公开(公告)号：US06836488B2

公开(公告)日：2004-12-28

申请号：US10339341

申请日：2003-01-10

Applicant: Dominique Bayart ,  Carlos De Barros ,  Thierry Lopez ,  Xavier Normandin

Inventor： Dominique Bayart ,  Carlos De Barros ,  Thierry Lopez ,  Xavier Normandin

IPC: H01S330

CPC classification number: H01S3/0675 ,  H01S3/08086 ,  H01S3/1055 ,  H01S3/302

Abstract: The present invention relates to a cascaded multi-wavelength Raman fiber laser adapted for emitting radiation of at least one wavelength &lgr;s1, with a length of optical fiber (13) having input (15) and output (16) sections, means (11) for introducing pump radiation of wavelength &lgr;p into said length of optical fiber (13), at least one pair of spaced-apart reflector means (151,161; . . . ; 159, 169), defining an optical cavity belonging to said optical fiber, each of said reflector means having a center wavelength, the reflector means of each pair being located respectively at said input section (15) and said output section (16) of said optical fiber and at least one of said pairs of reflector means having its reflector means located at said output section (16), called output reflector means (161, 162, 163), having a lower reflectivity at said center wavelength than the corresponding reflector means of the same pair (151, 152, 153) located at said input section (15), so as to emit radiation of said output wavelengths out of said optical fiber (13).

Abstract translation: 本发明涉及一种级联多波长拉曼光纤激光器，其适于发射具有输入（15）和输出（16）部分的具有一定长度的光纤（13）的至少一个波长兰波斯1的辐射，用于 将波长兰波特的泵浦辐射引入所述长度的光纤（13）中，至少一对间隔开的反射器装置（151,161 ... ... 159,169）限定属于所述光纤的光学腔， 所述反射器装置具有中心波长，每对的反射器装置分别位于所述光纤的所述输入部分（15）和所述输出部分（16）处，并且所述反射器装置对中的至少一个具有其反射器装置 在所述输出部分（16）处，称为输出反射器装置（161,162,163），其在所述中心波长处的反射率低于位于所述输入部分处的相同对（151,152,153）的相应反射器装置 15），以便emi 所述光纤（13）的所述输出波长的t辐射。

公开(公告)号：US06834061B2

公开(公告)日：2004-12-21

申请号：US10069533

申请日：2002-03-06

Applicant: Jean-Pierre Huignard ,  Arnaud Brignon

Inventor： Jean-Pierre Huignard ,  Arnaud Brignon

IPC: H01S330

CPC classification number: H01S3/067 ,  G02B6/04 ,  G02B6/2848 ,  G02B6/4206 ,  G02F1/0338 ,  G02F2201/04 ,  G02F2201/05 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/302

Abstract: A pumped-fiber laser comprising a multimode doped fiber (1) and a holographic spatial mode conversion device (3).

Abstract translation: 一种包括多模掺杂光纤（1）和全息空间模式转换装置（3）的泵浦光纤激光器。

公开(公告)号：US06829256B2

公开(公告)日：2004-12-07

申请号：US10261605

申请日：2002-10-02

Applicant: Tooru Sugiyama ,  Naoki Akamatsu ,  Kiyoyuki Kawai ,  Hideaki Okano

Inventor： Tooru Sugiyama ,  Naoki Akamatsu ,  Kiyoyuki Kawai ,  Hideaki Okano

IPC: H01S330

CPC classification number: H01S3/067 ,  H01S3/06704 ,  H01S3/0809 ,  H01S3/094096

Abstract: Light from a first excitation light source is incident on one facet of a first optical fiber. A core is doped with a first rare earth substance. A resonant section induces light resonance in the core to generate resonant light, thereby providing selected light at the other facet of the first optical fiber. An optical multi/demultiplexer reflects the light of the selected wavelength in a direction different from that of the first optical fiber. A second excitation light source supplies light to the resonant section of the first optical fiber via the optical multi/demultiplexer and the other facet of the first optical fiber. A second optical fiber guides the light of the selected wavelength from the optical multi/demultiplexer to an exterior.

Abstract translation: 来自第一激发光源的光入射在第一光纤的一个面上。 核心掺杂有第一稀土物质。 谐振部分在芯部中引起光共振以产生谐振光，从而在第一光纤的另一面提供所选择的光。 光学多路复用器/多路分解器以与第一光纤不同的方向反射所选波长的光。 第二激发光源经由光多路复用器和第一光纤的另一面向第一光纤的谐振部分提供光。 第二光纤将所选波长的光从光学多路复用器/解复用器引导到外部。

公开(公告)号：US06819689B2

公开(公告)日：2004-11-16

申请号：US10165979

申请日：2002-06-11

Applicant: Makoto Yoshida ,  Shinichi Harada

Inventor： Makoto Yoshida ,  Shinichi Harada

IPC: H01S330

CPC classification number: H01S3/067 ,  H01S3/042 ,  H01S3/105 ,  H01S3/1112 ,  H01S3/139

Abstract: A passive mode lock fiber laser including an energy generating means. The energy generating means includes a cavity, the cavity includes a gain medium made of an optical fiber for amplifying the laser energy in the cavity, a reflect means for reflecting the laser energy, a phase fluctuation compensating means for compensating a linear phase fluctuation of the gain medium, and an output means for outputting the laser energy generated in the cavity includes a temperature adjusting mechanism for adjusting a temperature of an optical fiber portion and a piezo element position adjusting mechanism for adjusting a position in the optical axis of the reflect means by using a piezo element.

Abstract translation: 一种被动模式锁定光纤激光器，包括能量产生装置。 能量产生装置包括空腔，空腔包括由用于放大空腔中的激光能量的光纤制成的增益介质，用于反射激光能量的反射装置，用于补偿激光能量的线性相位波动的相位波动补偿装置 增益介质，并且用于输出在空腔中产生的激光能量的输出装置包括用于调节光纤部分的温度的温度调节机构和用于通过以下方式调节反射装置的光轴位置的压电元件位置调节机构 使用压电元件。

公开(公告)号：US06788713B1

公开(公告)日：2004-09-07

申请号：US09831995

申请日：2001-05-16

Applicant: Dmitrii Stepanov ,  Zourab Brodzeli

Inventor： Dmitrii Stepanov ,  Zourab Brodzeli

IPC: H01S330

CPC classification number: H01S3/0675 ,  G02F1/3523 ,  H01S3/10076 ,  H01S3/1608

Abstract: Output power fluctuations in a distributed feedback laser arrangement are reduced by inducing a saturable absorption grating in a saturable absorption region. Light is coupled into a DFB region and amplified in an amplification region. A feedback loop reflects a portion of the amplified light, and the counter-propagating beams induce an absorption grating in a saturable absorption region which suppresses output oscillations. The amplification region can comprise an erbium doped fiber, and the saturable absorption region can comprise an underpumped portion of such a fiber, or a further length of such fiber, or a planar waveguide.

Abstract translation: 分布式反馈激光器布置中的输出功率波动通过在可饱和吸收区域中引入可饱和吸收光栅来减小。 光耦合到DFB区域并在放大区域中放大。 反馈环路反映了放大的光的一部分，并且反向传播的光束在可饱和吸收区域中诱导抑制输出振荡的吸收光栅。 放大区域可以包括掺铒光纤，并且可饱和吸收区域可以包括这种光纤的下部分部分，或这种光纤的另一长度，或平面波导。

公开(公告)号：US06763043B2

公开(公告)日：2004-07-13

申请号：US10224157

申请日：2002-08-20

Applicant: Martin A. Putnam ,  Alan D. Kersey ,  Timothy J. Bailey

Inventor： Martin A. Putnam ,  Alan D. Kersey ,  Timothy J. Bailey

IPC: H01S330

CPC classification number: G02B6/02204 ,  G02B6/02 ,  G02B6/02042 ,  G02B6/02085 ,  G02B6/02176 ,  G02B6/0218 ,  G02B6/022 ,  G02B6/29317 ,  G02B6/2932 ,  G02B6/29322 ,  G02B6/29394 ,  G02B6/29395 ,  G02B6/29398 ,  G02F1/0115 ,  G02F1/0128 ,  G02F2201/307 ,  H01S3/0057

Abstract: A tunable dispersion compensating device includes a grating element in the form of a bulk or large diameter waveguide, having an outer cladding disposed about an inner core. The grating element may be etched, grounded or machined to form a generally “dog bone” shape, wherein the end portions of the grating element has a larger diameter than the center portion disposed therebetween. A chirped grating is written or impressed within the portion of the core disposed in the center portion of the grating element. The center portion is tapered to allow different stresses to be applied along the grating length when the grating element is compressed longitudinally by force F, and thereby vary chirp of the grating to tunably compensate for dispersion.

Abstract translation: 可调谐色散补偿装置包括呈大体积或大直径波导形式的光栅元件，其具有围绕内核设置的外包层。 光栅元件可以被蚀刻，接地或机加工以形成大致“狗骨”形状，其中光栅元件的端部具有比设置在其间的中心部分更大的直径。 啁啾光栅被写入或印在设置在光栅元件的中心部分的芯部分内。 中心部分是锥形的，以允许当光栅元件被力F纵向压缩时沿着光栅长度施加不同的应力，从而改变光栅的啁啾线以可调谐地补偿色散。

公开(公告)号：US06751240B2

公开(公告)日：2004-06-15

申请号：US09903732

申请日：2001-07-13

Applicant: Takashi Arisawa ,  Kyoichi Deki ,  Fumiaki Matsuoka

Inventor： Takashi Arisawa ,  Kyoichi Deki ,  Fumiaki Matsuoka

IPC: H01S330

CPC classification number: H01S3/30 ,  H01S3/0057 ,  H01S3/09415 ,  H01S3/10092 ,  H01S3/109 ,  H01S3/113 ,  H01S3/2308 ,  H01S3/2333

Abstract: A method for generating ultra-short pulse amplified Raman laser light. Short pulse laser light is amplified, and a portion thereof is introduced into a Raman oscillator to produce compressed laser light. The compressed light is introduced to a first Raman amplifier. The remainder of the short pulse laser light is introduced to a polarizer, and the reflected light is introduced into the first Raman amplifier to pump it. The light transmitted through the first Raman amplifier that has not contributed to pumping is introduced to a beam splitter to produce a second reflected light that is passed to a second Raman amplifier to pump that amplifier. The compressed light is amplified in the first Raman amplifier and introduced to the second Raman amplifier to further amplify it. This further amplified radiation is passed through delay lines to the beam splitter, which passes only first Stokes radiation to generate ultra-short pulse amplified Raman laser light.

Abstract translation: 一种用于产生超短脉冲放大拉曼激光的方法。 短脉冲激光被放大，其一部分被引入到拉曼振荡器中以产生压缩的激光。 压缩的光被引入第一拉曼放大器。 将短脉冲激光的其余部分引入偏振器，并将反射光引入到第一拉曼放大器中以进行泵浦。 通过第一拉曼放大器传输的光并没有促成泵浦的光被引入分束器以产生第二反射光，该第二反射光被传递到第二拉曼放大器来泵送该放大器。 压缩光在第一拉曼放大器中放大并被引入第二拉曼放大器以进一步放大。 该进一步放大的辐射通过延迟线传送到分束器，分束器仅通过第一斯托克斯辐射以产生超短脉冲放大拉曼激光。

公开(公告)号：US06674566B2

公开(公告)日：2004-01-06

申请号：US09850760

申请日：2001-05-08

Applicant: Christopher Fludger ,  Nigel Jolley

Inventor： Christopher Fludger ,  Nigel Jolley

IPC: H01S330

CPC classification number: H04B10/2916 ,  H01S3/302

Abstract: An optical transmission system comprising a first optical waveguide suitable for transmitting a first information signal, a second optical waveguide suitable for transmitting a second information signal, and input means for providing an electro magnetic radiation signal into said first waveguide, said signal being suitable for providing Raman amplification of the information signals, the system further comprising an optical coupling between said waveguides, arranged to transmit at least a portion of the Raman amplification signal from the first waveguide to the second whilst substantially blocking the transmission of the information signals between the waveguides.

Abstract translation: 一种光传输系统，包括适于发送第一信息信号的第一光波导，适于发送第二信息信号的第二光波导和用于向所述第一波导提供电磁辐射信号的输入装置，所述信号适于提供 信号信号的拉曼放大，所述系统还包括所述波导之间的光耦合，布置成将拉曼放大信号的至少一部分从第一波导传输到第二波导，同时基本上阻挡波导之间的信息信号的传输。

公开(公告)号：US06654390B2

公开(公告)日：2003-11-25

申请号：US10055537

申请日：2002-01-23

Applicant: Christine P. Spiegelberg ,  Shibin Jiang

Inventor： Christine P. Spiegelberg ,  Shibin Jiang

IPC: H01S330

CPC classification number: H01S3/063 ,  H01S3/08 ,  H01S3/08031 ,  H01S3/0813 ,  H01S3/082 ,  H01S3/10092

Abstract: A long-long coupled-cavity glass laser includes a pair of active waveguide cavities that are coherently coupled using a passive waveguide cavity. The active and passive waveguide cavities are of sufficient length so that multiple supermodes and multiple peaks in the coupling coefficient are created over the width of the gain spectra. The supermodes are gain flattened so that the one supermode that coincides with a peak in the coupling coefficient will oscillate. Tunability is achieved by changing the optical path length of either the passive or active waveguide cavities to match a different supermode to a different coupling coefficient peak.

Abstract translation: 长长耦合腔玻璃激光器包括使用无源波导腔相干耦合的一对有源波导腔。 有源和无源波导腔具有足够的长度，使得在增益光谱的宽度上产生耦合系数中的多个超光和多个峰。 超级增益变平坦，使得与耦合系数中的峰值重合的一个超模将振荡。 通过改变无源或有源波导腔的光路长度以匹配不同的超模与不同的耦合系数峰值来实现可调性。

公开(公告)号：US06606187B1

公开(公告)日：2003-08-12

申请号：US09694858

申请日：2000-10-23

Applicant: Mohammed Nazrul Islam ,  Hayden Henry Harris

Inventor： Mohammed Nazrul Islam ,  Hayden Henry Harris

IPC: H01S330

CPC classification number: H04B10/291 ,  H01S3/06754 ,  H01S3/1083 ,  H01S3/302 ,  H04B10/2916 ,  H04B2210/003 ,  H04B2210/258

Abstract: An apparatus and method are described for exploiting almost the full almost 25 THz of bandwidth available in the low-loss window in optical fibers (from 1430 nm to 1620 nm) using a parallel combination of optical amplifiers. The low-loss window at about 1530 nm-1620 nm can be amplified using erbium-doped fiber amplifiers (EDFAs). However, due to the inherent absorption of the erbium at shorter wavelengths, EDFAs cannot be used below about 1525 nm without a significant degradation in performance. For the low-loss window at approximately 1430-1530 nm, amplifiers based on nonlinear polarization in optical fibers can be used effectively. A broadband nonlinear polarization amplifier (NLPA) is disclosed which combines cascaded Raman amplification with parametric amplification or four-wave mixing. In particular, one of the intermediate cascade Raman order wavelengths &lgr;r should lie in close proximity to the zero-dispersion wavelength &lgr;0 of the amplifying fiber. For this intermediate Raman order, spectral broadening will occur due to phase-match with four-wave mixing (if &lgr;r &lgr;0). In further cascaded Raman orders, the gain spectrum will continue to broaden due to the convolution of the gain spectrum with the spectrum from the previous Raman order.

Abstract translation: 描述了一种使用光放大器的并联组合来利用光纤（从1430nm到1620nm）的低损耗窗口中几乎全部近25个THz的带宽的装置和方法。 使用掺铒光纤放大器（EDFA）可以放大约1530 nm-1620 nm的低损耗窗口。 然而，由于较短波长的铒的固有吸收，EDFA不能在低于约1525nm的范围内使用，而性能没有明显降低。 对于大约1430-1530nm的低损耗窗口，可以有效地使用基于光纤中非线性偏振的放大器。 公开了宽带非线性偏振放大器（NLPA），其将级联拉曼放大与参数放大或四波混频组合。 特别地，中间级联拉曼级别波长lambdr之一应该靠近放大光纤的零色散波长lambd0。 对于这种中间拉曼次序，由于与四波混频（如果lambdr lambd0）的相位匹配，将发生频谱展宽。 在进一步的级联拉曼级数中，由于增益谱与来自先前的拉曼序列的光谱的卷积，增益谱将继续扩大。