公开(公告)号：EP2194620A1

公开(公告)日：2010-06-09

申请号：EP09014861.0

申请日：2009-12-01

Applicant: Draka Comteq B.V.

Inventor： Pastouret, Alain ,  Gonnet, Cédric ,  Burov, Ekaterina

IPC: H01S3/067

CPC classification number: H01S3/06716 ,  H01S3/1603 ,  H01S3/169 ,  H01S3/1691 ,  H01S3/1695 ,  H01S3/176

Abstract: An amplifying optical fibre comprising a central core (10) suitable for transmitting and amplifying an optical signal, and an optical cladding (11) surrounding the central core and suitable for confining the optical signal transmitted in the core, the central core being formed by a main matrix and containing nanoparticles (5) doped with a rare earth. The concentration by weight of the rare earth dopants in each nanoparticle is comprised between 1 and 20% by weight (wt.%), and the concentration of the nanoparticles in the main matrix of the central core is comprised between 0.05% and 1% by volume. Such an optical fibre incorporates rare earth ions at a high concentration whilst avoiding the phenomenon of photo-darkening at high power.

Abstract translation: 一种放大光纤，包括适于透射和放大光信号的中心纤芯（10）和围绕中心纤芯的光学包层（11），其适于限制在芯中传输的光信号，中心芯由 主基质和掺杂稀土的纳米粒子（5）。 每个纳米颗粒中的稀土掺杂剂的重量浓度为1至20重量％（重量％），并且中心芯的主基质中的纳米颗粒的浓度由0.05％和1％之间由 卷。 这种光纤以高浓度掺入稀土离子，同时避免高功率下的光暗现象。

公开(公告)号：EP1788672A3

公开(公告)日：2007-06-06

申请号：EP07002996.2

申请日：2002-11-21

Applicant: GENERAL ATOMICS

Inventor： Perry, Michael, D. ,  Banks, Paul, S. ,  Zweiback, Jason ,  Schleicher, Robert, W., Jr.

IPC: H01S3/042 ,  H01S3/0941 ,  H01S3/07

CPC classification number: H01S3/042 ,  H01S3/0407 ,  H01S3/06 ,  H01S3/0602 ,  H01S3/0612 ,  H01S3/07 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/1603 ,  H01S3/20

Abstract: A laser device (10) which may be used as an oscillator or amplifier comprising a chamber (12) having a volume formed therein and a gain medium (14) within the volume. The gain medium (14) comprises a solid-state element containing active laser ion distributed within the volume. A cooling fluid (16) flows about the solid-state element (14) and a semiconductor laser diode (18) provides optical pump radiation into the volume of the laser chamber (12) such that laser emission from the device passes through the gain medium (14) and the fluid (16). The laser device provides the advantages of a solid-state gain medium laser (e.g. diode-pumping, high power density, etc.), but enables operation at higher average power and beam quality than would be achievable from a pure solid-state medium.

公开(公告)号：EP1756639A1

公开(公告)日：2007-02-28

申请号：EP04739893.8

申请日：2004-06-14

Applicant: FRANCE TELECOM ,  UNIVERSITE DE RENNES I

Inventor： BOUCHET, Olivier ,  MIHAESCU, Adrian ,  FERON, Patrice ,  BESNARD, Pascal

IPC: G02B6/42

CPC classification number: H01S3/05 ,  H01S3/1603 ,  H01S3/17

Abstract: The invention concerns an optical electromagnetic wave amplifying concentrator (100) comprising at least one amplification focusing amplifying device (106) and a receiver (102), the focusing amplifying device (106) being adapted to focus an incident optical electromagnetic wave (116) on the receiver (102), the amplifying concentrator (100) being characterized in that the focusing amplifying device (106) is made of a material doped with active constituents (108) and in that the focusing amplifying device (106) is subjected to an excitation wave (112) so as to cause the active constituents (108) to be shifted to an energy level such that the interaction between the incident electromagnetic wave (116) and said active constituents (108) causes said active constituents (108) to be shifted to a lower energy level and at least one photon having the same wavelength as the incident electromagnetic wave (116) to be emitted towards the receiver (102), the focused part and the emitted photon(s) constituting an incident amplified wave (114) of the incident electromagnetic wave (116).

Abstract translation: 本发明涉及包括至少一个放大聚焦放大装置（106）和接收器（102）的光学电磁波放大集中器（100），聚焦放大装置（106）适于将入射光学电磁波 （102），所述放大集中器（100）的特征在于，所述聚焦放大装置（106）由掺杂有活性成分（108）的材料制成，并且所述聚焦放大装置（106）经受激励 （112），以便使活性成分（108）移动到能级，使得入射电磁波（116）和所述活性成分（108）之间的相互作用导致所述活性成分（108）被移位 到更低的能级并且具有与入射电磁波（116）相同的波长的至少一个光子被发射到接收器（102），聚焦部分和发射的光子co 引入入射电磁波（116）的入射放大波（114）。

公开(公告)号：EP1548904B1

公开(公告)日：2006-10-18

申请号：EP04018719.7

申请日：2004-08-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Park, Nae Man ,  Kim, Tae Youb ,  Sung, Gun Yong, Hanbit Apt. 135-1301

IPC: H01S3/063

CPC classification number: H01S3/0632 ,  B82Y10/00 ,  B82Y20/00 ,  H01S3/16 ,  H01S3/1603 ,  H01S3/163 ,  H01S3/1685 ,  H01S3/1691

公开(公告)号：EP1646117A2

公开(公告)日：2006-04-12

申请号：EP05027744.1

申请日：2001-05-16

Applicant: NORTHROP GRUMMAN CORPORATION

Inventor： Injeyan, Hagop ,  Hoefer, Carolyn S. ,  Palese, Stephen P.

IPC: H01S3/06 ,  H01S3/0941 ,  H01S3/23

CPC classification number: H01S3/0602 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/0615 ,  H01S3/0623 ,  H01S3/0625 ,  H01S3/063 ,  H01S3/08095 ,  H01S3/094053 ,  H01S3/094057 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/1603 ,  H01S3/1643 ,  H01S3/2308 ,  H01S3/2383

Abstract: An optical amplifier (20, 100) includes an elongated slab (22, 102) of solid state lasing material, such as a rare earth doped yttrium-aluminum-garnet (YAG) slab. In order to provide a relatively increased absorption length and thus a higher overall efficiency, the optical amplifier (20, 100) in accordance with the present invention incorporates end pumping in which the pumped light is coaligned with the amplified light resulting in relatively longer absorption lengths and higher overall efficiencies. The coaligned pumped sources are directed to lateral faces of the slab (22, 102) which include footprints (41, 43, 108) or windows. In order to cause internal reflection of the pump beam along the lasing axis, the end faces (28, 30, 110) are formed at about a 45° angle relative to the longitudinal axis which causes the pumped light to be reflected within the slab co-axially with amplified light. In order to confine the absorption of the pumped light to the center portion of the slab (22, 102), the slab (22, 102) may be formed from a composite material with the opposing end portions of the slab formed from an undoped host material while the center portion of the slab along the longitudinal axis is formed from a doped host material. Such a configuration provides relatively low residual thermal lensing with virtually no birefringence. In one embodiment, the pumping light from the diode arrays is coupled to the slab (22, 102) by way of lenses (54) or lens ducts (FIG. 1). In an alternate embodiment, the pumping light is coupled to the slab (22. 102) by way of optical fibers (104, 106). In yet another embodiment (FIG. 8), the pumping light and laser beams are interchanged forming a low-loss straight through slab with end pumped architecture.

Abstract translation: 光放大器（20，100）包括细长板（22，102）的固态激光材料的板坯，检查作为掺稀土元素钇 - 铝 - 石榴石（YAG）。 为了提供一个相对增加吸收长度并且因此更高的总效率，在与本发明雅舞蹈的光放大器（20，100）包括端泵送，其中所述泵浦光被共准直与放大的光在相对较长的吸收长度所得 和更高的整体效率。 所述共准直泵浦源被引导到板（22，102）包括脚印（41，43，108）或窗口的侧面。 为了使沿激射轴泵浦光束的内部反射，端面（28，30，110）相对于所述纵向轴线从而导致泵浦光被板坯共同内反射45°角在FORMED -axially与放大的光。 为了限制在泵送光的吸收，板坯（22，102），所述板（22，102）的中心部分可以由复合材料形成有从在未掺杂的主机形成的板坯的相对的端部 材料，同时沿纵向轴线板坯的中心部分由掺杂主体材料形成。 这样的配置提供具有几乎没有双折射相对低的残余热透镜效应。 在一个中，实施例的从二极管阵列泵浦光由透镜（54）或透镜的管道（图1）的方式连接到所述板（22，102）。 在一个替代实施例中，泵浦光耦合到所述板（22 102）通过光纤（104，106）的方式。 在又一个实施例（图8），将抽运光与激光束被互换直通板坯端形成低损耗泵送体系结构。

公开(公告)号：EP1235315A3

公开(公告)日：2005-02-02

申请号：EP01117915.7

申请日：2001-07-24

Applicant: FURUKAWA CO., LTD.

Inventor： Usuki, Yoshiyuku ,  Omatsu, Takashige

IPC: H01S3/108

CPC classification number: H01S3/1086 ,  H01S3/08086 ,  H01S3/113 ,  H01S3/1603 ,  H01S3/1643

Abstract: To provide a small-sized and low-priced two-wavelength laser apparatus capable of obtaining two-wavelength laser light from one solid crystal at the same time. In the laser apparatus including: a solid crystal of laser medium (2); a semiconductor laser diode (6) for excitation for generating laser light by exciting the laser medium and a condenser (5); and a reflecting mirror (1) and a laser output mirror (4) for resonating light generated from the laser medium, there is used a single crystal (2) PbWO 4 , which is a Raman crystal, as a solid crystal of laser medium to thereby perform laser emission of two wave length with one solid crystal at the same time.

公开(公告)号：EP1402606A2

公开(公告)日：2004-03-31

申请号：EP02749671.0

申请日：2002-06-25

Applicant: 3M Innovative Properties Company

Inventor： HAASE, Michael A.; ,  CHIARELI, Alessandra O.P., ,  MILLER, Thomas J., ,  GRILLO, Donald C.,

IPC: H01S5/10

CPC classification number: H01S5/10 ,  H01S3/0632 ,  H01S3/09415 ,  H01S3/1603 ,  H01S3/17 ,  H01S5/026 ,  H01S5/1014 ,  H01S5/1064 ,  H01S5/14 ,  H01S5/327

Abstract: Disclosed is a laser having a laser diode coupled with a passive intra-cavity tapered waveguide.

公开(公告)号：EP1311878A1

公开(公告)日：2003-05-21

申请号：EP00955265.4

申请日：2000-07-28

Applicant: THE BOARD OF TRUSTEES OFTHE LELAND STANFORD JUNIOR UNIVERSITY

Inventor： FEILLENS, Yannick G. ,  DIGONNET, Michel, J., F. ,  FEJER, Martin, M.

IPC: G02B1/11 ,  G02B6/134 ,  H01S3/10 ,  H01S3/067 ,  H01S3/17 ,  C03C3/00

CPC classification number: H01S3/17 ,  C03C3/095 ,  C03C3/12 ,  H01S3/06716 ,  H01S3/06754 ,  H01S3/1603 ,  H01S3/1661

Abstract: In a method of amplifying optical input signals over a wide bandwidth, the optical input signals are applied to an optical waveguide (810) made from a rare-earth-doped amorphous material (e.g., erbium-doped yttrium aluminum oxide material). The optical input signals include optical signals having wavelengths over a range of at least 80 nanometers, and, preferably, over a range of at least 160 nanometers. Pump light (830) is applied to the optical waveguide (810) to cause the waveguide (810) to provide optical gain to the optical input signals. The optical gain causes the optical signals to be amplified within the waveguide (810) to provide amplified optical signals over the extended 80-160-nanometer range, including, in particular, optical signals having wavelengths at one end of the range and optical signals having wavelengths at a second end of the range.

公开(公告)号：EP0640571B1

公开(公告)日：2001-10-17

申请号：EP94306307.3

申请日：1994-08-26

Applicant: SUMITA OPTICAL GLASS, INC. ,  NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Wang, Yuhu, Sumita Optical Glass, Inc. ,  Ohwaki, Junichi, c/o Nippon Telegraph and

IPC: C03C3/112 ,  C03C4/12 ,  C03C10/16 ,  H01S3/16

CPC classification number: C03C3/07 ,  C03C3/112 ,  C03C4/0071 ,  C03C10/16 ,  H01S3/094092 ,  H01S3/1603 ,  H01S3/17

公开(公告)号：EP1056170A2

公开(公告)日：2000-11-29

申请号：EP00110971.9

申请日：2000-05-26

Applicant: Kyocera Corporation ,  Mitsubishi Cable Industries, Ltd.

Inventor： Okuda, Michitaka, Kyocera Corp., Yokohama Office ,  Ajima, Hiromi, Kyocera Corp., Yokohama Office ,  Takei, Yusuke, Kyocera Corp., Yokohama Office ,  Fujimoto, Hiroshi, Kyocera Corp., Yokohama Office ,  Miyake, Kazuyuki, Mitsubishi Cable, Ind. Ltd., ,  Kawamura, Tatsuhiro, Mitsubishi Cable, Ind. Ltd., ,  Sudo, Yasuhide, Mitsubishi Cable, Ind. Ltd.,

IPC: H01S3/067 ,  G02B6/28

CPC classification number: G02B6/2835 ,  H01S3/06708 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/1601 ,  H01S3/1603

Abstract: An optical fiber coupler for optical fiber amplifier use in the field of optical communications is provided. The optical fiber coupler comprises: a rare earth-doped fiber as an optical amplifying element; a quasi rare earth-doped fiber for entrance of input signal light; a fused-stretch fiber portion as a multiplexing element which connects a part of the rare earth-doped fiber and a parts the quasi rare earth-doped fiber, wherein the fused-stretch fiber portion formed by stretched a fused mixture of parts of the rare earth-doped fiber and the quasi rare earth-doped fiber; and a single mode fiber which is jointed at a fused joint portion to another shortened rare earth-doped fiber connected to the fused-stretch fiber portion on a side connected by the quasi rare earth-doped fiber. The quasi rare earth-doped fiber has substantially equal propagation constant to the rare earth-doped fiber without substantially containing rare earth elements. The optical fiber coupler is fabricated by the steps of jointing a single mode fiber with a rare earth-doped fiber by fusing abutted end faces of both fibers to form a combined fiber; and fusing parallel contact parts of a quasi rare earth-doped fiber and of the rare earth-doped fiber of the combined fiber and then elongating the fused parts in a desired diameter to form a fused-stretch fiber portion.