子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | HIGH SPEED POLARIZATION MODE DISPERSION COMPENSATOR | PCT/US0125489 | 2001-08-15 | WO0214938A9 | 2003-03-27 | DEIS TIMOTHY K |
| The present invention is directed to a continuously adjustable optical delay device (20) for delaying an optical signal beam (ab) and includes a variable delay element (32), a first electro-optic deflector (26) and a second electro-optic deflector (38), a first scan lens (28) and a second scan lens (36), and a deflector driver (46) for varying first and second electrical control signals to direct a first polarization optical signal beam (a) through different portions of the variable delay element (32). The variable delay element (32) is at least one prism (34). The present invention is also directed to a polarization mode compensator for correcting the effects of polarization mode dispersion. | ||||||
| 182 | DEVICE FOR PHOTONIC GENERATION OF ARBITRARY MICROWAVE SIGNALS HAVING LINEAR FREQUENCY MODULATION | US15768820 | 2016-10-20 | US20180284495A1 | 2018-10-04 | Hugues GUILLET DE CHATELLUS; José AZANA |
| Photonic devices for generating linearly frequency modulated arbitrary microwave signals comprise a laser, and assembly for forming the emitted signal and a photoreceiver the passband of which is in the domain of the microwave frequencies. The forming assembly comprises: a first beam splitter; a first optical channel including a frequency-shifting loop comprising a beam splitter, a first optical amplifier, an optical isolator, a first spectral optical filter and an acousto-optical frequency shifter; a second optical channel including an electro-optical frequency shifter; a second beam splitter; a second optical amplifier; and a second optical filter; the acousto-optical frequency shift, the electro-optical frequency shift and the amplification gain of the first optical amplifier being adjustable. | ||||||
| 183 | Uncooled Operation of Microresonator Devices | US14217663 | 2014-03-18 | US20180217332A9 | 2018-08-02 | Paul A. Morton; Jacob Khurgin |
| This invention removes the need to provide temperature control for an optical time delay chip, which is usually provided by a thermo-electric-cooler, in order to significantly reduce the power dissipation of the device and allow ‘uncooled’ operation. Uncooled operation is achieved by monitoring the temperature of the chip, and changing the tuning of each microresonator within the device in order to continue providing the required time delay as the temperature is varied. This invention takes advantage of the fact that microresonators provide a series of resonant wavelengths over a wide wavelength range, so that the closest resonance wavelength below the operating wavelength can always be tuned up to that wavelength. When the device temperature changes, this is accounted for by both the choice of resonance wavelengths and the tuning for each of the microresonators in the device, in order to keep the correct tunable delay. | ||||||
| 184 | Terahertz Wave Generating Device and Spectroscopic Device Using Same | US15550146 | 2015-03-03 | US20180031469A1 | 2018-02-01 | Kenji AIKO; Kei SHIMURA |
| A terahertz wave generating device according to the present invention comprises a fixed-wavelength pump optical laser that generates a single wavelength pump beam, a variable-wavelength laser that emits a seed beam and is capable of making the wavelength of the seed beam variable, a delay element that delays pulses of the pump beam and a first non-linear crystal that generates terahertz waves by receiving the seed beam, a first pump beam that is not delayed by the delay element and a second pump beam that is delayed by the delay element. | ||||||
| 185 | SECOND HARMONIC GENERATION | US15716159 | 2017-09-26 | US20180017841A1 | 2018-01-18 | Martin H. MUENDEL; James J. MOREHEAD |
| A second harmonic generator may include a combiner to combine a fundamental optical beam with a residual fundamental optical beam. The second harmonic generator may include a second harmonic crystal, coupled to the combiner, to generate a second harmonic optical beam from the fundamental optical beam and the residual fundamental optical beam. Upon generation of the second harmonic optical beam, the residual fundamental optical beam may exit the second harmonic crystal. | ||||||
| 186 | ANNULAR OPTICAL SHIFTER AND METHOD FOR SHIFTING OPTICAL SIGNAL | US15199702 | 2016-06-30 | US20160313508A1 | 2016-10-27 | Liang SONG; Yingchun YANG; Yaoda LIU |
| An annular optical shifter and a method for controlling shift, where the annular optical shifter includes: a first bent straight-through waveguide, connecting an input end and an output end of an optical signal, and configured to transmit, to the output end, the optical signal input from the input end; multiple optical delay waveguide loops, arranged transversely and parallel on two arms of the first bent straight-through waveguide, where the multiple optical delay waveguide loops are configured to temporarily store optical signals; multiple pairs of optical switches, where each pair of optical switches are configured to control on and off of an optical path that is on the two arms of the first bent straight-through waveguide and two sides of an optical delay waveguide loop corresponding to each pair of optical switches; and a controller, configured to implement shift-up or shift-down of the optical signals. | ||||||
| 187 | Apparatus and method for a symmetric sequential entangler of periodic photons in a single input and output mode | US14022272 | 2013-09-10 | US09146441B2 | 2015-09-29 | Amos M. Smith; Michael L Fanto |
| An apparatus providing an integrated waveguide device that creates entanglement between a symmetrical sequence of periodically spaced (in time) photons in a single input and output mode. The invention comprises a polarization maintaining integrated waveguide chip containing a number of delay lines, integrated multimode interferometers with the potential for rapid switching, a polarization controller and off chip computer logic and timing. | ||||||
| 188 | Silicon acousto-optic modulator structure and method | US13556617 | 2012-07-24 | US09036951B2 | 2015-05-19 | Sunil Bhave; Suresh Sridaran |
| An electro-optic structure, which may comprise an acousto-optic modulator for use in an opto-acoustic oscillator, comprises a plurality of rigidly connected resonator core components located movably separated over a substrate and anchored to the substrate at an anchor point. An actuator electrode is located separated from a first one of the rigidly connected resonator core components and an optical waveguide is located separated from a second one of the rigidly connected resonator core components. Radio frequency and direct current actuation of the actuator electrode provides a mechanical vibration in the first rigidly connected resonator core component that is mechanically coupled to the second rigidly connected resonator core component which serves to optically modulate light transported through the wave guide. Reverse operation is also contemplated. Embodiments also contemplate a third rigidly connected resonator core component as a radiation pressure driven detector. Further contemplated are related fabrication and operation methods. | ||||||
| 189 | Optical time delay control device | US13135500 | 2011-07-06 | US08995038B1 | 2015-03-31 | Michael H. Anderson; Scott R. Davis; Scott D. Rommel; George Farca; Seth Trevor Johnson |
| An optical time delay control device for controllably altering the transit time of an optical beam between two points. In one example, the device may include an optically transparent solid medium for receiving the optical beam, wherein at least a portion of the medium is generally a parallel piped shape characterized by a height, length and width, wherein the length is larger than the height; two mirrors affixed to two opposing parallel surfaces of the optically transparent solid medium, so that during operation the optical beam reflects between the two mirrors as the optical beam travels through the optically transparent medium; and an angle actuator for controllably altering the angle at which the optical beam enters into the optically transparent medium, thereby controllably altering the time that the optical beam travels through the device. This in effect permits control of the amount of delay of the transmission of light, and delays of 20 nanoseconds have been achieved. | ||||||
| 190 | Optical interferometer | US13361683 | 2012-01-30 | US08983244B2 | 2015-03-17 | Jinxi Shen; Hiroaki Yamada; David J. Chapman; Shanrui Ren |
| An optical interferometer for demodulating a differential phase shift keying optical signal includes a planar lightwave circuit and at least one free space delay line optically coupled to the planar lightwave circuit. The planar lightwave circuit has a waveguide splitter, a waveguide coupler, and a phase adjuster. In operation, the splitter splits the optical signal into equal portions, the phase adjuster adjusts the relative phase of the optical signal portions, and the free space delay line provides one-bit delay between the portions of the optical signal. The delayed signals are mixed in the waveguide coupler. The free space delay line can be made variable for adjustment of the bit delay for operation at different bit rates, and/or for optimization of the interferometer performance. | ||||||
| 191 | Optical isolator using phase modulators | US13151786 | 2011-06-02 | US08768110B2 | 2014-07-01 | Christopher R. Doerr |
| Various exemplary embodiments relate to an optical isolator in an integrated optical circuit including: a first optical modulator configured to provide a first periodic phase modulation on an input optical signal; a second optical modulator configured to provide a second periodic phase modulation on the modulated optical signal; and an optical waveguide having a length L connecting the first optical modulator to the second optical modulator; wherein the phase difference between the first and second periodic phase modulation is π/2, and wherein the length L of the optical waveguide causes a phase delay of π/2 on an optical signal traversing the optical waveguide. | ||||||
| 192 | Optical apparatus | US12790000 | 2010-05-28 | US08462424B2 | 2013-06-11 | Tobias Paul Lamour; Derryck Telford Reid; Lukasz Kornaszewski |
| An optical parametric oscillator (OPO) comprises a resonant cavity for signal light, and an optically non-linear medium disposed in the resonant cavity for converting pump light into the signal light, wherein the resonant cavity is arranged so that in operation signal light is repeatedly output from and returned to the optically non-linear medium along a signal light path in a continuously repeating cycle, and the OPO comprises delay means for extending the time taken for signal light output from the optically non-linear medium in operation to return to the optically non-linear medium along the signal light path. | ||||||
| 193 | Tunable optical group delay | US12897219 | 2010-10-04 | US08406586B2 | 2013-03-26 | Paul A. Morton; Jacob Khurgin |
| This invention provides a balanced thermal approach to the tuning of an optical time delay device in order to eliminate any long-term time response of the device performance due to thermal time constants of the device, its mount, packaging or electronic temperature control circuits. The invention provides multiple ways to improve the thermal tuning speed of the balanced thermal approach. Additionally, the invention overcomes an issue of microresonator non-uniformity by operating a large group of microresonators as a ‘super-ring’ by tuning the large group together to provide a controllable group delay with large bandwidth. | ||||||
| 194 | OPTICAL INTERFEROMETER | US13361683 | 2012-01-30 | US20120195544A1 | 2012-08-02 | Jinxi Shen; Hiroaki Yamada; David J. Chapman; Shanrui Ren |
| An optical interferometer for demodulating a differential phase shift keying optical signal includes a planar lightwave circuit and at least one free space delay line optically coupled to the planar lightwave circuit. The planar lightwave circuit has a waveguide splitter, a waveguide coupler, and a phase adjuster. In operation, the splitter splits the optical signal into equal portions, the phase adjuster adjusts the relative phase of the optical signal portions, and the free space delay line provides one-bit delay between the portions of the optical signal. The delayed signals are mixed in the waveguide coupler. The free space delay line can be made variable for adjustment of the bit delay for operation at different bit rates, and/or for optimization of the interferometer performance. | ||||||
| 195 | True time delay photonic circuit | US12466338 | 2009-05-14 | US08200047B1 | 2012-06-12 | Anthony C. Kowalczyk |
| Described are systems and methods that provide tunable true time delay of a signal using a compact photonic circuit. The photonic circuit comprises a plurality of waveguides, in which each waveguide corresponds to a different time delay. A particular one of the waveguides corresponding to a desired time delay is selected by tuning the wavelength of a tunable laser. Additional photonic circuits can be used to provide additional selectable time delays. | ||||||
| 196 | EFFICIENT PULSE LASER LIGHT GENERATION AND DEVICES USING THE SAME | US12633658 | 2009-12-08 | US20110134944A1 | 2011-06-09 | Yushi Kaneda; Jun Sakuma |
| A time delay is introduced in the optical path of the light pulse at fundamental wavelength relative to that for the fourth harmonic light pulse in a set up for generating the 5th harmonic, to compensate for at least a portion of the time delay of the fourth harmonic relative to the fundamental wavelength caused by 4HG generation. In one embodiment, this is achieved by introducing a time delay of the fundamental relative to the second harmonic wavelength, such as preferably by means of a timing compensator in the optical paths of the second harmonic and the fundamental wavelength. Preferably, any further delay of the fourth harmonic relative to the fundamental wavelength caused by other optical components can also be compensated for in this manner. | ||||||
| 197 | Distributed amplifier optical modulator | US12352415 | 2009-01-12 | US07899276B2 | 2011-03-01 | Daniel Kucharski; Behnam Analui; Lawrence C. Gunn, III; Roger Koumans; Thierry Pinguet; Thiruvikraman Sadagopan |
| Various embodiments described herein comprises an optoelectronic device comprising a waveguide structure including a plurality of optical modulator elements each having an optical property that is adjustable upon application of an electrical signal so as to modulate light guided in the waveguide structure. The optoelectronic device also comprises a plurality of amplifiers in distributed fashion. Each amplifier is electrically coupled to one of the optical modulators to apply electrical signals to the optical modulator. | ||||||
| 198 | METHODS AND DEVICES FOR GENERATION OF BROADBAND PULSED RADIATION | US12865013 | 2009-02-27 | US20100321767A1 | 2010-12-23 | Eric Borguet; Oleksandr Isaienko |
| Methods and apparatus for non-collinear optical parametric ampliffication (NOPA) are provided. Broadband phase matching is achieved with a non-collinear geometry and a divergent signal seed to provide bandwidth gain. A chirp may be introduced into the pump pulse such that the white light seed is amplified in a broad spectral region. | ||||||
| 199 | Tunable optical group delay based on microresonator structures | US12205368 | 2008-09-05 | US07831119B2 | 2010-11-09 | Jacob Khurgin; Paul A. Morton |
| This invention provides a tunable delay of an optical signal having multiple frequency components. The delay comprises at least a first and a second integrated resonators coupled sequentially to a waveguide; the resonators have angular resonant frequencies ω1=ω0−Δω and ω2=ω0+Δω respectively, ω0 is a median frequency of an input optical signal and Δω is a tunable deviation from the median frequency. The device is providing a nearly equal true time delay to all frequency components in the output signal. | ||||||
| 200 | OPTICAL SIGNAL PROCESSING DEVICE AND METHOD OF PROCESSING OPTICAL SIGNAL | US12639964 | 2009-12-16 | US20100220997A1 | 2010-09-02 | Fumio FUTAMI |
| An optical signal processing device for shaping a waveform of an optical signal, including: an intensity inversion wavelength converter configured to generate an intensity-modulated optical signal of a second wavelength obtained by inverting a signal intensity of an input intensity-modulated optical signal of a first wavelength; an optical coupler configured to multiplex the intensity-modulated optical signal of the first wavelength and the intensity-modulated optical signal of the second wavelength at a timing at which signal intensities of those signals become opposite; and an optical limiter configured to input coupled light output from the optical coupler, and suppress gain as power of the coupled light becomes higher. | ||||||
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