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1. 发明授权

US06324326B1 Tapered fiber laser 失效
标题翻译：锥形光纤激光器
公开(公告)号：US06324326B1
公开(公告)日：2001-11-27
申请号：US09378770
申请日：1999-08-20
申请人： Matthew J. Dejneka , John D. Minelly , Luis A. Zenteno
发明人： Matthew J. Dejneka , John D. Minelly , Luis A. Zenteno
IPC分类号： G02B616
CPC分类号： G02B6/4206 , G02B6/1228 , G02B6/14 , G02B6/4203 , H01S3/06708 , H01S3/06745 , H01S3/094003 , H01S3/09415 , H01S5/2036
摘要： A tapered fiber laser having a multi-mode section, a single-mode section, and either a tapered section or fundamental mode matching junction therebetween. The multi-mode section has a large core to directly receive pump light from a broad stripe laser or diode bar, and a length preferably longer than the absorption length of the pump light (so optical amplification occurs predominantly in the multi-mode section). Doping levels can be increased to reduce the multi-mode length. The taper angle is sufficiently small to produce adiabatic compression of the fundamental mode from the multi-mode to single-mode sections, and acts as a cutoff filter favoring lasing of the fundamental mode within the multi-mode section. Alternately, the step junction may have a mode field diameter matched to the lowest-order mode, with laser light output via the single-mode section. The invention can be applied to waveguides (particularly those having an aspect ratio corresponding to a broad stripe laser source), doped with ytterbium or neodymium ions, and is particularly advantageous as a pump source for an erbium-doped fiber amplifier (EDFA).
摘要翻译：一种锥形光纤激光器，具有多模式部分，单模部分以及其间的锥形部分或基模模式匹配连接。多模式部分具有大的芯部，用于直接接收来自宽条形激光器或二极管条的泵浦光，并且其长度优选地大于泵浦光的吸收长度（因此光放大主要在多模式部分中发生）。可以增加掺杂水平以减少多模式长度。锥角足够小以使得从多模式到单模式部分的基模的绝热压缩，并且用作有利于多模式部分内的基模的激光的截止滤波器。或者，台阶结可以具有与最低阶模式匹配的模场直径，通过单模部分输出激光。本发明可以应用于掺杂有镱或钕离子的波导（特别是具有对应于宽条激光源的纵横比的那些），并且作为掺铒光纤放大器（EDFA）的泵浦源是特别有利的。

2. 发明授权

US06836607B2 Cladding-pumped 3-level fiber laser/amplifier 失效
标题翻译：包层泵浦3级光纤激光器/放大器
公开(公告)号：US06836607B2
公开(公告)日：2004-12-28
申请号：US09808270
申请日：2001-03-14
申请人： Matthew J. Dejneka , Adam J. Ellison , Dmitri V. Kuksenkov , John D. Minelly , Carlton M. Truesdale , Luis A. Zenteno
发明人： Matthew J. Dejneka , Adam J. Ellison , Dmitri V. Kuksenkov , John D. Minelly , Carlton M. Truesdale , Luis A. Zenteno
IPC分类号： G02B602
CPC分类号： H01S3/06716 , H01S3/0672 , H01S3/06729 , H01S3/094003 , H01S3/094019 , H01S3/09415
摘要： An optically active fiber (30) is disclosed for making a fiber laser (18) or an amplifier (16). This double-clad structured active fiber (30) has a core (34), doped with an optically excitable ion having a three-level transition. The core (34) has a core refractive index and a core cross-sectional area. An inner cladding (32) surrounds the core (34). The inner cladding (32) has an inner cladding refractive index less than the core refractive index, an inner cladding cross-sectional area between 2 and 25 times greater than that of the core cross-sectional area, and an aspect ratio greater than 1.5:1. An outer cladding (36) surrounds the inner cladding (32) and has an outer cladding refractive index less than the inner cladding refractive index.
摘要翻译：公开了用于制造光纤激光器（18）或放大器（16）的光学活性光纤（30）。这种双包层结构的有源光纤（30）具有掺杂有具有三电平转变的光学可激发离子的芯（34）。芯（34）具有芯折射率和芯横截面积。内包层（32）围绕芯部（34）。内包层（32）的内包层折射率小于纤芯折射率，内包层横截面积比芯横截面积大2至25倍，纵横比大于1.5： 1。外包层（36）围绕内包层（32）并且具有小于内包层折射率的外包层折射率。

3. 发明授权

US06751241B2 Multimode fiber laser gratings 失效
标题翻译：多模光纤激光光栅
公开(公告)号：US06751241B2
公开(公告)日：2004-06-15
申请号：US09968354
申请日：2001-09-27
申请人： Monica K. Davis , Matthew J. Dejneka , John D. Minelly , Luis A. Zenteno
发明人： Monica K. Davis , Matthew J. Dejneka , John D. Minelly , Luis A. Zenteno
IPC分类号： H01S300
CPC分类号： H01S3/063 , H01S3/06729 , H01S3/0675 , H01S3/06754 , H01S3/094042 , H01S3/094069 , H01S3/09415 , H01S3/2308
摘要： An optically active waveguide laser (30) includes a multimode portion (126) for carrying more than one spatial mode at a predetermined wavelength chosen from a bandwidth including a pump wavelength (64) and the lasing wavelength (66). The multimode portion (126) has a first refractive index. A cladding portion (386) is proximate the multimode portion (126). A multimode grating (60, 56, or 62) is written on at least one section (26) of the multimode portion for reflecting the predetermined wavelength.
摘要翻译：光学有源波导激光器（30）包括多模部分（126），用于在从包括泵浦波长（64）和激发波长（66）的带宽选择的预定波长处承载多于一个的空间模式。多模部分（126）具有第一折射率。包层部分（386）靠近多模部分（126）。多模光栅（60,56或62）被写在多模部分的至少一个部分（26）上，用于反射预定波长。

4. 发明授权

US06625182B1 Semiconductor or solid-state laser having an external fiber cavity 失效
标题翻译：具有外部纤维腔的半导体或固体激光器
公开(公告)号：US06625182B1
公开(公告)日：2003-09-23
申请号：US09553716
申请日：2000-04-20
申请人： Dmitri V. Kuksenkov , John D. Minelly , Luis A. Zenteno
发明人： Dmitri V. Kuksenkov , John D. Minelly , Luis A. Zenteno
IPC分类号： H01S3098
CPC分类号： H01S3/094084 , H01S3/06745 , H01S3/09415 , H01S5/041 , H01S5/146 , H01S5/147 , H01S5/18369 , H01S5/18383 , H01S5/2036 , H01S2301/16 , H01S2301/166
摘要： A semiconductor laser having an external cavity including a single-mode optical fiber. A Bragg grating is written onto the fiber which defines the end of the optical cavity, selects the lasing wavelength, and discriminates against the lasing of higher-order transverse modes in the multi-mode gain region. In one embodiment, the semiconductor laser includes an optically active vertical-cavity semiconductor stack similar to a vertical-cavity surface emitting laser. The stack is optically pumped either from the front or the back over a relatively large area such a multi-mode beam is output. Optics couple the multi-mode beam to the single-mode input of the fiber. A partially transmissive mirror of reflectivity between 25 and 40% may be placed on the output surface of the semiconductor stack to form a coupled-cavity laser. A plurality of laser diodes can be angularly positioned around the area of the semiconductor stack being pumped to increase the total pump power. In a second embodiment, the semiconductor laser includes a broad-area diode laser/amplifier. Anamorphic optics couple the asymmetric output of the optical diode to the single-mode fiber. In a third embodiment, a laser diode pumps a solid-state rod composed of an optically active material such as YAG. One end of the rod is coated with a mirror, and the other end is optically coupled to the single-mode fiber having the Bragg grating written thereon. The invention can be advantageously used to optically pump an erbium-doped fiber amplifier.
摘要翻译：一种具有包括单模光纤的外部空腔的半导体激光器。将布拉格光栅写入定义光腔末端的光纤上，选择激光波长，并鉴别多模增益区域中高阶横模的激光。在一个实施例中，半导体激光器包括类似于垂直腔表面发射激光器的光学活性垂直腔半导体堆叠。堆叠在相对大的区域上从前面或后面光学泵浦，这样的多模光束被输出。光纤将多模光束耦合到光纤的单模输入。反射率在25％和40％之间的部分透射镜可以放置在半导体堆叠的输出表面上以形成耦合腔激光器。多个激光二极管可以围绕被泵送的半导体叠层的区域成角度地定位，以增加总泵功率。在第二实施例中，半导体激光器包括广域二极管激光器/放大器。变形光学将光二极管的非对称输出耦合到单模光纤。在第三实施例中，激光二极管泵送由诸如YAG的光学活性材料构成的固态棒。杆的一端涂覆有反射镜，另一端光学耦合到其上写有布拉格光栅的单模光纤。本发明可有利地用于光学泵浦掺铒光纤放大器。

5. 发明申请

US20090003753A1 METHOD FOR GENERATING A LINEAR SINGLE POLARIZATION OUTPUT BEAM 失效
标题翻译：用于生成线性单极化输出光束的方法
公开(公告)号：US20090003753A1
公开(公告)日：2009-01-01
申请号：US11498658
申请日：2006-08-03
申请人： George E. Berkey , Ming-Jun Li , Daniel A. Nolan , Donnell T. Walton , Luis A. Zenteno
发明人： George E. Berkey , Ming-Jun Li , Daniel A. Nolan , Donnell T. Walton , Luis A. Zenteno
IPC分类号： G02F1/01
CPC分类号： H01S3/067 , C03B37/01217 , C03B37/01225 , C03B37/02781 , C03B2201/34 , C03B2203/14 , C03B2203/30 , C03B2205/08 , C03B2205/10 , G02B6/02 , G02B6/0281 , G02B6/03627 , G02B6/03655 , G02B6/03694 , G02B6/105 , H01S3/06729 , H01S3/0675
摘要： A method for generating a linear single-polarization output beam comprises providing an optically active linearly birefringent and linearly dichroic fiber for propagating light and having a single polarization wavelength range and a gain bandwidth; optically pumping the optically active linearly birefringent and linearly dichroic fiber for obtaining fluorescence within the gain bandwidth; and aligning the single-polarization wavelength range to overlap a desired spectral region of the gain profile.
摘要翻译：用于产生线性单偏振输出光束的方法包括提供用于传播光并具有单一偏振波长范围和增益带宽的光学有效线性双折射和线性二色光纤; 光学地泵浦光学有效的线性双折射和线性二色光纤，以在增益带宽内获得荧光; 并且将单极化波长范围对准以与增益曲线图的期望光谱区域重叠。

6. 发明授权

US06987783B2 Three-level air-clad rare-earth doped fiber laser/amplifier 失效
标题翻译：三层包覆稀土掺杂光纤激光器/放大器
公开(公告)号：US06987783B2
公开(公告)日：2006-01-17
申请号：US10741211
申请日：2003-12-19
申请人： James C. Fajardo , Michael T. Gallagher , Anping Liu , (Ying) Lisa Peng , Carlton M. Truesdale , Luis A. Zenteno
发明人： James C. Fajardo , Michael T. Gallagher , Anping Liu , (Ying) Lisa Peng , Carlton M. Truesdale , Luis A. Zenteno
IPC分类号： H01S3/30
CPC分类号： H01S3/063 , H01S3/06729 , H01S3/0675 , H01S3/06754 , H01S3/094042 , H01S3/094069 , H01S3/09415 , H01S3/2308
摘要： An optically-active air-clad fiber (30) includes a core (34, 84) that facilitates doping with an ion optically excitable and having a three-level optical transition when pumped at a first end (28) of an optical cavity (46) by a multimode pump source (72) at a pump wavelength (64) for lasing at a signal wavelength (66) different than the pump wavelength (64) at a second end (29) of the optical cavity (46), the core (34, 84) having a refractive index, wherein the core (34, 84) is transformed from the first end to proximate the second end (29) thereof such that the optically-active fiber (30) is multimode at the pump wavelength proximate to the first end (28), and is single-mode at the signal wavelength proximate to the second end (29). An air-clad (36, 86) surrounds at least one portion of the core (34, 84) and has a lower effective refractive index than the refractive index of the core (34, 84).
摘要翻译：光学活性的空气包层光纤（30）包括：芯（34,84），其有助于掺杂有可激发的离子，并且当在光腔（46）的第一端（28）处泵浦时具有三电平的光学跃迁）通过泵浦波长（64）处的多模泵浦源（72），以在光腔（46）的第二端（29）处以不同于泵浦波长（64）的信号波长（66）激发，芯（34,84），其具有折射率，其中所述芯（34,84）从所述第一端变换到其第二端（29）附近，使得所述光学有源光纤（30）在泵浦波长附近为多模到第一端（28），并且在靠近第二端（29）的信号波长处是单模。包层（36,86）围绕芯（34,84）的至少一部分并且具有比芯（34,84）的折射率更低的有效折射率。

7. 发明授权

US06427491B1 Method for making fibers having cores with non-circular cross-sections 有权
标题翻译：制造具有非圆形横截面的芯的纤维的方法
公开(公告)号：US06427491B1
公开(公告)日：2002-08-06
申请号：US09377926
申请日：1999-08-20
申请人： Gerald E. Burke , Carlton M. Truesdale , Luis A. Zenteno
发明人： Gerald E. Burke , Carlton M. Truesdale , Luis A. Zenteno
IPC分类号： C03B32027
CPC分类号： C03B37/01205 , C03B37/01211 , C03B2203/12
摘要： An optical fiber with a non-circular cross-section is realized by creating a void having the desired cross-section in a housing and filling the void with an optical material. This structure is then collapsed to solidify it and drawn to desired dimensions. The optical material may be rods, soot or ground material.
摘要翻译：具有非圆形截面的光纤通过在壳体中产生具有期望的横截面的空隙并用光学材料填充空隙来实现。然后将该结构折叠以使其固化并拉伸至所需尺寸。光学材料可以是棒，烟炱或研磨材料。

8. 发明授权

US06370180B2 Semiconductor-solid state laser optical waveguide pump 失效
标题翻译：半导体固态激光光波导泵
公开(公告)号：US06370180B2
公开(公告)日：2002-04-09
申请号：US09426460
申请日：1999-10-25
申请人： Luis A. Zenteno
发明人： Luis A. Zenteno
IPC分类号： H01S308
CPC分类号： H01S3/094003 , H01S3/06716 , H01S3/0675 , H01S3/094042 , H01S3/1618
摘要： The invention includes a solid state laser which outputs wavelength emission &lgr;ss centered about 946 nm, combined with a lasing waveguide which includes a Yb doped optical waveguide such that when the &lgr;ss output is inputted into the lasing waveguide the lasing waveguide produces a wavelength emission &lgr;y centered about 980 nm. The invention further includes the utilization of pump light with optical waveguide amplifying devices.
摘要翻译：本发明包括输出以946nm为中心的波长发射羔羊的固体激光器，与包括Yb掺杂光波导的激光波导相结合，使得当羔羊输出被输入激光波导时，激光波导产生波长发射羔羊中心约980nm。本发明还包括利用具有光波导放大装置的泵浦光。

9. 发明授权

US06522450B2 Loss-less tunable per-channel dispersion compensator 失效
公开(公告)号：US06522450B2
公开(公告)日：2003-02-18
申请号：US09841899
申请日：2001-04-25
申请人： Luis A. Zenteno
发明人： Luis A. Zenteno
IPC分类号： G02F103
CPC分类号： G02B6/29349 , G02B6/29394 , H01S3/06725 , H01S3/06791 , H01S5/50
摘要： An apparatus and method of chromatic dispersion includes the negative compensation per channel filter (130) coupled to an optical receiving path (100) for providing a lossless discontinuous per-channel dispersion compensation in the optical receiving path (100). The optical receiving path (100) includes an input port (131), at the input of the filter (130), for receiving an input optical pulse (120) having a packet of waves at corresponding frequencies transmitted and received by an optical fiber (115).

10. 发明授权

US06441953B1 L band multistage amplifier with improved noise figure 有权
标题翻译： L波段多级放大器具有改善的噪声系数
公开(公告)号：US06441953B1
公开(公告)日：2002-08-27
申请号：US09556355
申请日：2000-04-24
申请人： Gregory J. Cowle , Felton A. Flood , Chia Chi Wang , Luis A. Zenteno
发明人： Gregory J. Cowle , Felton A. Flood , Chia Chi Wang , Luis A. Zenteno
IPC分类号： H01S300
CPC分类号： H01S3/06758
摘要： A multi-stage optical fiber amplifier comprises a first gain stage amplifying and optical signal; a pumping source coupled to the first gain stage, a second gain stage coupled to the first gain to further amplifying the optical signal to a desired output signal power, and a second pumping source coupled to the second gain stage. The second pumping source is preferably an erbium-doped fiber laser and has an operating wavelength between about 1520 nm and about 1620 nm. This amplifier achieves good noise figure and high output powers.
摘要翻译：多级光纤放大器包括第一增益级放大和光信号; 耦合到第一增益级的泵浦源，耦合到第一增益的第二增益级以进一步将光信号放大到期望的输出信号功率，以及耦合到第二增益级的第二泵浦源。第二泵浦源优选是掺铒光纤激光器，并且具有在约1520nm和约1620nm之间的工作波长。该放大器实现了良好的噪声系数和高输出功率。

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