公开(公告)号：US07174070B2

公开(公告)日：2007-02-06

申请号：US10883955

申请日：2004-07-01

Applicant: Dong Churl Kim ,  Dae Su Yee ,  Young Ahn Leem ,  Kyung Hyun Park

Inventor： Dong Churl Kim ,  Dae Su Yee ,  Young Ahn Leem ,  Kyung Hyun Park

IPC: G02B6/26

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：US06788718B1

公开(公告)日：2004-09-07

申请号：US09530316

申请日：2000-04-27

Applicant: Serge Gidon ,  Engin Molva ,  Philippe Thony

Inventor： Serge Gidon ,  Engin Molva ,  Philippe Thony

IPC: H01S313

CPC classification number: H01S3/0627 ,  G01S7/282 ,  G01S7/35 ,  G01S13/86 ,  H01Q3/2676 ,  H01S3/025 ,  H01S3/2383 ,  H01S5/0623 ,  H01S5/423

Abstract: The invention concerns an ultrahigh frequency emitting device, having: at least a first and a second microlaser (22, 24), emitting at two different frequencies &ohgr;1 and &ohgr;2, means of slaving the first and the second microlaser frequency-wise, an array of N elements (N≧2) (52, 54, 56, 58) placed on the path of the beam of the second laser, each element making it possible to impose a phase delay on the beam which passes through it, N means (26, 28, 30, 32) for mixing the beam emitted by the first laser and each of the N delayed beams, and for producing N signals of frequency &ohgr;1-&ohgr;2, N antenna-forming means (34, 36, 38, 40) for emitting radiation at the frequency &ohgr;1-&ohgr;2.

Abstract translation: 本发明涉及一种超高频发射装置，其具有：至少第一和第二微激光器（22,24），以两个不同的频率ω1和ω2发射，使第一和第二微激光器以频率方式使第一和第二微激光器成为一个阵列 放置在第二激光束的光束路径上的N个元件（N> = 2）（52,54,56,58），每个元件使得可以在通过它的光束上施加相位延迟，N表示（ 26，28，30，32），用于混合由第一激光器发射的光束和N个延迟光束中的每一个，并且用于产生频率ω1-ω2，N个天线形成装置（34,36,38,40）的N个信号， 用于发射频率ω1-ω2的辐射。

公开(公告)号：US06650673B2

公开(公告)日：2003-11-18

申请号：US09213088

申请日：1998-12-15

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

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

IPC: H01S319

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：US06614816B2

公开(公告)日：2003-09-02

申请号：US09758041

申请日：2001-01-11

Applicant: Spartak Gevorgian ,  Nils Calander ,  Mats Karlsson ,  Mattias Nilsson ,  Joakim Een ,  Anders Larsson

Inventor： Spartak Gevorgian ,  Nils Calander ,  Mats Karlsson ,  Mattias Nilsson ,  Joakim Een ,  Anders Larsson

IPC: H01S3098

CPC classification number: H03B28/00 ,  H01S5/0623 ,  H01S5/0656 ,  H01S5/4068 ,  H01S5/423

Abstract: Microwaves are generated by heterodyning the outputs of two or more optical lasers which have differing central frequencies to produce beat frequencies in the microwave range. One of the beat frequencies is used to modulate the output of at least one of the lasers so as to produce sidebands which differ from the central frequency by an integral number of the sideband frequency. Each laser is connected to one of the other lasers by a weak optical link to optically injection lock the laser to the sideband of the other laser.

Abstract translation: 通过对具有不同中心频率的两个或多个光学激光器的输出进行外差来产生微波，以在微波范围内产生拍频。 拍频之一用于调制至少一个激光器的输出，以便产生与中心频率不同的边带频率的整数倍的边带。 每个激光器通过弱光连接器连接到其他激光器之一，以将激光器光学注射锁定到另一激光器的边带。

公开(公告)号：US5544183A

公开(公告)日：1996-08-06

申请号：US389714

申请日：1995-02-15

Applicant: Toshiyuki Takeda

Inventor： Toshiyuki Takeda

IPC: H01S3/13 ,  H01S3/139 ,  H01S3/23 ,  H01S5/062 ,  H01S5/0687 ,  H01S5/40 ,  H04B10/07 ,  H04B10/293 ,  H04B10/548 ,  H04B10/564 ,  H04B10/572 ,  H01S3/00

CPC classification number: H04B10/50 ,  H01S3/1304 ,  H01S5/0687 ,  H01S3/1394 ,  H01S3/2383 ,  H01S5/0623 ,  H01S5/40

Abstract: In a variable wavelength light source, a light source emits coherent light, a first optical branching device branches light emitted from the light source, a frequency control circuit controls in frequency a signal generator, an optical phase modulator subjects one of the branched light to phase modulation when the signal generator sends a modulation signal thereto, a variable wavelength light source emits coherent light having a variable frequency, the coherent light is branched by a second optical branching device, an optical coupler combines the output of the second optical branching device with that of the optical phase modulator, the combined light is detected by a light detector, a phase comparator compares the output of the light detector with that of the signal generator to convert the phase difference therebetween into voltage and outputs the same, which is limited in bandwidth by a low-pass filter and is outputted to the variable wavelength light source. As a result, it is possible to provide a variable wavelength light source wherein the frequency difference between the light source and the variable wavelength light source can be varied over a wide range.

Abstract translation: 在可变波长光源中，光源发射相干光，第一光分支装置分支从光源发射的光，频率控制电路频率控制信号发生器，光相位调制器将分支光到相位之一 当信号发生器向其发送调制信号时，可变波长光源发射具有可变频率的相干光，相干光由第二光分路器分支，光耦合器将第二光分支器件的输出与 通过光检测器检测组合光，相位比较器将光检测器的输出与信号发生器的输出进行比较，将其中的相位差转换为电压，并将其输出为带宽限制 通过低通滤波器输出到可变波长光源。 结果，可以提供可变波长光源，其中光源和可变波长光源之间的频率差可以在宽范围内变化。