| 摘要 |
PURPOSE:To form a liquid core fiber having an amplifying wavelength adapted for the wavelength of a signal light of a present optical communication by filling a core containing substance exhibiting an optical amplification by exciting with a light as liquid having light transmission properties in a tubular clad 2 made of a material having lower refractive index than that of the liquid. CONSTITUTION:A core 1 is formed by adding, for example, Er ions and Nd ions to liquid having light transmission properties such as tetrachloroethylene, etc., and mixed. A clad 2 is formed in a tubular state of substance having lower refractive index than that of the liquid 1. This substance includes, for example, glass. The clad 2 is formed in a tube having a small diameter by drawing pure silica glass. Light emitting properties of a liquid core fiber 3 in which the core 1 is sealed in the clad 2 correspond to gain characteristic of an optical amplifier. |
