Bizarre Patents
Vehicular Impact Signaling Device
An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8189978 | High numerical aperture multimode optical fiber Bend resistant multimode optical fibers are disclosed herein. Multimode optical fibers disclosed herein comprise a core region having a radius greater than 30 microns and a cladding region surrounding and directly adjacent to the core region, the cladding region com... | 05/29/2012 |
| 8145025 | 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 r1 and a positive refractive index difference Δn1 with the optical cladding. The... | 03/27/2012 |
| 8139912 | Double clad optical fiber having ring core surrounding core for high power operation An optical fiber apparatus having a wavelength of operation comprises an optical fiber comprising a core; a pump cladding disposed about the core for receiving pump optical energy having a pump wavelength; and a second cladding disposed about for tending to confine ... | 03/20/2012 |
| 8131125 | 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. ... | 03/06/2012 |
| 8116607 | Rare-earth doped optical fiber, method of producing the same, and fiber laser A rare-earth doped optical fiber that includes a core and one or more clad layers surrounding the core, in which the core has a rare earth dopant, and a relationship of Equation (1) is satisfied: ... | 02/14/2012 |
| 8111963 | Large diameter optical waveguide, grating and laser A large diameter optical waveguide, grating, and laser includes a waveguide having at least one core surrounded by a cladding, the core propagating light in substantially a few transverse spatial modes; and having an outer waveguide dimension of said waveguide being... | 02/07/2012 |
| 8107783 | Stretcher fiber and module A stretcher fiber includes a core region, inner trench region, ring region, outer trench region, and outer cladding region. The core region has a radius r1, a refractive index n1, and a positive effective refractive index Δn1 with r... | 01/31/2012 |
| 8107784 | Reduced bend sensitivity and catastrophic bend loss in single mode optical fibers and method of making same An optical fiber that is relatively insensitive to bend loss and alleviates the problem of catastrophic bend loss comprises a core region and a cladding region configured to support and guide the propagation of light in a fundamental transverse mode. The cladding re... | 01/31/2012 |
| 8103143 | Single-mode optical fiber Disclosed is an optical transmission fiber having reduced bending and microbending losses that is commercially usable in FTTH or FTTC transmission systems. ... | 01/24/2012 |
| 8073301 | Low loss optical fiber designs for confining optical power to low-doped regions The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelo... | 12/06/2011 |
| 8055111 | Dispersion-shifted optical fiber A dispersion-shifted optical fiber (NZDSF) includes a central core (r1, Dn1), an inner cladding having at least three zones with a first intermediate cladding zone (r2, Dn2), a second ring zone (r3, Dn3 | 11/08/2011 |
| 8031999 | Photonic band-gap fiber A photonic band-gap fiber comprises a first core having a refractive index that is not higher than a refractive index of a clad; a second core that is disposed so as to surround the first core and has a refractive index that is lower than the refractive index of the... | 10/04/2011 |
| 7970248 | Photonic bandgap fibers Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber ... | 06/28/2011 |
| 7941022 | Single fiber optical links for simultaneous data and power transmission In one embodiment, a fiber optic link includes a combined optical link for transmitting high optical power and wide bandwidth signal through a single optical fiber. In one embodiment, a means is provided for combining a high power optical signal and a low power data... | 05/10/2011 |
| 7916991 | Optical fiber having cladding scattering centers In an optical fiber (1) for the transmission of high-power laser radiation, with a fiber core (2), with an inner fiber cladding (3) surrounding the fiber core (2) for carrying the laser radiation in the fiber core (2), with a first... | 03/29/2011 |
| 7907810 | Optical fiber having wave-guiding rings A waveguide includes a cladding region that has a refractive index that is substantially uniform and surrounds a wave-guiding region that has an average index that is close to the index of the cladding. The wave-guiding region also contains a thin ring or series of ... | 03/15/2011 |
| 7899293 | Single-mode optical fiber Disclosed is an optical transmission fiber having reduced bending and microbending losses that is commercially usable in FTTH or FTTC transmission systems. ... | 03/01/2011 |
| 7894698 | Optical fiber An improved optical fiber achieves both reduced bending and microbending losses, as well as a much higher Brillouin threshold, as compared to standard transmission fibers. The optical fiber comprises a core including at least two dopants and having a refractive inde... | 02/22/2011 |
| 7894697 | Optical fiber, optical transmission line, optical module, and optical transmission system The present invention relates to an optical fiber which has a structure for further increasing an FOM (=|dispersion|/loss) and which can be applied to a dispersion compensation module. The optical fiber is mainly composed of silica glass and has a core region includ... | 02/22/2011 |
| 7889960 | 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 r1 and a positive refractive index difference Δn1 with the optical cladding. The... | 02/15/2011 |
| 7853110 | Large effective area optical fiber An optical fiber comprising: (i) a glass core (20) extending from a centerline and including a central core region (22) with an alpha value of less than 2, a first annular core region (24)surrounding the central core region (22), and a se... | 12/14/2010 |
| 7853109 | Single mode optical fiber A single mode optical fiber comprises: (i) a segmented core having at least three segments and (ii) a silica based clad layer surrounding and in contact with the core, the clad layer having a refractive index nc. The first segment has a Δmax %... | 12/14/2010 |
| 7835609 | Optical fiber and optical fiber preform An optical fiber is constituted by: a three-layer structured core which includes, a first core (having a relative refractive index difference of Δ1 in a region of a radius of R1), a second core (having a relative refractive index difference of Δ2 | 11/16/2010 |
| 7773847 | Multimode optical fiber A core part of a multimode optical fiber including the core part and a cladding part has a structure composed of a plurality of concentric layers in which a refractive index is decreased stepwise from a first core layer as an innermost layer to a third core layer as... | 08/10/2010 |
| 7773848 | Low bend loss single mode optical fiber Optical waveguide fiber that is bend resistant and single mode at 1260 nm and at higher wavelengths. The optical fiber includes a core of radius R1 and cladding, the cladding having an annular inner region of radius R2, an annular ring region, ... | 08/10/2010 |
| 7756375 | Optical fiber and waveguide A core region is doped with an impurity. A first cladding region is formed in a layered structure around the core region, including a microstructure. A second cladding region is formed in a layered structure around the first cladding region, including a homogeneous ... | 07/13/2010 |
| 7720340 | Device for coupling radiation into or out of an optical fibre A device for coupling multimode pump light and a laser signal into or out of a cladding-pumped fibre laser is disclosed, comprising an output optical fibre, a substantially un-tapered feed-through optical fibre, an annular waveguide having a tapered section, and a p... | 05/18/2010 |
| 7715674 | Optical fiber and waveguide An optical fiber in which the macro-bending loss is lowered while an MFD is maintained large, and a waveguide including the optical fiber. The optical fiber includes a core region doped with an impurity; a first cladding region formed as a layer around the core regi... | 05/11/2010 |
| 7702205 | Optical fiber A relative refractive index difference Δ1 between a center core region and a cladding layer is 0.30% to 0.35%, a relative refractive index difference Δ2 between an outer core layer and the cladding layer is −0.10% to −0.04%, and Δ1:Δ2 is... | 04/20/2010 |
| 7689085 | Large effective area fiber with GE-free core An optical waveguide fiber comprising: (i) a Ge free core having an effective area of 90 μm2 to 160 μm2, at a 1550 nm wavelength, and α value 12≦α≦25, said core comprising: (a) a central core region extending radially outw... | 03/30/2010 |
| 7680381 | Bend insensitive optical fibers An optical fiber includes a core, an inner cladding and a low index ring of silica-based glass. The core comprises silica-based glass, an index of refraction n1, and a relative refractive index percent Δ1% relative to pure silica glass. The in... | 03/16/2010 |
| 7672557 | Optical fiber and a method for fabricating a low polarization-mode dispersion and low attenuation optical fiber A method of fabricating an optical waveguide fiber that includes the steps of providing a cylindrical glass optical fiber preform having a longitudinally extending centerline hole, and closing the hole under conditions suitable to result in uniform and symmetric hol... | 03/02/2010 |
| 7657142 | Method for making an optical fiber comprising nanoparticles and preform used in the manufacture of such a fiber The invention concerns a method for making an optical fiber (18) including the following steps: producing a preform (10) containing nanoparticles provided with an active element including at least one recess (14) proximate at least part of the n... | 02/02/2010 |
| 7634164 | Fiber optic article with inner region A fiber optic article can comprise a core, an inner region disposed about the core and a cladding disposed about the inner region. The index of refraction of the cladding can be less than that of the inner region, and the index of refraction of the inner region can ... | 12/15/2009 |
| 7603014 | Method for the manufacture of optical fibers and improved optical fibers The present invention is directed to a universal channel dispersion compensating fiber (CDCF) for WDM channel compensation that provides essentially zero dispersion slope over the wide wavelength band used in state-of-the-art transmission systems. It allows compensa... | 10/13/2009 |
| 7603015 | Optical fiber with large effective area An optical fiber comprising: a glass core extending from a centerline to a radius R1; a glass cladding surrounding and in contact with the core, the cladding comprising: a first annular region extending from R1 to a radius R2, the fi... | 10/13/2009 |
| 7587111 | Single-mode optical fiber Disclosed is an optical transmission fiber having reduced bending and microbending losses that is commercially usable in FTTH or FTTC transmission systems. ... | 09/08/2009 |
| 7570857 | Low bend loss dispersion slope compensating optical fiber A dispersion compensating optical waveguide fiber that includes a core region surrounded by and in contact with a clad layer, wherein the respective refractive index profiles of the core region and the clad layer can be selected to provide, at a wavelength of 1550 n... | 08/04/2009 |
| 7555186 | Optical fiber An improved optical fiber achieves both reduced bending and microbending losses, as well as a much higher Brillouin threshold, as compared to standard transmission fibers. The optical fiber comprises a core including at least two dopants and having a refractive inde... | 06/30/2009 |
| 7555187 | Large effective area fiber An optical fiber according to an embodiment of the present invention comprises: a glass core extending from a centerline to a radius R1 wherein R1 is greater than about 5 μm; a glass cladding surrounding and in contact with the core, the cladd... | 06/30/2009 |
