| Patent application number | Description | Published |
|---|
| 20080279515 | Optical fiber containing alkali metal oxide - Disclosed is an optical fiber having a silica-based core comprising an alkali metal oxide a silica-based core, said core comprising an alkali metal oxide selected from the group consisting of K | 11-13-2008 |
| 20080279517 | 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 R | 11-13-2008 |
| 20080285753 | System for passive scrambling and unscrambling of an optical signal - A system for passively scrambling and unscrambling a, pulse optical signal transmitted through a multi-mode optical fiber is provided. The system includes a scrambling unit connected between a signal receiving end of said transmission fiber and an optical signal source that includes an optical fiber which creates a differential delay between two groups of optical modes of the signal that is at least one bit period long such that said optical signal is passively scrambled, and an unscrambling unit connected to a signal transmitting end of said transmission fiber having an optical fiber that counteracts said differential delay between said two groups of optical modes of the signal such that said optical signal is passively unscrambled. The scrambling unit optical fiber has an alpha profile with a complementary perturbation that creates the differential delay between two groups of optical modes of the signal, and the unscrambling unit optical fiber has an alpha profile with reversal complementary perturbation that counteracts the differential delay between said two groups of optical modes of the signal. Alternatively, the scrambling and unscrambling units may have the combination of a mode splitter that splits the signal into two different groups of optical modes, and a pair of optical fibers that conduct the two groups of optical modes in parallel, the fibers being of different lengths to create or to counteract a differential delay in the two groups of modes. | 11-20-2008 |
| 20080304800 | Optical fiber with large effective area - An optical fiber comprising: a glass core extending from a centerline to a radius R | 12-11-2008 |
| 20090080843 | Polarization Maintaining And Single Polarization Optical Fiber - An optical fiber, comprising: (i) a core having a core center and a radius or a width a, (ii) a cladding surrounding the core, and (iii) at least one stress member situated proximate to the fiber core within the cladding, said stress member comprising silica co-doped with F and at least one dopant selected from the list consisting of: GeO | 03-26-2009 |
| 20090219516 | Fiber Optic Sensing System, Method of Using Such and Sensor Fiber - An embodiment of a sensor fiber includes: at least two fiber sections with a plurality of holes; and at least one other fiber section situated between said at least two fiber sections, wherein the at least one other fiber sections being without the plurality of holes. | 09-03-2009 |
| 20100040336 | Multimode Fiber With At Least Dual Cladding - Multimode optical fiber is disclosed herein having a core surrounded by first and second annular cladding regions. The second annular cladding region has a maximum relative refractive index that is at least 0.05% higher than the minimum relative refractive index of the first annular cladding region. | 02-18-2010 |
| 20100046899 | 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 R | 02-25-2010 |
| 20100085558 | Detection System and Optical Fiber for Use in Such System - A detection system comprising: (i) an optical fiber, the optical fiber having (a) a length L≧1 km; (b) beat length between 10 m and 100 m; and (c) beat length uniformity over any distance of at least 100 m within the length L is characterized by standard deviation σ, where |σ|≦10 m; (ii) an OTDR coupled to the fiber and including (a) a radiation source providing pulsed radiation to the fiber, (b) a detection system capable of detecting radiation that is backscattered back through the fiber; and (iii) at least one polarizer situated between the fiber and the detector, such that the backscattered radiation passes through the polarizer before reaching the detector. | 04-08-2010 |
| 20100086271 | Ultra Low PMD Fibers and Method of Making - A method for making low PMD fiber comprising the steps of: (i) making an initial fiber preform; (ii) modifying said initial fiber preform to introduce higher birefringence than that of the initial fiber preform into modified preform; and (iii) drawing an optical fiber from the modified preform and bi-directionally spinning the drawn fiber during draw. | 04-08-2010 |
| 20100142890 | +Cylindrical Polarization Beams - Generation of a cylindrically polarized light beam, and in particular, a hybrid-azimuthal-radial polarization beams, called HARP modes, generated from an input linearly polarized Gaussian beam using a spun optical waveguide device is taught. The HARP modes are comprised of hybrid-azimuthal polarization (HAP) and hybrid-radial polarization (HRP) superposition modes. These beams possess a non-zero local angular momentum density that is spatially varying and a zero total angular momentum. | 06-10-2010 |
| 20100195966 | Large Effective Area Fiber With GE-Free Core - According to some embodiments an optical waveguide fiber comprises:
| 08-05-2010 |
| 20100272406 | Bend Resistant Multimode Optical Fiber - Bend resistant multimode optical fibers are disclosed herein. Multimode optical fibers disclosed herein comprise a core region and a cladding region surrounding and directly adjacent to the core region, the cladding region comprising a depressed-index annular portion comprising a depressed relative refractive index. | 10-28-2010 |
| 20100277719 | Intrusion Detecting System With Polarization Dependent Sensing Elements - A detection system includes a length of optical fiber and an OTDR coupled to the optical fiber. The OTDR includes a radiation source providing pulsed radiation to the fiber, a detector detecting radiation that is backscattered through the fiber, and a processor capable of analyzing the variation of the radiation that is backscattered through the fiber. At least two polarization dependent sensing elements are positioned along the length of optical fiber. | 11-04-2010 |
| 20110129191 | LARGE EFFECTIVE AREA FIBER - An optical fiber with a glass core extending from a centerline to a radius R | 06-02-2011 |
