Patent application number | Description | Published |
20090252469 | Dispersion-Shifted Optical Fiber - A dispersion-shifted optical fiber (NZDSF) includes a central core (r | 10-08-2009 |
20090279835 | Single-Mode Optical Fiber Having Reduced Bending Losses - A single-mode optical fiber includes a central core, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius r | 11-12-2009 |
20090279836 | Bend-Insensitive Single-Mode Optical Fiber - A single-mode optical fiber includes a central core, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius r | 11-12-2009 |
20100189397 | Single-Mode Optical Fiber - An optical fiber includes a central core, which has a radius r | 07-29-2010 |
20100189399 | Single-Mode Optical Fiber Having an Enlarged Effective Area - A single-mode optical fiber includes a central core, a first inner cladding, a second inner cladding, and an outer cladding. The optical fiber, at a wavelength of 1550 nanometers, has an effective area greater than or equal to 100 μm | 07-29-2010 |
20100189400 | Single-Mode Optical Fiber - A single-mode optical fiber possesses, at a wavelength of 1550 nanometers, an effective area greater than about 90 μm | 07-29-2010 |
20100290781 | Microbend-Resistant Optical Fiber - Disclosed is an improved, single-mode optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. | 11-18-2010 |
20110044595 | Transmission Optical Fiber Having Large Effective Area - The present invention relates to a transmission optical fiber. The optical fiber includes, from its center to its periphery a central core, an intermediate cladding, and a depressed cladding. The optical fiber has an effective area (S | 02-24-2011 |
20110085770 | SINGLE MODE OPTICAL FIBER WITH DEPRESSED TRENCH - An optical fiber having a core and an outer cladding, the core including from its center outward a central core having a radius and a refractive index difference with respect to the outer cladding, and a depressed inner cladding. The depressed inner cladding includes at least a first portion having a radius and a refractive index difference with respect to the outer cladding, the first portion preferably being adjacent to the central core, and a second portion adjacent to the first portion constituting a depressed trench having a radius, and a refractive index difference with respect to the outer cladding. The first portion of the inner cladding has a refractive index below the refractive index of the outer cladding, and the depressed trench has a refractive index that is lower than the refractive index of the first portion of the depressed inner cladding. The outer radius of the depressed inner cladding of the optical fiber is between 28 μm and 40 μm, the LP | 04-14-2011 |
20110135262 | Multimode Optical Fiber with Low Bending Losses and Reduced Cladding Effect - The present invention embraces an optical fiber that includes a central core having an alpha-index profile with respect to an outer cladding. The optical fiber also includes an inner cladding, a depressed trench, and an outer cladding. Typically, the alpha-index profile of the central core is interrupted at a point having a positive refractive index difference with respect to the outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth with a reduced cladding effect for high-data-rate applications. | 06-09-2011 |
20110135263 | High-Bandwidth Multimode Optical Fiber Having Reduced Bending Losses - The present invention embraces a multimode optical fiber that includes a central core having an alpha-index profile, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the central core's alpha-index profile has a minimum refractive index at the central core's radius that corresponds to a refractive index difference with respect to the outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth with a reduced cladding effect for high-data-rate applications. | 06-09-2011 |
20110135264 | Bend-Insensitive Single-Mode Optical Fiber - The present invention embraces a single-mode optical fiber that, at a wavelength of 1550 nanometers, has bending losses of 0.15 dB/turn or less for a radius of curvature of 5 millimeters. | 06-09-2011 |
20110188823 | Non-Zero Dispersion Shifted Optical Fiber Having a Short Cutoff Wavelength - A non-zero dispersion shifted optical fiber (NZDSF) includes a central core, an inner cladding, and an outer cladding. The central core has an outer radius r | 08-04-2011 |
20110217012 | Broad-Bandwidth Multimode Optical Fiber Having Reduced Bending Losses - A multimode optical fiber includes a central core, an inner cladding, a buried trench, and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a glass-based central core having an alpha-index profile (i.e., a graded-index profile), an outer radius r | 09-08-2011 |
20110286710 | Single Mode Optical Fiber - An optical transmission fiber comprises a central core having an index difference Δn | 11-24-2011 |
20120183268 | Single-Mode Optical Fiber Having Reduced Bending Losses - A single-mode optical fiber includes a central core, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius r | 07-19-2012 |
20120189258 | Microbend-Resistant Optical Fiber - Disclosed is an improved, single-mode optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. | 07-26-2012 |
20120195549 | Broad-Bandwidth Optical Fiber - The present invention embraces an optical fiber that includes a central core having an alpha refractive index profile with respect to an outer optical cladding. The optical fiber also includes an inner cladding and a buried trench. The central core includes a core matrix doped with at least fluorine and a dopant element that increases refractive index. The optical fiber typically has reduced bending losses and cladding effect as well as a high bandwidth at the wavelengths of 850 nanometers and 1300 nanometers for high-data-rate applications. | 08-02-2012 |
20120195561 | Multimode Optical Fiber - A multimode optical fiber includes a central core having a graded-index profile with a delta value of about 1.9 percent or greater. The graded-index core profile has at least two different alpha parameter values along the core radius, namely a first value in an inner zone of the central core and a second value in an outer zone of the central core. The second alpha parameter value is typically less than the first alpha parameter value. The graded-index core profile and its first derivative are typically substantially continuous over the width of the graded-index core. | 08-02-2012 |
20120243843 | Bend-Resistant Multimode Optical Fiber - A multimode optical fiber includes a central core surrounded by an outer cladding. The central core has a graded-index profile with respect to the outer cladding and an outer radius r | 09-27-2012 |
20120251062 | Multimode Optical Fiber - A multimode optical fiber includes a central core surrounded by an outer cladding. The central core has a graded-index profile with respect to the outer cladding and an outer radius r | 10-04-2012 |
20120275751 | High-Bandwidth, Radiation-Resistant Multimode Optical Fiber - A multimode optical fiber includes a central core and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a depressed, central core having an alpha-index profile (i.e., a graded-index profile), an outer radius r | 11-01-2012 |
20120301093 | Single-Mode Optical Fiber - A single-mode optical fiber includes a central core surrounded by an outer cladding. The optical fiber includes at least first and second depressed claddings positioned between the central core and the outer cladding. The central core typically has a radius of between about 3.5 microns and 5.5 microns and a refractive-index difference with the outer cladding of between about −1×10 | 11-29-2012 |
20120315006 | Single-Mode Optical Fiber - A single-mode optical fiber includes a central core surrounded by an outer optical cladding. The optical fiber includes an inner depressed cladding, a ring, and an outer depressed cladding positioned between the central core and the outer optical cladding. The central core typically has a refractive-index difference (Dn | 12-13-2012 |
20130004135 | Multimode Optical Fiber - A depressed graded-index multimode optical fiber includes a central core, an inner depressed cladding, a depressed trench, an outer depressed cladding, and an outer cladding. The central core has an alpha-index profile. The depressed claddings limit the impact of leaky modes on optical-fiber performance characteristics (e.g., bandwidth, core size, and/or numerical aperture). | 01-03-2013 |
20130028564 | Trench-Assisted Multimode Optical Fiber - A trench-assisted, multimode optical fiber includes a central core having an alpha refractive index profile with respect to an outer cladding. The optical fiber also includes an inner cladding, a depressed trench, and an outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth. | 01-31-2013 |
20130100437 | METHOD OF COMPUTING AN EFFECTIVE BANDWIDTH OF A MULTIMODE FIBER - A method of assessing the power penalty at a given bit error rate of a multimode fiber including measuring a set of elementary fiber responses corresponding to different offset launches of light over the core radius into the multimode fiber, generating a global fiber response by applying, to the set of elementary fiber responses, a set of weighting coefficients and delays depending on the different offset launches of the elementary fiber responses, and computing a parameter representative of a fiber power penalty from the global fiber response, wherein the set of weighting coefficients includes several subsets of weighting coefficients time delayed relative to one another, wherein at least one relative time delay is not set to zero, and wherein weighting coefficients of each subset depend on the different offset launches of the elementary fiber responses. | 04-25-2013 |