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| Number | Title | Issue Date |
| 8023179 | Enhanced continuum generation in nonlinear bulk optic materials In accordance with the present invention, a bulk optic material (for example, silica) is processed to form a spatially microstructured element, such as a photonic bandgap (PBG) structure. An ultra-short laser pulse source is used as an input signal that is applied t... | 09/20/2011 |
| 7940816 | Figure eight fiber laser for ultrashort pulse generation A polarization-maintaining figure eight (PMFE) fiber laser is configured to generate ultrashort (femtosecond) output pulses by intentionally inserting asymmetry (in the form of a phase bias) into the bi-directional loop of the fiber laser. The introduction of asymme... | 05/10/2011 |
| 7856162 | Large mode area fiber amplifiers with reduced stimulated brillouin scattering A large mode area fiber amplifier suitable for high power applications includes a core region specifically configured to allow for high power operation while also limiting the amount of SBS that is generated. The composition of the core region is selected to include... | 12/21/2010 |
| 7854143 | Optical fiber preform with improved air/glass interface structure An optical fiber preform comprising a plurality of longitudinal air holes is subjected to a thermal treatment (i.e., heating), coupled with the application of a compressive force on either end of the heated preform to compress the entire preform structure a predeter... | 12/21/2010 |
| 7831114 | Tunable dispersion compensator with minimum differential group delay In a method and system for providing dispersion compensation in an optical system, there is coupled into the optical system at least one pathway into which there is connected a tunable chirped fiber Bragg grating, each such grating providing a respective tunable amo... | 11/09/2010 |
| 7826499 | Visible continuum generation utilizing a hybrid optical source An all-fiber supercontinuum source is formed as a hybrid combination of a first section of continuum-generating fiber (such as, for example, highly-nonlinear fiber (HNLF)) spliced to a second section of continuum-extending fiber (such as, for example, photonic cryst... | 11/02/2010 |
| 7817684 | Passively modelocked figure eight fiber laser A passively mode-locked, figure-eight laser is formed of all normal dispersion fiber, eliminating the need for using anomalous dispersion fiber. The fiber is selected to be polarization maintaining, with the remaining components of the laser (couplers, isolator, gai... | 10/19/2010 |
| 7817258 | Measuring modal content of multi-moded fibers The output modal content of optical fibers that contain more than one spatial mode may be analyzed and quantified by measuring interference between co-propagating modes in the optical fiber. By spatially resolving the interference, an image of the spatial beat patte... | 10/19/2010 |
| 7778511 | Optical fiber cables An optical fiber cable suitable for drop cable applications has a dual jacket, dual reinforcement layers, a round cross section, and a tight buffered construction. The optical fiber cable is a compact unitary coupled fiber assembly that has a small profile, and is l... | 08/17/2010 |
| 7778498 | Systems and techniques for generating cylindrical vector beams A technique is described for generating a cylindrically polarized beam, e.g., a radially or azimuthally polarized beam. An input optical fiber is provided that supports signal propagation in a fundamental LP01 mode. A mode converter device converts the fu... | 08/17/2010 |
| 7764854 | Optical fiber with specialized index profile to compensate for bend-induced distortions An optical fiber that exhibits reduced mode distortions as the fiber is bent is formed by properly defining its refractive index profile during fabrication. The as-fabricated profile is defined as a “pre-distorted” profile that takes into account the gradient in... | 07/27/2010 |
| 7627219 | Large mode area fiber amplifiers with reduced stimulated brillouin scattering A large mode area fiber amplifier suitable for high power applications includes a core region specifically configured to allow for high power operation while also limiting the amount of SBS that is generated. The composition of the core region is selected to include... | 12/01/2009 |
| 7565048 | Undersea optical fiber transmission systems Described are optical fibers having a relatively large effective area, large negative dispersion coefficient, and relatively low attenuation. These optical fibers are advantageously paired with positive dispersion coefficient optical fibers for blockless undersea ca... | 07/21/2009 |
| 7542649 | Optical fiber line card assembly In a line card assembly, an optical fiber spool is mounted directly onto the back of a line card panel, thereby avoiding the use of a printed circuit board as a structural base. The line card assembly includes a hub having an outer circumference and first and second... | 06/02/2009 |
| 7535934 | Optical continuum source including light generation beyond wavelength edges of continuum An optical continuum source is formed that is used to generate both a continuum and one or more light peaks outside the bandwidth of the continuum. In particular, one or more fiber Bragg gratings exhibiting a resonant wavelength less than the short wavelength edge (... | 05/19/2009 |
