| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | All-optical mach-zehnder wavelength converter with monolithically integrated laser | US08997204 | 1997-12-23 | US06208454B1 | 2001-03-27 | Uziel Koren; Leonard Henri Spiekman; Jay M. Wiesenfeld |
| A wavelength converter incorporating an on-chip integrated laser for use in an optical system. The converter includes a first port for receiving an optical input signal such as a WDM signal and providing it to an interferometer, and an output port for outputting a signal which is a wavelength-converted version of the input signal. An optical source or laser is fabricated on the chip substrate on which the interferometer is formed for providing operating power to the interferometer. Power levels of the input signal are maintained by adjusting an on-chip semiconductor optical amplifier that receives the optical input signal and provides the amplified signal to the interferometer. In an alternative embodiment, the on-chip optical source is replaced by an on-chip pre-amplifier for an external laser source. | ||||||
| 82 | All-optical wavelength converter using a semiconductor optical amplifier and a polarization interferometer | US145545 | 1998-09-02 | US6101027A | 2000-08-08 | Hak Kyu Lee; Kyong Hon Kim; Joon Tae Ahn; Min Yong Jeon; Dong Sung Lim; Ho Young Kim |
| The present invention discloses an all-optical wavelength converter using a semiconductor optical amplifier and a polarization interferometer. The all-optical wavelength converter using a semiconductor optical amplifier and a polarization interferometer including a wavelength converter which modulates a probe light into a inverting waveform to a signal light and outputs the modulated light by using cross gain modulation, a phenomenon that occurs while the signal light and the probe light pass together through an optical splitter/combiner, a semiconductor optical amplifier and a filter at the same time, a polarization interferometer which makes the probe light outputted from the wavelength converter and having the inverting waveform to the signal light undergo a double-refraction so that a predetermined time split occurs on it and provides a non-inverting wavelength conversion and suppresses the slow XGM components in the converted outputs due to the slow carrier recombination time. | ||||||
| 83 | Modulation instability wavelength converter | US8179 | 1998-01-16 | US6043927A | 2000-03-28 | Mohammed N. Islam |
| Disclosed is an all waveguide fiber wavelength converter which makes use of modulational instability to convert signal wavelength over a conversion bandwidth while maintaining low pump laser power relative to other wavelength conversion devices such as those which make use of four wave mixing. The device is operated in the anomalous dispersion region of the waveguides and the zero dispersion of the waveguide in which conversion occurs is less than the pump wavelength so that conversion may occur for signal wavelengths above and below the zero dispersion wavelength. Conversion efficiency is in the range of 25 dB to 30 dB. | ||||||
| 84 | Optical logic devices and methods | US858321 | 1997-05-19 | US5999283A | 1999-12-07 | Kim Byron Roberts; James Edward Andrew Whiteaway; Mark Tait |
| An optical logic device is provided by an interferometer having an output which defines a logic state 1 or 0 in dependence upon an interference condition existing in the interferometer. Each arm of the interferometer contains a semiconductor optical amplifier in which the effect of cross phase modulation is utilized to modulate the phase of light transmitted through the respective arms. Optical signals are counter propagated through one or both of the arms in order to provide the cross modulation and thereby enable the interference condition to be set to one or other of the logic states. Automatic level control is provided at inputs to the interferometer and between successive stages of logic device. The method has application to high frequency digital optical communication systems where all optical logic operations are required. | ||||||
| 85 | Wavelength converter, optically operational device and optical pulse phase detecting circuit | US923349 | 1997-09-04 | US5959764A | 1999-09-28 | Noboru Edagawa; Masatoshi Suzuki; Shu Yamamoto |
| A waveform converter includes a transmission-type InGaAsP electroabsorption optical modulator 10 using the Franz-Keldysh effect. Continuous light (probe light) 12 as a target of wavelength conversion is fed to an end surface 10a of the optical modulator 10 while a constant voltage of 3 V is applied to the optical modulator 10. An optical circulator 14 is supplied with original signal light (signal light to be waveform-converted) 16 through its terminal A, and delivers it from the terminal B thereof to another end surface 10b of the optical modulator 10. The optical modulator 10 gives a loss to the probe light 12 according to the intensity of the original signal light 16 and makes the waveform of the probe light 12 to be substantially the same as the original signal light. The probe light waveform-converted by the optical modulator 10 and output from the end surface 10b is fed to a terminal B of an optical circulator 14 as a waveform-converted light 18 and output from its terminal C. | ||||||
| 86 | Optical clock signal extraction using non-linear optical modulator | US899124 | 1997-07-23 | US5828679A | 1998-10-27 | Michael Andreja Fisher |
| A non-linear semiconductor optical device includes an active waveguide with a multiple quantum well construction in the active region. The device is supplied with a drive current at the material transparency current with respect to an optical pump. An optical non-linearity appears with respect to input radiation having a wavelength below that of the bandgap equivalent wavelength of the active region (.lambda.<.lambda.g), the effect being achieved at relatively low optical input powers. The non-linearity is fast enough that a switching device incorporating the invention, in use as a demultiplexer, has potential to be used at bit rates approaching the Tbit/s range. In a demultiplexer embodiment, the non-linearity may be exploited in a directional coupler, an optical pump being used intermittently to control cross-over of an incoming TDM data signal so as to "pick off" a selected channel. Other applications include optical logic devices. | ||||||
| 87 | Apparatus for shaping binary optical signals, and use thereof to modify said signals | US874580 | 1997-06-13 | US5781326A | 1998-07-14 | Dominique Chiaroni; Michel Sotom; Dominique De Bouard |
| To shape binary optical signals, the apparatus comprises a first stage for providing a modulating signal whose high levels are stabilized so as to depend little on fluctuations in the input signal. The signal is applied to a second stage including an interferometer structure designed to deliver an output signal that is the result of interference between first and second auxiliary waves, the interference being respectively constructive and destructive when the power of the modulating signal corresponds respectively to a first logic state and to a second logic state. The apparatus can be used to modify the input signal by deleting or inserting data. It can be used in optical data switching or transmission. | ||||||
| 88 | Semiconductor optical waveguide device, optical control type optical switch, and wavelength conversion device | US526384 | 1995-09-11 | US5754714A | 1998-05-19 | Nobuo Suzuki; Yuzo Hirayama |
| A semiconductor optical waveguide device comprises a stripe-shaped semiconductor optical waveguide, part of the semiconductor optical waveguide being an active layer producing gain by electric current injection, and part of the semiconductor optical waveguide being an intra-band resonant absorption layer in which an intra-band absorption resonant wavelength is arranged within the gain band of the active layer, and means for injecting electric current into the active layer. | ||||||
| 89 | Terahertz repetition rate optical computing systems, and communication systems and logic elements using cross-phase modulation based optical processors | US259877 | 1994-06-15 | US5463485A | 1995-10-31 | Robert R. Alfano; Ping-Pei Ho; Patrice Baldeck |
| Optical communication systems, optical computing systems and optical logic elements which rely on the phenomina of cross-phase modulation to alter and control, either or simultaneously, the spectral, temporal or/and spatial properties of ultrashort light pulses for processing information with high speed repetition rates. A weak beam of ultrashort light pulses is modulated by an intense beam of ultrashort light pulses by copropagating both beams through a non-linear medium such that cross-phase modulation effects are realized. | ||||||
| 90 | Terahertz repetition rate optical computing systems, and communication systems and logic elements using cross-phase modulation based optical processors | US806170 | 1991-12-12 | US5373381A | 1994-12-13 | Robert R. Alfano; Ping-Pei Ho; Patrice Baldeck |
| Optical communication systems, optical computing systems and optical logic elements which rely on the phenomina of cross-phase modulation to alter and control, either or simultaneously, the spectral, temporal or/and spatial properties of ultrashort light pulses for processing information with high speed repetition rates. A weak beam of ultrashort light pulses is modulated by an intense beam of ultrashort light pulses by copropagating both beams through a non-linear medium such that cross-phase modulation effects are realized. | ||||||
| 91 | Wavelength conversion using self electrooptic effect devices | US140079 | 1987-12-31 | US4822992A | 1989-04-18 | Israel Bar-Joseph; Daniel S. Chemla; David A. B. Miller |
| Information borne by an optical signal at a first wavelength is transferred intact to another optical signal at a second wavelength and vice versa via an optoelectronic circuit employing quantum well devices connected serially to facilitate self electrooptic effects therein. The optoelectronic circuit accepts two input signals and provides two output signals wherein an input signal and its corresponding output signal are at the same wavelength. Bidirectional information transfer with bidirectional wavelength conversion is permitted by the optoelectronic circuit. | ||||||
| 92 | Fast optical switch and its applications in optical communication | US16501189 | 2019-03-05 | US20190253776A1 | 2019-08-15 | Mohammad A. Mazed; Rex Wiig; Angel Martinez |
| A fast optical (with or without a photonic crystal) switch is fabricated/constructed, utilizing a phase transition material/Mott insulator, activated by either an electrical pulse (a voltage pulse or a current pulse) and/or a light pulse and/or pulses in terahertz (THz) frequency of a suitable field strength and/or hot electrons. The applications of such a fast optical switch for an on-demand optical add-drop subsystem, integrating with (a) a light slowing/light stopping component (based on metamaterials and/or nanoplasmonic structures) and (b) with or without a wavelength converter are also described. | ||||||
| 93 | OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND METHOD OF CONTROLLING EXCITATION LIGHT FREQUENCY | US16181752 | 2018-11-06 | US20190146306A1 | 2019-05-16 | Shota Mori |
| An optical transmission apparatus includes a wavelength converter that wavelength-converts input signal light using a nonlinear optical medium to output the converted signal light, a memory that holds first information relating to a wavelength conversion characteristic of the wavelength converter, a communication interface that receives second information relating to a second wavelength conversion characteristic of an adjacent optical transmission apparatus, and a control circuit that determines, using the first information and the second information when the second information is received, an excitation light frequency at which a gain deviation of main signal light subjected to a wavelength conversion is minimized to set the determined excitation light frequency in the wavelength converter. | ||||||
| 94 | WAVELENGTH CONVERSION DEVICE, CONTROL-LIGHT GENERATION DEVICE, WAVELENGTH CONVERSION METHOD, AND CONTROL-LIGHT GENERATION METHOD | US15950806 | 2018-04-11 | US20180307119A1 | 2018-10-25 | Tomoyuki Kato; Shigeki Watanabe; Takeshi Hoshida |
| A wavelength conversion device that converts input signal light having a first frequency into output signal light having a second frequency, includes: a control-light generator that outputs first continuous oscillation light and second continuous oscillation light; and a nonlinear optical medium that cross-phase modulates the input signal light with the first continuous oscillation light and the second continuous oscillation light and generates the output signal light, wherein the control-light generator outputs the first continuous oscillation light and the second continuous oscillation light to have polarized waves in directions orthogonal to each other and have a frequency interval equal to a difference between the first frequency and the second frequency and controls, based on intensity of the output signal light, timings of modulation of phases of the first continuous oscillation light and the second continuous oscillation light to be aligned with each other. | ||||||
| 95 | Luminous systems | US13963032 | 2013-08-09 | US09797573B2 | 2017-10-24 | M. Glenn Horner; Edward D. Kingsley; Satish Agrawal; Louis Cincotta |
| A luminous system comprising one or more illumination sources, a multilayer structure, and one or more diffuse reflection layers being optically decoupled from the multilayer structure, wherein the emission and the reflection of the luminous system produce a first observed visible color when the one or more illumination sources are powered and a second observed visible color when the one or more illumination sources are non-powered is disclosed. Also disclosed are methods of creating the inventive luminous system. | ||||||
| 96 | On-chip photonic-phononic emitter-receiver apparatus | US15060388 | 2016-03-03 | US09696492B1 | 2017-07-04 | Jonathan Albert Cox; Robert L. Jarecki, Jr.; Peter Thomas Rakich; Zheng Wang; Heedeuk Shin; Aleem Siddiqui; Andrew Lea Starbuck |
| A radio-frequency photonic devices employs photon-phonon coupling for information transfer. The device includes a membrane in which a two-dimensionally periodic phononic crystal (PnC) structure is patterned. The device also includes at least a first optical waveguide embedded in the membrane. At least a first line-defect region interrupts the PnC structure. The first optical waveguide is embedded within the line-defect region. | ||||||
| 97 | DEVICE AND METHOD FOR ALL-OPTICAL INFORMATION EXCHANGE | US15068158 | 2016-03-11 | US20160195792A1 | 2016-07-07 | Jian WANG; Jifang HE; Hongyan FU |
| An all-optical information exchange device and method are provided. The all-optical information exchange device includes: a second-order nonlinear optical waveguide, a first optical coupler, a third optical coupler, a fourth optical coupler, a first optical filter, a second optical filter and a first polarization controller; the first optical filter is transmissive to a first wavelength/waveband signal light, and the second optical filter is transmissive to a second wavelength/waveband signal light during use. | ||||||
| 98 | Parallel and WDM silicon photonics integration in information and communications technology systems | US14106359 | 2013-12-13 | US09261754B2 | 2016-02-16 | Qing Xu; Robert Brunner; Stephane Lessard |
| A wavelength converter includes first silicon waveguides and second silicon waveguides intersecting the first silicon waveguides to form an arrayed waveguide. The arrayed waveguide receives optical data signals at the same wavelength at a first input and optical pump signals at different wavelengths at a second input. Microring resonators evanescently couple different ones of the first silicon waveguides to different ones of the second silicon waveguides. Each microring resonator is tuned to the wavelength of the optical data signals or one of the wavelengths of the optical pump signals, so that different combinations of the optical data signals and the optical pump signals are provided at an output of the arrayed waveguide. A non-linear optical media converts the wavelength of each combined optical signal at the output of the arrayed waveguide to yield wavelength converted signals each having a new dedicated wavelength. | ||||||
| 99 | Method and device for converting an input light signal into an output light signal | US13894334 | 2013-05-14 | US09078052B2 | 2015-07-07 | Nigel J. Copner; Yongkang Gong; Wei Loh |
| A method and device for converting an input light signal into an output light signal, in an optical component is described. An input light signal, at a first wavelength, and a first light beam which may be at a second wavelength, are received at the component. The input light signal and the first light beam interfere in the component to form an interference pattern, which modifies a reflectivity spectrum of the component to increase the reflectivity of the component in a portion of the reflectivity spectrum. A second light beam, having a second wavelength corresponding with a wavelength within the portion of the reflectivity spectrum, is also received at the component and is then reflected from the component, in dependence upon the portion of the reflectivity spectrum, to generate the output light signal at the second wavelength. This enables conversion of light signals to signals at a different wavelength. | ||||||
| 100 | Polarization independent wavelength converter and polarization independent wavelength conversion method | US13619024 | 2012-09-14 | US08873898B2 | 2014-10-28 | Shigehiro Takasaka |
| A polarization independent wavelength converter includes a polarization maintaining optical fiber which includes a first and a second ends and has a first polarization axis and a second polarization axis, the first and the second polarization axes being orthogonal to each other and propagating light at different velocities, and a group velocity difference cancellation unit that receives a signal light having a certain polarization state and a pump light including a polarization component parallel to the first polarization axis and a polarization component parallel to the second polarization axis and that causes the signal light and a wavelength-converted light generated in the polarization maintaining optical fiber by the signal and the pump lights to pass through the polarization maintaining optical fiber in a manner not to be influenced by a group velocity difference of each of the signal and the wavelength-converted lights between the first and the second polarization axes. | ||||||
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