AN OPTICAL FIBER AND CORELESS OPTICAL FIBER HAVING A CLADDING LAYER DOPED WITH METAL NANO PARTICLES, AND MANUFACTURING METHOD OF THE SAME

摘要

PURPOSE: An optical fiber having a cladding layer doped with metal nano particles, a coreless optical fiber, and a manufacturing method thereof are provided to apply an optical fiber to an SPR(Surface Plasmon Resonance) sensor through secondary processing. CONSTITUTION: An optical fiber comprises a core layer(10) and a cladding layer(20) enclosing the core layer. The cladding layer is doped with metal nano particles(20a), where a part of the nano particles are exposed outside. The cladding layer is coated with polymer having a refractive index lower than that of the cladding layer.