Class / Patent application number | Description | Number of patent applications / Date published |
359337500 | Dispersion compensation | 22 |
20080198444 | OPTICAL WAVEFORM RESHAPING DEVICE - An optical waveform reshaping device, including a semiconductor optical waveguide which has an active layer, wherein: optical amplification regions and optical absorption regions are installed alternately along the semiconductor optical waveguide; one optical amplification region is set longer than the other optical amplification regions so that a desired amplification factor can be obtained when power of an input optical signal is at an ON level; a power level is maintained by the other optical amplification regions excluding the one optical amplification region and by the optical absorption regions when the power of the input optical signal is at the ON level; and when the power of the input optical signal is at an OFF level, the input optical signal is absorbed by the optical absorption regions so that a power level of an output optical signal will not be higher than the power level of the input optical signal. | 08-21-2008 |
20080204859 | Gires-Tournois Etalons and Dispersion Compensators - A Gires-Tournois etalon (GTE) ( | 08-28-2008 |
20090251769 | APPARATUS FOR SPECTRUM-DOUBLED OPTICAL PARAMETRIC CHIRPED PULSE AMPLIFICATION (OPCPA) USING THIRD-ORDER DISPERSION CHIRPING - The present invention relates to an OPCPA apparatus. The OPCPA of the present invention includes an optical pulse stretcher ( | 10-08-2009 |
20100053733 | METHOD FOR AMPLIFICATION BY SPATIO-TEMPORAL FREQUENCY CONVERSION AND DEVICE FOR CARRYING OUT SAID METHOD - The present invention relates to a method of amplification based on spatio-temporal frequency drift for a pulse laser comprising a so-called CPA (Chirped Pulse Amplification) frequency-shift amplifying chain, the various spectral components spatially spread. The various components separately amplified. | 03-04-2010 |
20100309545 | FIBER CHIRPED PULSE AMPLIFIER WITH NONLINEAR COMPENSATION - A chirped pulse fiber amplifier with nonlinear compensation, includes elements for generating a light pulse having an initial peak-power P | 12-09-2010 |
20110026105 | Dispersion Compensation in Chirped Pulse Amplification Systems - A chirped pulse amplification system includes a laser source providing an input laser pulse along an optical path. The input laser pulse is characterized by a first temporal duration. The system also includes a multi-pass pulse stretcher disposed along the optical path. The multi-pass pulse stretcher includes a first set of mirrors operable to receive input light in a first plane and output light in a second plane parallel to the first plane and a first diffraction grating. The pulse stretcher also includes a second set of mirrors operable to receive light diffracted from the first diffraction grating and a second diffraction grating. The pulse stretcher further includes a reflective element operable to reflect light diffracted from the second diffraction grating. The system further includes an amplifier, a pulse compressor, and a passive dispersion compensator disposed along the optical path. | 02-03-2011 |
20110122484 | STATIC PHASE MASK FOR HIGH-ORDER SPECTRAL PHASE CONTROL IN A HYBRID CHIRPED PULSE AMPLIFIER SYSTEM - A chirped pulse amplification (CPA) system comprises an optical pulse stretcher and an optical pulse compressor that are mismatched in that the optical pulse compressor includes a bulk optical grating while the optical pulse stretcher does not. High order dispersion compensation is provided by an optical phase mask disposed within the optical pulse compressor. | 05-26-2011 |
20110176202 | OPTICAL AMPLIFIER AND OPTICAL AMPLIFYING APPARATUS - An optical amplifier amplifies signal light and includes a pump light source that outputs pump light of a wavelength different from that of the signal light; a combining unit that combines the signal light and the pump light output by the pump light source, to output combined light; an amplifying unit that has non-linear optical media that transmit the combined light to amplify the signal light, the amplifying unit further removing, in the non-linear optical media, idler light generated from the signal light and the pump light, and outputting light that results; and an extraction filter that extracts the signal light from the light output by the amplifying unit. | 07-21-2011 |
20110242646 | DEVICE FOR AMPLIFYING LIGHT PULSES - The present invention relates to a device ( | 10-06-2011 |
20110279889 | SPECTRA SHAPING SCHEME FOR CHIRPED PULSE AMPLIFICATION - A spectrum shaping scheme for chirped pulse amplification (CPA): uses a spectrum decomposing system with CTSI construction, a spectrum synthesizing system with CTSI structure that is symmetrical to the decomposing structure, and a spectrum shaping system including an aperture and a planar reflector for spectrum shaping function design. The scheme includes the following steps: firstly decomposing the spectrum of a chirped temporal pulse laser to a spectral domain; then shaping the spectrum in the spectral domain; finally synthesizing un-shiftily this shaped spectrum in the spectral domain into a temporal chirped pulse with a designed shape. The scheme has the benefit that it can be not only utilized in a general laser spectrum shaping and spectrum modulation, but also can be utilized for a high energy and ultra-high peak-power laser system in chirped pulse amplification with a large caliber and with a chirped pulse bandwidth of a few nanometers. | 11-17-2011 |
20120147457 | PULSE-WIDTH CONVERTING APPARATUS AND OPTICAL AMPLIFYING SYSTEM - An input light pulse Pi, input at a constant incident angle to a transmission-type diffraction grating | 06-14-2012 |
20130038923 | FIBER ASSEMBLY FOR ALL-FIBER DELIVERY OF HIGH ENERGY FEMTOSECOND PULSES - Embodiments of the present invention are generally related to a fiber assembly, for example, in a chirped pulse amplification system, for all-fiber delivery of high energy femtosecond pulses. More specifically, embodiments of the present invention relate to a system and method for improving dispersion management when using hollow core photonic bandgap fibers for pulse compression. In one embodiment of the present invention, a fiber assembly comprises: an optical laser oscillator; a first fiber section for stretching the pulses from the laser oscillator, the first fiber section comprising a high order mode fiber; and a second fiber section for compressing the stretched pulses, connected to the first fiber section via a splice, the second fiber section comprising a hollow core photonic bandgap fiber; wherein the fiber assembly outputs a pulse compression at less than 200 fs. | 02-14-2013 |
20130188244 | METHOD AND DEVICE FOR AMPLIFYING AN OPTICAL SIGNAL - According to the invention, the optical signal (SE) is spatially divided into N elementary optical signals (SE. | 07-25-2013 |
20130301115 | HIGHLY RARE-EARTH-DOPED OPTICAL FIBERS FOR FIBER LASERS AND AMPLIFIERS - Various embodiments described herein comprise a laser and/or an amplifier system including a doped gain fiber having ytterbium ions in a phosphosilicate glass. Various embodiments described herein increase pump absorption to at least about 1000 dB/m-9000 dB/m. The use of these gain fibers provide for increased peak-powers and/or pulse energies. The various embodiments of the doped gain fiber having ytterbium ions in a phosphosilicate glass exhibit reduced photo-darkening levels compared to photo-darkening levels obtainable with equivalent doping levels of an ytterbium doped silica fiber. | 11-14-2013 |
20150331146 | METAMATERIAL-BASED OPTICAL DISPERSION COMPENSATION - A metamaterial-based dispersion compensator includes a plurality of layers arranged in a geometric structure; wherein the plurality of layers comprise engineered metamaterials; wherein the engineered metamaterials and the geometric structure are configured to compensate dispersion across a wavelength spectrum. The metamaterial-based dispersion compensator utilizes a specifically engineered frequency response, in a compact metamaterial form-factor, to correct for naturally occurring and problematic dispersion in physical systems such as in optical communication systems. | 11-19-2015 |
359338000 | Using phase conjugation | 2 |
20110002031 | Radial Power Amplification Device with Phase Dispersion Compensation of the Amplification Paths - A radial power combination system is provided. The system comprises a radial divider comprising ports in the form of rectangular waveguides on the periphery, a radial combiner superposed on the radial divider, comprising ports in the form of rectangular waveguides on the periphery, a first, input transition transmitting a first signal to the center of the radial divider, a second, output transition capturing the first signal amplified to the output of the radial combiner, at least two amplifying channels comprising a third, input transition capable of interacting with the guides, a fourth, output transition capable of interacting with the guides and at least one amplifier, and means for adjusting the positioning of the amplifying channels, thus making it possible to adjust the phase shift of the various channels. | 01-06-2011 |
20130342895 | HIGH PEAK POWER OPTICAL AMPLIFIER - A method and apparatus for providing a high peak power optical beam. The method includes interleaving pulse trains of different wavelengths and spatially and temporally overlapping the different wavelengths to produce an amplified output beam with very high peak power. | 12-26-2013 |
359339000 | Using saturable or spatial filter | 5 |
20090141341 | Static phase mask for high-order spectral phase control in a hybrid chirped pulse amplifier system - A chirped pulse amplification (CPA) system comprises an optical pulse stretcher and an optical pulse compressor that are mismatched in that the optical pulse compressor includes a bulk optical grating while the optical pulse stretcher does not. High order dispersion compensation is provided by an optical phase mask disposed within the optical pulse compressor. | 06-04-2009 |
20090168149 | Active Optical Fibers With Wavelength-Selective Filtering Mechanism, Method of Production and Their Use - The invention relates to optical fibers for use in optical amplification of light, such as in optical fiber amplifiers and lasers and for use in delivery of high power light, in particular to a scheme for reducing amplified spontaneous emission at undesired wavelengths. The invention further relates to articles, methods and use. An object of the invention is achieved by a micro-structured optical fiber, which is adapted to guide light by the photonic bandgap effect and to have one or more pass bands and at least one stop-band over a wavelength range from λ | 07-02-2009 |
20100157417 | Optical-signal processing apparatus - An optical-signal processing apparatus includes a polarizer that is provided at an output terminal of an optical fiber, and polarization control units that adjust a first excitation light and a second excitation light input to the optical fiber. The polarization control units adjust polarization states of the first excitation light and the second excitation light so that, when the first excitation light and the second excitation light are input to the polarizer, polarization directions of the first excitation light and the second excitation light are orthogonal to each other, and angular difference between the polarization direction of the first excitation light and the polarization direction of the second excitation light, measured against the polarization main axis of the polarizer, is equal to or smaller than a threshold value. | 06-24-2010 |
20110141554 | METHOD AND ARRANGEMENT FOR THE RAPID ADJUSTMENT OF THE TILT OF OPTICAL WDM SIGNALS - A tilt correction pump laser is injected into an optical fiber in an opposite direction of the transmission direction of a wavelength multiplex signal and an optical isolator or filter is provided to block the tilt correction signal in order to restrict the effective fiber length for the tilt correction pump signal to enable a faster adjustment of the tilt. | 06-16-2011 |
20130038924 | PULSE FIBER LASER DEVICE - A pulse fiber laser device | 02-14-2013 |