Patent application number | Description | Published |
20130166239 | METHOD FOR GENERATING INFORMATION SIGNAL - A signal generation method for generating an information signal F(b) by performing a Fourier transform on a signal f(a) includes the following steps: detecting the maximum peak intensity of the information signal F(b); calculating an amplitude, a phase, and a frequency of the signal f(a) corresponding to the maximum peak intensity; generating a signal by causing the signal f(a) corresponding to the maximum peak intensity to extend along an ‘a’ axis on the basis of information about the amplitude, the phase, and the frequency of the signal f(a); generating an extrapolation signal by extracting a signal in a region smaller than a1 and a signal in a region larger than a2 from the signal, where a106-27-2013 | |
20140029013 | OPTICAL COHERENCE TOMOGRAPHIC IMAGING APPARATUS - An optical coherence tomographic imaging apparatus includes a wavelength-sweeping light source. The wavelength-sweeping light source includes an optical resonator in which a light amplifying medium and a dispersive element configured to give angular dispersion to light emitted from the light amplifying medium according to the wavelength are provided, and a wavelength selection element having a rotating mechanism. An arithmetic processing unit converts a selected wavelength obtained in correspondence with a rotation angle of the rotating mechanism into an optical frequency, and obtains a data string of interfering signals at equal optical frequency intervals by interpolation on the basis of data on interfering signals sampled in correspondence with the rotation angle. | 01-30-2014 |
20140125992 | OPTICAL COHERENCE TOMOGRAPHY APPARATUS AND OPTICAL COHERENCE TOMOGRAPHY METHOD - The optical coherence tomography apparatus includes: a light source unit; a branch unit for branching light output from the light source unit into measurement light and reference light; an interference unit for causing reflection, the reflection being light returned from an object, which is illuminated with the measurement light, to interfere with the reference light; and a detection unit for receiving interference light from the interference unit so as to detect an intensity of the interference light. The optical coherence tomography apparatus acquires a tomographic image of the object based on the intensity of the interference light detected by the detection unit. The interference unit outputs first and second interference light having interference components having phases mutually different by π. The first and second interference light output from the interference unit reaches the detection unit so that a time gap is generated between the first and second interference light. | 05-08-2014 |
20140269792 | FIBER LASER SYSTEM - A laser system includes a seed laser configured to generate a plurality of optical pulses; a controller configured to receive the plurality of the optical pulses and obtain chirped pulses, each chirped pulse having a chirping amount different from each other; an optical waveguide, having a characteristic of anomalous dispersion, configured to cause soliton self-frequency shifts while the chirped pulses propagating so that each center wavelength of a pulse which output from the optical waveguide is different from each other. | 09-18-2014 |
20150015938 | Dissipative Soliton Mode Fiber Based Optical Parametric Oscillator - A fiber optic parametric amplifier that includes a resonating cavity. The resonating cavity includes linear fiber optic gain medium, with negative chromatic dispersion; and a nonlinear fiber optic gain medium with positive chromatic dispersion. | 01-15-2015 |
20150309386 | SYSTEM FOR CONTROLLING THE CHIRP OF AN OPTICAL SIGNAL - An apparatus for altering a chirp of an input light comprising one or more grating structures and one or more electro-optical blocks. In which a voltage is applied to the one or more electro-optical blocks to alter a chirp of light exiting the apparatus. | 10-29-2015 |
20150355023 | System and Method of Alignment for Balanced Detection in a Spectral Domain Optical Coherence Tomography - An alignment process for a balance detecting spectral domain optical coherence tomography system. The alignment process includes comparing a spectral performance curve of a first detector array to a spectral performance curve of a second detector array to determine if the system is aligned. | 12-10-2015 |
20150373431 | Split Spectrum Spectral Domain Optical Coherence Tomography - A spectral domain optical coherence tomography apparatus for measuring a sample. The spectral domain optical coherence tomography includes a broadband light source, that supplies broadband light to the sample and a reference. The spectral domain optical coherence tomography apparatus includes a wavelength selective switch that receives mixed light that is a combination of the broadband light that is reflected off the sample and the reference. The spectral domain optical coherence tomography apparatus includes a sensor that includes a plurality of pixels. The wavelength selective switch guides a first portion of the mixed light that is within a first wavelength and a second wavelength to the sensor during a first period of time. The wavelength selective switch guides a second portion of the mixed light that is within a third wavelength and a fourth wavelength to the sensor during a second period of time. | 12-24-2015 |