core, a pair of stress applying members symmetrically disposed on the clad and made of silica

A single-polarization single-mode optical fiber comprises a core made of silica glass, a clad surrounding the core and made of silica glass having a smaller index of refraction than the glass comprising the core, a pair of stress applying members symmetrically disposed on the clad and made of silica glass having different thermal expansion coefficient from that of the clad, spacers interposed between the stress applying members and made of silica glass having substantially the same thermal expansion coefficient as the clad, and a jacket surrounding the spacers, stress applying members. The jacket is also made of silica glass and has a smaller expansion coefficient than the stress applying members. The optical fiber of this invention has an excellent polarization preserving characteristic, low loss, long length, and stable characteristics.

대표청구항 ▼

A method of manufacturing a single-polarization single-mode optical fiber comprising the steps of: preparing a core-cladding assembly including a core member made of silica glass having a first index of refraction, and a cladding member substantially uniformly surrounding said core member and made o

A method of manufacturing a single-polarization single-mode optical fiber comprising the steps of: preparing a core-cladding assembly including a core member made of silica glass having a first index of refraction, and a cladding member substantially uniformly surrounding said core member and made of silica glass having a second index of refraction smaller than said first index of refraction; applying a jacket member about said cladding member to surround the same, said jacket member being made of silica glass; disposing at least one stress applying member comprised of silica glass between an outer periphery of said cladding member and said jacket, wherein each of said stress applying members is disposed at discrete intervals about said outer periphery of said cladding member; and drawing a resulting assembly to bond together said core, cladding, stress applying members and said jacket into an integral optical fiber; wherein said stress applying members cause material stresses in said core so as to change the optical properties of said optical fiber.