| Patent Number |
Title Of Patent |
Date Issued |
| 7505656 |
Optical fiber and optical fiber device |
March 17, 2009 |
| An optical fiber and an optical fiber device, which can suppress generation of the stimulated Brillouin scattering while maintaining large nonlinearity. The fiber includes a central core which is made of SiO.sub.2 as a main component and contains Al.sub.2O.sub.3 at concentration of 1 |
| 7484387 |
Method of making a microstructured optical fiber |
February 3, 2009 |
| An optical fiber has a section of the first kind having a chromatic dispersion not less than a given positive value x and a negative chromatic dispersion slope at a given wavelength and a section of the second kind has a chromatic dispersion not more than -x and a positive chromatic |
| 7440665 |
Optical fiber |
October 21, 2008 |
| An optical fiber not only can suppress SBS but also can be produced easily. The optical fiber 1 comprises an optical core region 10 including the center axis and an optical cladding region 14 surrounding the optical core region 10. The optical core region 10 is composed of a first region |
| 7153034 |
Method of constructing an optical transmission line and an optical transmission line |
December 26, 2006 |
| The present invention discloses an optical transmission line constructing method comprising the steps of connecting a plurality of optical fibers differing from each other in terms of a transmission characteristic; making inspection light incident on an entrance end of the connected |
| 6922503 |
Optical system module |
July 26, 2005 |
| An optical module comprises a multiplexer for combining a signal and a pump radiation and having an output coupled to an optical fiber and a signal over the optical fiber with the pump lightwave that has a frequency three times of that of the signal and phase index equal to that of the s |
| 6915053 |
Microstructured optical fiber and optical module |
July 5, 2005 |
| A microstructured optical fiber is structured with a core region and a plurality of cladding regions surrounding the core region. Chromatic dispersion is relatively flat over a broad wavelength range with a small effective area, without need for air holes that are unacceptably small. An |
| 6868213 |
Optical fiber and production method therefor |
March 15, 2005 |
| The present invention provides an optical fiber which has a hollow portion extending along the axis and which reduces degradation of the optical characteristics, and a production method thereof. An optical fiber includes a hollow core portion, and a cladding portion which surrounds the |
| 6859598 |
Microstructured optical fiber |
February 22, 2005 |
| In an optical fiber including a core region and cladding regions of not less than three layers which surrounds the core region in order, each of said cladding regions has a mean refractive index different from those of the adjacents regions,at least one of the cladding regions has a lowe |
| 6850679 |
Microstructured optical fiber and method of making |
February 1, 2005 |
| A microstructured optical fiber is structured with a core region and a cladding region surrounding the core region. A cross section of the fiber portion conforms to a translationally symmetric lattice, a center of each sub medium region in the outer region coinciding with respective latt |
| 6766088 |
Optical fiber and method for making the same |
July 20, 2004 |
| An optical fiber has a section of the first kind having a chromatic dispersion not less than a given positive value x and a negative chromatic dispersion slope at a given wavelength and a section of the second kind has a chromatic dispersion not more than -x and a positive chromatic |
| 6718105 |
Optical fiber |
April 6, 2004 |
| In an optical fiber including a core region and a cladding region surrounding said core region in a cross section and having a cross-sectional structure in which a plurality of regions constituted by sub mediums are arranged in main mediums, at least one of refractive indices of the |
| 6661954 |
Optical transmission line including a connected part of optical fibers and connecting method |
December 9, 2003 |
| Provided are an optical transmission line including a connected part of the optical fibers having different refractive index profiles, wherein at least one of the optical fibers has a hollow region, and a method for connecting such optical fibers, wherein connection loss in a connection |
| 6636677 |
Optical fiber |
October 21, 2003 |
| In an optical fiber composed of a core region and a cladding region surrounding the core region and having a plurality of regions made of sub mediums having refractive indices different from a refractive index of a main medium disposed in a main medium constituting this cladding region, |
| 6608955 |
Optical fiber and laser machining apparatus |
August 19, 2003 |
| An optical fiber has a core region and a cladding region surrounding the core region. The core region and the cladding region are made of a base material containing silica glass as a principal component. A plurality of holes extending along an axial direction are arranged at least in the |
| 6606440 |
Microstructured optical fiber |
August 12, 2003 |
| In an optical fiber having a core region and a cladding region which surrounds the core region, wherein a plurality of regions made of sub mediums having refractive index different from that of the main medium constituting the cladding region are spaced apart in cross section of the |
| 6571045 |
Microstructured optical fiber |
May 27, 2003 |
| In an optical fiber having a core region and a cladding region, surrounding the core region, comprising a main medium having different refractive indices from the main medium and spaced apart in the main medium, the core region comprises a central core region having a hollow portion disp |
| 6526209 |
Optical fiber having improved optics and structure |
February 25, 2003 |
| In an optical fiber comprising a core region, an inner cladding region, and an outer cladding region which extend along its fiber axis, the average refractive index n.sub.0 of core region, the average refractive index n.sub.1 of inner cladding region, and the average refractive index n.s |
