公开(公告)号：US20060002715A1

公开(公告)日：2006-01-05

申请号：US11134275

申请日：2005-05-23

Applicant: Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

Inventor： Koji Igarashi ,  Yoshihiro Emori ,  Atsushi Oguri ,  Shu Namiki ,  Osamu Aso ,  Masateru Tadakuma

IPC: H04B10/00

CPC classification number: G02F1/365 ,  G02F1/3513 ,  G02F2203/17 ,  G02F2203/26 ,  H01S5/0623 ,  H04B10/25077 ,  H04B10/291

Abstract: The present invention provides a pulse train generator comprising: a dual-frequency signal light source for generating a dual-frequency signal; a soliton shaper for soliton-shaping output light from the dual-frequency signal light source; and an adiabatic soliton compressor for performing adiabatic soliton compression on output light from the soliton shaper, and also provides a waveform shaper used in this pulse train generator, including a plurality of highly nonlinear optical transmission lines and a plurality of low-nonlinearity optical transmission lines which has a nonlinearity coefficient lower than that of the plurality of highly nonlinear optical transmission lines and which has a second-order dispersion value of which an absolute value is different from that of the plurality of highly nonlinear optical transmission lines. Further, the present invention provides a light source comprising a plurality of continuous light sources of which at least one oscillates in a multimode; a multiplexer for multiplexing output light from the continuous light sources; and a nonlinear phenomenon producer for producing a nonlinear phenomenon on output light from the multiplexer so as to suppress SBS (Stimulated Brillouin Scattering).

Abstract translation: 本发明提供一种脉冲串发生器，包括：用于产生双频信号的双频信号光源; 用于孤子整形的孤子整形器来自双频信号光源的输出光; 以及用于对来自孤子整形器的输出光进行绝热孤子压缩的绝热孤子压缩器，并且还提供在该脉冲串发生器中使用的波形整形器，包括多个高度非线性的光传输线和多个低非线性光传输线 其具有比多个高度非线性光传输线的非线性系数低的非线性系数，并且具有绝对值与多个高度非线性光传输线的绝对值不同的二阶色散值。 此外，本发明提供了一种光源，其包括至少一个以多模振荡的多个连续光源; 多路复用器，用于复用来自连续光源的输出光; 以及用于在来自多路复用器的输出光上产生非线性现象以抑制SBS（受激布里渊散射）的非线性现象产生器。

公开(公告)号：US20050129361A1

公开(公告)日：2005-06-16

申请号：US10883955

申请日：2004-07-01

Applicant: Dong Kim ,  Dae Yee ,  Young Leem ,  Kyung Park

Inventor： Dong Kim ,  Dae Yee ,  Young Leem ,  Kyung Park

IPC: G02B6/28 ,  G02B6/02 ,  G02B6/26 ,  H01S5/06 ,  H01S5/062 ,  H01S5/10 ,  H01S5/14

CPC classification number: H01S5/146 ,  G02B6/02195 ,  G02B6/2804 ,  G02B6/2813 ,  H01S5/0612 ,  H01S5/0623 ,  H01S5/1003 ,  H01S5/1096 ,  H01S5/141

Abstract: A light source has a structure in which a 3-dB beam splitter is integrated with a Febry-Perot laser diode having a cleaved plane. A first waveguide grating and a first refractive index modifier changing a Bragg wavelength of the first waveguide grating are provided at one branch of the 3-dB beam splitter. A second waveguide grating and a second refractive index modifier changing a Bragg wavelength of the second waveguide grating are provided at another branch of the 3-dB beam splitter.

Abstract translation: 光源具有其中3分贝分束器与具有劈开平面的Febry-Perot激光二极管集成的结构。 改变第一波导光栅的布拉格波长的第一波导光栅和第一折射率修正器设置在3-dB分束器的一个分支处。 改变第二波导光栅的布拉格波长的第二波导光栅和第二折射率修正器设置在3-dB分束器的另一分支处。

公开(公告)号：US06654401B2

公开(公告)日：2003-11-25

申请号：US09811320

申请日：2001-03-17

Applicant: Amarildo Jesus Cavalheiro Vieira ,  Peter Robert Herczfeld ,  Vincent Michael Contarino ,  Yifei Li ,  Linda Jeanne Mullen

Inventor： Amarildo Jesus Cavalheiro Vieira ,  Peter Robert Herczfeld ,  Vincent Michael Contarino ,  Yifei Li ,  Linda Jeanne Mullen

IPC: H01S3091

CPC classification number: H01S3/107 ,  H01Q3/2676 ,  H01S3/2383 ,  H01S5/0623

Abstract: A chirp signal source includes first and second lasers formed on a solid-state chip or substrate. Each of the lasers has a resonator or cavity which incorporates or includes electrooptic material which changes refractive index in response to an electric field. The lasers are pumped, and the resulting laser beams are coupled to a light-to-electric converter which combines the light beams to generate an electrical difference frequency. The change in refractive index allows the lasers to be swept or chin,ed at a much higher rate than thermal or piezoelectrically operated lasers. This structure has the advantages of tending to reduce temperature effects on the difference frequency. It has the further advantage of a high sweep rate, which can be used to improve the signal-to-noise ratio. A radar or lidar ranging system according to an aspect of the invention uses multiple solid-state lasers, which are thermally coupled together.

Abstract translation: 啁啾信号源包括形成在固态芯片或基板上的第一和第二激光器。 每个激光器具有谐振器或空腔，其包含或包括响应于电场而改变折射率的电光材料。 激光器被泵浦，并且所产生的激光束耦合到组合光束以产生电差频率的光电转换器。 折射率的变化允许激光以比热或压电操作的激光器高得多的速率扫描或下巴。 这种结构具有降低温差对差频的作用。 它具有高扫描速率的进一步优点，可用于提高信噪比。 根据本发明的一个方面的雷达或激光雷达测距系统使用热耦合在一起的多个固态激光器。

公开(公告)号：US20030147434A1

公开(公告)日：2003-08-07

申请号：US09213088

申请日：1998-12-15

Inventor： JIN HONG ,  RONGQING HUI ,  MAURICE S. O'SULLIVAN

IPC: H01S003/10 ,  H01S005/00 ,  H01S003/08

CPC classification number: H01S5/1228 ,  H01S5/0057 ,  H01S5/0265 ,  H01S5/0623 ,  H01S5/06258 ,  H01S5/1021 ,  H01S5/1215

Abstract: A compact source capable of generating continuously tunable high frequency microwave radiation and short optical pulses in the picosecond/sub-picosecond range is invented. It includes a laser structure having two lasers formed on the same substrate which simultaneously operate at different longitudinal modes. Each laser has a complex coupled (gain-coupled or loss-coupled) grating which is formed by deep etching through a multi-quantum well structure, either of the active medium or of the additional lossy quantum-well layers, thus ensuring no substantial interaction between lasers. The lasers have a common active medium and shared optical path and provide mutual light injection into each other which results in generation of a beat signal at a difference frequency of two lasers. The beat frequency is defined by spacing between the laser modes and may be continuously tuned by current injection and/or temperature variation. Thus, the beat signal provides a continuously tunable microwave radiation. To form a train of short optical pulses, the beat signal is either further sent to a saturable absorber followed by a semiconductor optical amplifier, or sent directly into an optical compressor which includes a dispersion fiber. As a result, a duration of each impulse is compressed, and a train of short optical pulses is formed.

Abstract translation: 发明了能够产生连续可调谐的高频微波辐射和皮秒/次皮秒范围内的短光脉冲的紧凑型光源。 它包括具有形成在同一衬底上的两个激光器的激光器结构，其同时在不同的纵向模式下工作。 每个激光器具有复合耦合（增益耦合或损耗耦合）光栅，其通过深入蚀刻通过多量子阱结构，活性介质或附加的有损的量子阱层中的任一个形成，从而确保没有实质的相互作用 激光之间。 激光器具有共同的有源介质和共享光路，并且彼此相互注入，这导致以两个激光器的差频产生拍频信号。 节拍频率由激光模式之间的间距定义，并且可以通过电流注入和/或温度变化来连续调谐。 因此，拍频信号提供连续可调的微波辐射。 为了形成短脉冲序列，将拍频信号进一步发送到可饱和吸收体，随后是半导体光放大器，或者直接发送到包括分散光纤的光学压缩器中。 结果，每个脉冲的持续时间被压缩，并形成一串短的光脉冲。

公开(公告)号：US06438148B1

公开(公告)日：2002-08-20

申请号：US09405119

申请日：1999-09-27

Applicant: Rongqing R. Hui ,  Jin J. Hong ,  Maurice S. O'Sullivan

Inventor： Rongqing R. Hui ,  Jin J. Hong ,  Maurice S. O'Sullivan

IPC: H01S310

CPC classification number: H01S5/1228 ,  H01S5/0057 ,  H01S5/0265 ,  H01S5/0623 ,  H01S5/06258 ,  H01S5/1021 ,  H01S5/1215

Abstract: A device for encoding data into high speed optical train includes N data encoding branches, each having a dual-mode laser, generating at the beat frequency f, and an external modulator. Each dual mode laser includes a laser structure having two sections formed on the same substrate which simultaneously operate at different longitudinal modes. Each section has a complex coupled (gain-coupled or loss-coupled) grating which is formed by deep etching through the multi-quantum well structure, ensuring no substantial interaction between lasers. The sections have common active medium and shared optical path and provide mutual light injection into each other. Signals from the branches are put through a variable delay line, introducing phase shifts between the signals, and compressed in the optical compressor. Thus, N short pulse optical trains are formed. The phase shifts between the signals are adjusted so that, when the trains are further combined in the optical combiner, they interleave in a precise timing to form one combined optical pulse train of frequency Nf. Thus, encoding of data at a speed, which is much higher than the speed of the external modulator, is achieved. The corresponding method of encoding data is also provided.

Abstract translation: 用于将数据编码成高速光学列车的装置包括N个数据编码分支，每个分支具有以拍频f产生的双模激光器和外部调制器。 每个双模激光器包括具有形成在同一基板上的两个部分的激光结构，其同时在不同的纵向模式下操作。 每个部分具有通过深度蚀刻穿过多量子阱结构形成的复合耦合（增益耦合或损耗耦合）光栅，确保激光器之间没有实质的相互作用。 这些部分具有共同的有源介质和共享光路，并且彼此相互注入。 来自分支的信号通过可变延迟线，引入信号之间的相移并在光学压缩器中压缩。 因此，形成N个短脉冲光学列车。 调整信号之间的相移，使得当光组合器中的列进一步组合时，它们在精确的定时交织以形成频率为Nf的一个组合光脉冲串。 因此，以比外部调制器的速度高得多的速度对数据进行编码。 还提供了相应的编码数据的方法。

公开(公告)号：US20020018494A1

公开(公告)日：2002-02-14

申请号：US09811320

申请日：2001-03-17

Inventor： Amarildo Jesus Cavalheiro Vieira ,  Peter Robert Herczfeld ,  Vincent Michael Contarino ,  Yifei Li ,  Linda Jeanne Mullen

IPC: H01S003/10

CPC classification number: H01S3/107 ,  H01Q3/2676 ,  H01S3/2383 ,  H01S5/0623

Abstract: A chirp signal source includes first (11) and second (12) lasers formed on a solid-state chip or substrate (13). Each of the lasers (11, 12) has a resonator or cavity which incorporates or includes electrooptic material which changes refractive index in response to an electric field. The lasers are pumped, and the resulting laser beams are coupled to a light-to-electric converter (62) which combines the light beams to generate an electrical difference frequency, which may be a millimeter-wave frequency when a recurrent ramp voltage is applied to an electrode associated with one of the laser resonators, so as to generate a wavelength sweep by one of the lasers. This structure has the advantages of tending to reduce temperature effects on the difference frequency. In the context of a chirp radar or lidar for measuring small distances, it has the further advantage of a high sweep rate, which can be used to improve the signal-to-noise ratio. A radar or lidar ranging system according to an aspect of the invention uses multiple solid-state lasers, which are thermally coupled together, and at least some of which include electrooptic material in their cavities which changes in refractive index as a function of applied electrical field. The change in refractive index operates allows the lasers to be swept or chirped at a much higher rate than thermal or piezoelectrically operated lasers. (227)

Abstract translation: 啁啾信号源包括形成在固态芯片或衬底（13）上的第一（11）和第二（12）激光器。 每个激光器（11,12）具有谐振器或空腔，其包含或包括响应于电场而改变折射率的电光材料。 激光器被泵送，并且所得到的激光束耦合到组合光束以产生电差频率的光电转换器（62），该电差频率在施加反复斜坡电压时可以是毫米波频率 到与激光谐振器中的一个相关联的电极，以便通过其中一个激光器产生波长扫描。 这种结构具有降低温差对差频的作用。 在用于测量小距离的啁啾雷达或激光雷达的上下文中，其具有高扫描速率的进一步优点，其可用于提高信噪比。 根据本发明的一个方面的雷达或激光雷达测距系统使用多个固态激光器，它们热耦合在一起，并且其中至少一些包括其空腔中的电光材料，其折射率随应用电场的函数而变化 。 折射率变化操作允许激光以比热或压电操作的激光器高得多的速率扫描或啁啾。 （227）

公开(公告)号：US5663639A

公开(公告)日：1997-09-02

申请号：US183057

申请日：1994-01-18

Applicant: Elliott R. Brown ,  Frank W. Smith

Inventor： Elliott R. Brown ,  Frank W. Smith

IPC: H01L31/0232 ,  H01L31/108 ,  H01S5/062 ,  G01R19/00 ,  H01J40/14 ,  H04B10/06

CPC classification number: H01L31/0232 ,  H01L31/1085 ,  H01S5/0623

Abstract: An apparatus and method for optical heterodyne conversion and a radiation source and integrated diagnostics using the apparatus and method are disclosed. The radiation source can operate in a high-power narrow-band mode in which a constant-frequency output is provided or in a low-power broadband mode in which the frequency is tunable to allow the radiation source to act as a sweep oscillator. The apparatus or photomixer includes two sets of interdigitated conductive electrodes formed on top of a crystal lattice formed of column III-V compounds, particularly InAlGaAs compounds. Additional column V atoms are interspersed within the lattice structure to form defect energy states in the bandgap of the host material. The region of the material between the interdigitated electrodes is illuminated by optical radiation containing two different frequencies. Photon absorption in the material causes a current at the difference frequency to be generated and coupled to the interdigitated electrodes. The current is then coupled to a planar transmission line or antenna structure to generate coherent, continuous-wave, unimodal radiation in the microwave, millimeter-wave, or submillimeter-wave regions.

Abstract translation: 公开了一种用于光学外差转换的装置和方法以及使用该装置和方法的辐射源和综合诊断。 辐射源可以在其中提供恒定频率输出的高功率窄带模式中工作，或者在频率可调的低功率宽带模式中工作，以允许辐射源充当扫频振荡器。 该装置或光混混器包括形成在由III-V族化合物，特别是InAlGaAs化合物形成的晶格之上的两组交叉指导电极。 额外的列V原子散布在晶格结构内，以在主体材料的带隙中形成缺陷能态。 交叉电极之间的材料区域被包含两个不同频率的光辐射照射。 材料中的光子吸收导致产生差频的电流并耦合到叉指电极。 然后将电流耦合到平面传输线或天线结构，以在微波，毫米波或亚毫米波区域中产生相干，连续波，单峰辐射。

公开(公告)号：US4840456A

公开(公告)日：1989-06-20

申请号：US138233

申请日：1987-12-28

Applicant: Donald M. Fye

Inventor： Donald M. Fye

IPC: H01S3/08 ,  H01S5/062 ,  H01S5/14 ,  H03B28/00

CPC classification number: H01S5/141 ,  H03B17/00 ,  H01S3/0809 ,  H01S5/0623

Abstract: Electrical signals with frequencies ranging from several tens of megahertz to hundreds of gigahertz are generated by detecting the optical output from a novel double-external-cavity diode laser system. The system provides a convenient means of measuring the frequency response of high speed photodetectors, and it can also be used for the optical generation and transmission of microwave or millimeter wave carriers in applications such as phased array radars.

Abstract translation: 通过检测来自新颖的双外腔二极管激光系统的光输出，产生频率范围从几十MHz到几百GHz的电信号。 该系统提供了测量高速光电探测器频率响应的便利方法，也可用于微波或毫米波载波在相控阵雷达等应用中的光学生成和传输。

公开(公告)号：US11650101B2

公开(公告)日：2023-05-16

申请号：US18063217

申请日：2022-12-08

Applicant: IRsweep AG

Inventor： Stéphane Schilt ,  Pierre Brochard ,  Kenichi Komagata ,  Giulio Terrasanta ,  Andreas Hugi

IPC: H01S5/40 ,  H01S5/062 ,  G01J3/433 ,  G01J3/10 ,  G01J3/42

CPC classification number: G01J3/433 ,  H01S5/0623 ,  H01S5/4006 ,  G01J2003/102 ,  G01J2003/423 ,  G01J2003/4332

Abstract: A dual-comb spectrometer comprising two lasers outputting respective frequency combs having a frequency offset between their intermode beat frequencies. One laser acts as a master and the other as a follower. Although the master laser is driven nominally with a DC drive signal, the current on its drive input line nevertheless oscillates with an AC component that follows the beating of the intermode comb lines lasing in the driven master laser. This effect is exploited by tapping off this AC component and mixing it with a reference frequency to provide the required frequency offset, the mixed signal then being supplied to the follower laser as the AC component of its drive signal. The respective frequency combs in the optical domain are thus phase-locked relative to each other in one degree of freedom, so that the electrical signals obtained by multi-heterodyning the two optical signals are frequency stabilized.

公开(公告)号：US09905999B2

公开(公告)日：2018-02-27

申请号：US15053876

申请日：2016-02-25

Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Jiang Li ,  Kerry Vahala

IPC: H01S5/068 ,  H01S5/0687 ,  H01S5/00 ,  H01S5/04 ,  H01S5/062 ,  H01S5/40 ,  H01S3/06 ,  H01S3/13 ,  H01S3/30 ,  H01S3/00 ,  H03L7/00 ,  H03B17/00 ,  H01S3/067 ,  H01S3/23

CPC classification number: H01S5/0687 ,  H01S3/0085 ,  H01S3/0627 ,  H01S3/06791 ,  H01S3/1304 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/2391 ,  H01S3/30 ,  H01S5/0078 ,  H01S5/041 ,  H01S5/0623 ,  H01S5/06817 ,  H01S5/40 ,  H03B17/00 ,  H03L7/00

Abstract: Microwave-frequency signal generation by generating multiple sideband optical signals separated by phase-modulation frequency fM, generating beat signals between one or two sidebands and one or two optical reference signals, generating a loop-filtered error signal by comparing an electrical reference signal to one of the beat signals or their difference, and controlling with the error signal in a phase-locked loop arrangement a voltage-controlled oscillator (VCO) that drives the sideband generation at the frequency fM. A portion of the VCO output is the generated microwave-frequency signal.