Patent application number | Description | Published |
20080267229 | Optical fiber, optical fiber production method and optical fiber production system - An optical fiber includes a rare-earth element-added core for serving as a gain medium, and a cladding formed on a periphery of the core. Pump light propagated through the cladding is coupled into the core. The cladding is in an undulation shape in the longitudinal direction of the cladding. The undulation shape of the cladding is formed according to a grating period at which the pump light is totally reflected and propagated in the cladding. The core includes an undulation shape in a longitudinal direction of the core. The cladding includes an undulating inner cladding, and an outer cladding provided on a periphery of the inner cladding. The core and/or the cladding is circular or abnormally circular in its transverse cross section. | 10-30-2008 |
20090052476 | Optical fiber for an optical fiber laser, method for fabricating the same, and optical fiber laser - The optical fiber | 02-26-2009 |
20090052840 | Optical waveguide type optical coupling arrangement - A plurality of light emitting elements | 02-26-2009 |
20090080472 | Optical fiber for an optical fiber laser, method for fabricating the same, and optical fiber laser - The optical fiber | 03-26-2009 |
20090129411 | OPTICAL FIBER LASER AND EXCITING METHOD USING SAME - An optical fiber laser, according to the present invention, has an optical fiber including a core to which a rare earth element is added and a clad disposed around the core, and also has an excitation light source for emitting excitation light incident on a side of the optical fiber. The optical fiber has a corrugated shape on the outer circumference of the clad along the longitudinal direction thereof; and the optical fiber is wound in a spiral form and is bundled in such a way that adjacent sides of the clad are brought into contact with one another. | 05-21-2009 |
20090208175 | HOLLOW FIBER AND METHOD FOR FABRICATING SAME - A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution. | 08-20-2009 |
20090316733 | OPTICAL FIBER FOR A FIBER LASER AND FIBER LASER USING THE SAME - The present invention provides an optical fiber, for use in a fiber laser, from which a high-quality single-mode laser beam with high optical power is obtained and also provides a fiber laser that uses the optical fiber. The novel optical fiber, which includes a core to which a rare earth element is doped and a cladding formed around the core, amplifies excitation light to oscillate a laser beam. A mode filter is formed at a predetermined position in the longitudinal direction of the optical fiber. | 12-24-2009 |
20110317970 | HOLLOW FIBER - A hollow fiber has a hollow tube, a reflecting film formed on an inner wall of the hollow tube, and the reflecting film is a first metal film formed by baking a first metal nano particle solution including a first metal nano particle. The hollow fiber may have a transparent film on the first metal film. The transparent film is formed by baking or chemically reacting from a second metal nano particle included in a second metal nano particle solution. | 12-29-2011 |