| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Optical signal processing device and method of processing optical signal | EP09178024.7 | 2009-12-04 | EP2224625A1 | 2010-09-01 | Futami, Fumio |
An optical signal processing device for shaping a waveform of an optical signal, including: an intensity inversion wavelength converter (102) 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 (103) 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 (104) configured to input coupled light output from the optical coupler (103), and suppress gain as power of the coupled light becomes higher.
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| 62 | Active temporal modulation of ultrashort pulse trains using reconfigurable optical gratings | EP07254972.8 | 2007-12-20 | EP1936434B1 | 2010-06-02 | Herz, Paul Richard |
| 63 | DISTRIBUTED AMPLIFIER OPTICAL MODULATORS | EP04781523.8 | 2004-08-16 | EP1660923A2 | 2006-05-31 | GUNN, Lawrence, C., III; KOUMANS, Roger; LI, Bing; LI, Guo, Liang; PINGUET, Thierry, J. |
| High speed optical modulators (700) can be made of k modulators (740) connected in series disposed on one of a variety of semiconductor substrates. An electrical signal propagating in a microwave transmission line (710) is tapped off of the transmission line at regular intervals and is amplified by k distributed amplifiers (720). Each of the outputs of the k distributed amplifiers is connected to a respective one of the k modulators. Distributed amplifier modulators can have much higher modulating speeds than a comparable lumped element modulator, due to the lower capacitance of each of the k modulators. Distributed amplifier modulators can have much higher modulating speeds than a comparable traveling wave modulator, due to the impedance matching provided by the distributed amplifiers. | ||||||
| 64 | INTEGRATED OPTICAL/ELECTRONIC CIRCUITS AND ASSOCIATED METHODS OF SIMULTANEOUS GENERATION THEREOF | EP02736876.0 | 2002-05-15 | EP1402564A2 | 2004-03-31 | DELIWALA, Shrenik |
| A method for forming a hybrid active electronic and optical circuit (103) using a lithography mask (6312) is disclosed. The hybrid active electronic and optical circuit (103) includes an active electronic device and at least one optical device on a Silicon-On-Insulator, SOI, wafer (102). The SOI wafer (102) includes an insulator layer (104) and an upper silicon layer (106). The upper silicon layer (106) includes at least one component of the active electronic device and at least one component of the optical device. The method includes projecting the lithography mask (6312) onto the SOI wafer (102) in order to simultaneously pattern the component of the active electronic device and the component of the optical device on the SOI wafer (102). | ||||||
| 65 | Addressable, semiconductor adaptable Bragg gratings | EP00101631.0 | 2000-01-31 | EP1030207A3 | 2002-05-22 | Wickham, Michael G.; Upton, Eric L. |
A Bragg grating device (10) is provided including a semiconductive optical waveguide (12) with a Bragg grating structure (14) formed along its length. A first plurality of electrodes (16) are disposed on a first surface (18) of the optical waveguide (12) and individually communicate with select members of the Bragg grating structure (14). A second plurality of electrodes (20) are disposed on a second surface (22) of the optical waveguide (12) and individually communicate with select members of the Bragg grating structure (14) such that individual electrodes of the second plurality of electrodes (20) are electrically coupled to individual electrodes of the first plurality of electrodes (16) via the Bragg grating structure (14). As such, a plurality of addressable portions (30) of the Bragg grating device (6) are defined. A plurality of electrical leads (32) are electrically coupled between individual electrodes of the second plurality of electrodes (20) and a power source (38) such that a refractive index of each portion (30) along the Bragg grating structure (14) may be selectively varied along the length of the optical waveguide (12). As a further feature of the present invention, a controller (36) is disposed between the plurality of electrical leads (32) and the power source (38) for varying a magnitude and distribution of current among the individual portions (30) of the Bragg grating structure (14) to effectuate different optical applications. |
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| 66 | Convertisseur optique de format NRZ-RZ | EP01401282.7 | 2001-05-17 | EP1158352A2 | 2001-11-28 | Shen, Alexandre; Devaux, Fabrice; Schlak, Michael; Tekin, Tolga |
Convertisseur d'un signal NRZ de durée de bit T comprenant une structure (10) interférométrique à deux bras (9,11) équipés d'un milieu (13,15) dont l'indice est une fonction de la puissance optique traversant ledit milieu. Le signal NRZ à convertir est introduit sur chacun des bras (9,11). Le signal en sortie (7) de la structure est réintroduit au travers d'un moyen (16) de retard de T/2 dans l'un des bras (11). Le signal présent en sortie (7) est alors le signal NRZ convertit au format RZ. |
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| 67 | Optical transmitter having optical modulator | EP92119707.5 | 1992-11-19 | EP0547394B1 | 1997-08-27 | Nishimoto, Hiroshi, c/o Fujitsu Limited; Minami, Takatoshi, c/o Fujitsu Limited; Hakogi, Hironao, c/o Fujitsu Limited |
| 68 | Optical transmitter having optical modulator | EP96105232.1 | 1992-11-19 | EP0725299A3 | 1996-10-23 | Nishimoto, Hiroshi; Minami, Takatoshi; Hakogi, Hironao |
An optical modulator includes a branched waveguide arrangement in which input light is divided and passed along respective branching waveguides (106, 108) and then recombined to form output light. Input drive signals are respectively applied to electrodes (114, 116) cooperating respectively with the waveguides. Control electrodes (124, 126) are used for controlling the coupling ratio of the directional coupling between the branching waveguides (106, 108) and a delay optical waveguide (118) coupled directionally to the branching waveguides (106, 108). With this arrangement, the driving voltage is reduced.
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| 69 | Optical transmitter having optical modulator | EP92119707.5 | 1992-11-19 | EP0547394A2 | 1993-06-23 | Nishimoto, Hiroshi, c/o Fujitsu Limited; Minami, Takatoshi, c/o Fujitsu Limited; Hakogi, Hironao, c/o Fujitsu Limited |
An optical transmitter having a Mach-Zender waveguide optical modulator (48) comprising a signal electrode (12) fed with a driving signal for effecting modulation, a bias electrode (16) for controlling operating point and a bias feedback control circuit. Because the signal electrode and the bias electrode are isolated from each other, a driving circuit (54) and the signal electrode (12) can be connected in a DC setup. This permits stable operating point control and improves waveform characteristics. Also it is disclosed an optical transmitter having a Mach-Zender waveguide optical modulator with a delay optical waveguide (118) directionally coupled to at least one of the Mach-Zender branching optical waveguides and provided with an electrode (124,126) for controlling the directional coupling ratio. |
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| 70 | Terahertz wave generating device and spectroscopic device using same | US15550146 | 2015-03-03 | US10113959B2 | 2018-10-30 | 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. | ||||||
| 71 | SCANNING DEVICE | US15615103 | 2017-06-06 | US20180052379A1 | 2018-02-22 | John T. Apostolos; William Mouyos |
| A scanning optical device suitable for use as a camera or solar concentrator. | ||||||
| 72 | Annular optical shifter and method for shifting optical signal | US15199702 | 2016-06-30 | US09709744B2 | 2017-07-18 | 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. | ||||||
| 73 | Driver for multi-stage wave guide modulator and method | US14043375 | 2013-10-01 | US08989601B2 | 2015-03-24 | Enrico Stefano Temporiti Milani; Matteo Repossi; Daniele Baldi |
| A modular hub driver architecture may include a multi-delay block configured to provide an enhanced delay match among N distinct stages of a distributed modulating electro-optical interface core. The electro-optical multi-core modulator driver may include an input impedance matching stage and a pre-conditioning circuit configured to generate a number M, an integer divisor of N, of delayed replicas of an electrical modulating signal. The electro-optical multi-core modulator may include an array of M launch buffers of the replica signals, and an array of M multi-delay blocks, each including delay circuit modules differently cascaded on distinct signal paths, and configured to receive, at respective inputs, the M replica signals and to output N/M differently delayed replicas of the input signals, each driving a correspondent output stage of one on the N electro-optical interface cores. | ||||||
| 74 | Optical tunable tapped-delay-lines using wavelength conversion and chromatic dispersion based delays | US13784524 | 2013-03-04 | US08976445B1 | 2015-03-10 | Alan E. Willner; Mohammad R. Chitgarha; Salman Khaleghi; Omer F. Yilmaz |
| Methods, systems and devices implement optical tapped delay lines. In one aspect, a device includes an optical tapped delay (TDL) including a wavelength conversion element, and a dispersive element, coupled with the wavelength conversion element, to impose a relative delay to an optical signal. The optical TDL can include a nonlinear element to combine signals in a phase coherent manner. The wavelength conversion element can include an optical nonlinear device such as a periodically poled lithium niobate (PPLN) or a highly nonlinear fiber (HNLF) with a high nonlinear coefficient and a low dispersion slope to effect four-wave mixing (FWM). The dispersive element can have a low dispersion slope, and the delays effected by the optical TDL can be tunable. | ||||||
| 75 | APPARATUS AND METHOD FOR A SYMMETRIC SEQUENTIAL ENTANGLER OF PERIODIC PHOTONS IN A SINGLE INPUT AND OUTPUT MODE | US14022272 | 2013-09-10 | US20150029569A1 | 2015-01-29 | 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. | ||||||
| 76 | System and method for synchronizing light pulses at a selected location. | US14240866 | 2012-08-28 | US20140347719A1 | 2014-11-27 | Alain Villeneuve |
| A system (100) for spatially addressing the synchronization of two light pulses (118, 120) having a respective wavelength. The system (100) includes two light sources (110, 114), each one generating one of the light pulses (118, 120) in response to receiving a respective source trigger. The light pulses (118, 120) are combined and then distributed in many light guiding elements (104) in which propagation at the first and second wavelength takes a different amount of time, the differences between the propagation times at the first and second wavelengths differing between the light guiding elements (104). The source triggers are separated from each other by a variable delay in order to cause simultaneous arrival of the first and second pulses (118, 120) at the output of only one of the light guiding elements (104). | ||||||
| 77 | DRIVER FOR MULTI-STAGE WAVE GUIDE MODULATOR AND METHOD | US14043375 | 2013-10-01 | US20140105605A1 | 2014-04-17 | Enrico Stefano TEMPORITI MILANI; Matteo Repossi; Daniele Baldi |
| A modular hub driver architecture may include a multi-delay block configured to provide an enhanced delay match among N distinct stages of a distributed modulating electro-optical interface core. The electro-optical multi-core modulator driver may include an input impedance matching stage and a pre-conditioning circuit configured to generate a number M, an integer divisor of N, of delayed replicas of an electrical modulating signal. The electro-optical multi-core modulator may include an array of M launch buffers of the replica signals, and an array of M multi-delay blocks, each including delay circuit modules differently cascaded on distinct signal paths, and configured to receive, at respective inputs, the M replica signals and to output N/M differently delayed replicas of the input signals, each driving a correspondent output stage of one on the N electro-optical interface cores. | ||||||
| 78 | Methods and devices for generation of broadband pulsed radiation | US12865013 | 2009-02-27 | US08441720B2 | 2013-05-14 | 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. | ||||||
| 79 | OPTICAL ISOLATOR USING PHASE MODULATORS | US13151786 | 2011-06-02 | US20120308175A1 | 2012-12-06 | 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. | ||||||
| 80 | OPTICAL CONTROL DEVICE | US13443385 | 2012-04-10 | US20120195565A1 | 2012-08-02 | Masatoshi Tokushima |
| Disclosed is an optical delay element that makes use of a line-defect waveguide of a photonic crystal, in which long optical delay time and small group speed dispersion are rendered compatible with each other and in which waveform distortion that might otherwise be produced in processing an ultra-high speed signal is eliminated. Two line-defect waveguides 5 and 11, having different pillar diameters and group velocity dispersions of opposite signs, are interconnected by a line-defect waveguide 8, the pillar diameters of which are gradually varied from one 5 of the line-defect waveguides to the other line-defect waveguide 11, such as to compensate for group speed dispersion as well as to maintain an optical delay effect. | ||||||
