公开(公告)号：US20180175578A1

公开(公告)日：2018-06-21

申请号：US15810506

申请日：2017-11-13

申请人： Dahv A.V. Kliner ,  Roger L. Farrow

发明人： Dahv A.V. Kliner ,  Roger L. Farrow

IPC分类号： H01S3/067 ,  H01S3/08 ,  H01S3/094

CPC分类号： H01S3/06729 ,  H01S3/06733 ,  H01S3/0675 ,  H01S3/08045 ,  H01S3/094007 ,  H01S3/09408

摘要： An optical apparatus includes one or more pump sources situated to provide laser pump light, and a gain fiber optically coupled to the one or more pump sources, the gain fiber including an actively doped core situated to produce an output beam, an inner cladding and outer cladding surrounding the doped core and situated to propagate pump light, and a polymer cladding surrounding the outer cladding and situated to guide a selected portion of the pump light coupled into the inner and outer claddings of the gain fiber. Methods of pumping a fiber sources include generating pump light from one or more pump sources, coupling the pump light into a glass inner cladding and a glass outer cladding of a gain fiber of the fiber source such that a portion of the pump light is guided by a polymer cladding surrounding the glass outer cladding, and generating a single-mode output beam from the gain fiber.

公开(公告)号：US20180115134A1

公开(公告)日：2018-04-26

申请号：US15568876

申请日：2016-04-22

申请人： Universite de Limoges ,  Centre National de La Recherche Scientifique

发明人： Vincent Roy ,  Romain Dauliat ,  Raphael Emmanuel Jamier

IPC分类号： H01S3/067 ,  H01S3/102

CPC分类号： H01S3/06733 ,  H01S3/06729 ,  H01S3/06737 ,  H01S3/1028

摘要： A monomode optical fiber, and a process for manufacturing such a fiber, that comprises a monomode core and at least one cladding encircling the core. The monomode core comprises at least two zones, a first zone with at least one first refractive index and a second zone with at least one second refractive index different from the first refractive index. The difference between the first refractive index and the second refractive index is of the same order of magnitude as the variation in the refractive index of the second zone between the inactive state and the active state of the fiber.

公开(公告)号：US20180109064A1

公开(公告)日：2018-04-19

申请号：US15782756

申请日：2017-10-12

申请人： NLIGHT, INC.

发明人： Manoj Kanskar

IPC分类号： H01S3/067 ,  H01S3/00 ,  H01S3/23 ,  H01S3/0941 ,  G02B6/24

CPC分类号： H01S3/06758 ,  G02B6/02042 ,  G02B6/24 ,  H01S3/0064 ,  H01S3/0085 ,  H01S3/0672 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094015 ,  H01S3/094042 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1618 ,  H01S3/2308 ,  H01S2301/03

摘要： In an example, a tandem pumped fiber amplifier may include a seed laser, one or more diode pumps, and a plural core fiber including a first core and a second core, the second core surrounding the first core. The plural core fiber may include a first section to operate as an oscillator and a second different section to operate as a power amplifier. The one or more diode pumps may be optically coupled to the first section of the plural core fiber, and the seed laser may be optically coupled to the first core.

公开(公告)号：US09905994B2

公开(公告)日：2018-02-27

申请号：US15361629

申请日：2016-11-28

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Yoshinori Yamamoto ,  Masaaki Hirano

IPC分类号： H01S3/067 ,  G02B6/02 ,  H01S3/30 ,  G02B6/036 ,  H04B10/255 ,  H04B10/291 ,  H04B10/25 ,  H01S3/16

CPC分类号： H01S3/302 ,  G02B6/02014 ,  G02B6/02019 ,  G02B6/036 ,  G02B6/03627 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/1608 ,  H04B10/2543 ,  H04B10/255 ,  H04B10/291 ,  H04B10/2916

摘要： The present invention relates to an optical fiber which can improve OSNR in an optical transmission system in which Raman amplification and an EDFA are combined. With respect to the optical fiber, a predetermined conditional formula is satisfied by an effective area Aeff1450 [μm2] at a wavelength of 1450 nm, a transmission loss α1450 [/km] at a wavelength of 1450 nm, and a transmission loss α1550_dB [dB/km] at a wavelength of 1550 nm. Further, with respect to the optical fiber, another predetermined conditional formula is satisfied by an effective area Aeff1550 [μm2] at a wavelength of 1550 nm, and a transmission loss α1550 [/km] at a wavelength of 1550 nm.

公开(公告)号：US09841557B2

公开(公告)日：2017-12-12

申请号：US14903762

申请日：2014-07-07

申请人： NKT PHOTONICS A/S

发明人： Jeppe Johansen ,  Ole Bang ,  Casper Larsen ,  Thomas Feuchter ,  Carsten L. Thomsen ,  Thomas Vestergaard Andersen

IPC分类号： G02B6/02 ,  G02F1/365 ,  G02F1/35 ,  G01B9/02 ,  G02B6/255 ,  H01S3/067 ,  H01S3/094 ,  H01S3/11

CPC分类号： G02B6/02376 ,  G01B9/02091 ,  G02B6/02214 ,  G02B6/02333 ,  G02B6/02347 ,  G02B6/02361 ,  G02B6/255 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/06725 ,  H01S3/06729 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/1106

摘要： The invention relates to a microstructured optical fiber for generating incoherent supercontinuum light upon feeding of pump light. The microstructured optical fiber has a first section and a second section. A cross-section through the second section perpendicularly to a longitudinal axis of the fiber has a second relative size of microstructure elements and preferably a second pitch that is smaller than a blue edge pitch for the second relative size of microstructure elements. The invention also relates to an incoherent supercontinuum source comprising a microstructured optical fiber according to the invention.

公开(公告)号：US09768578B1

公开(公告)日：2017-09-19

申请号：US15596223

申请日：2017-05-16

申请人： AdValue Photonics, Inc.

发明人： Shibin Jiang ,  Tao Luo ,  Qing Wang ,  Lei Pan

IPC分类号： G02B6/036 ,  H01S3/06 ,  H01S3/16 ,  H01S3/067

CPC分类号： H01S3/06754 ,  G02B6/00 ,  G02B6/036 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/1608 ,  H01S3/161 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/1691 ,  H01S3/176 ,  H01S5/12 ,  H01S2301/03

摘要： Ultrashort pulse fiber amplifier having a pulse width from 200 ps to 200 fs comprising a rare earth oxide doped multicomponent glass fibers for laser amplification, including a core and a cladding, the core comprising at least 2 weight percent glass network modifier selected from BaO, CaO, MgO, ZnO, PbO, K2O, Na2O, Li2O, Y2O3, or combinations; wherein the mode of the core is guided with step index difference between the core and the cladding, a numerical aperture of the fiber is between 0.01 and 0.04; core diameter is from 25 to 120 micron, and a length of the gain fiber is shorter than 60 cm.

公开(公告)号：US20170012401A1

公开(公告)日：2017-01-12

申请号：US15113208

申请日：2015-01-23

申请人： OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AÉROSPATIOALES (ONERA)

发明人： Guillaume Canat ,  William Renard ,  Laurent Lombard ,  Didier Fleury

IPC分类号： H01S3/094 ,  H01S3/067

CPC分类号： H01S3/094049 ,  G02B6/02 ,  H01S3/06704 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/06783 ,  H01S2301/03

摘要： According to one aspect, the invention relates to a device comprising an optical fibre having a high Brillouin threshold, said device including an optical fibre (101) suitable for propagating a high-power optical signal beam, means (11) for coupling a signal beam to an entrance end of the optical fibre (101) and a tubular structure (10) comprising at least one first tube (103) and at least one first adhesive material (102). According to the present description, at least one portion of the optical fibre is immobilized in the tubular structure (10) by means of the first adhesive material (102), which adheres both to the internal surface of the first tube (103) and to the external surface of the optical fibre (101). Furthermore, at room temperature and with no other external stresses on the device, the immobilized portion of the optical fibre (101) is maintained in a compressive state by the tubular structure, the compressive state being such that the relative deformation of the optical fibre is negative or zero in its portion immobilized in the tubular structure, the maximum value of the relative deformation of the immobilized portion of the optical fibre being higher in absolute value than 0.3%.

摘要翻译： 根据一个方面，本发明涉及一种包括具有高布里渊阈值的光纤的装置，所述装置包括适于传播大功率光信号光束的光纤（101），用于耦合信号光束的装置（11） 到所述光纤（101）的入口端和包括至少一个第一管（103）和至少一个第一粘合材料（102）的管状结构（10）。 根据本说明书，通过第一粘合剂材料（102）将光纤的至少一部分固定在管状结构（10）中，第一粘合材料（102）将其粘合到第一管（103）的内表面，并且 光纤（101）的外表面。 此外，在室温下，在器件上没有其他外部应力，光纤（101）的固定部分通过管状结构保持压缩状态，压缩状态使得光纤的相对变形为 固定在管状结构中的部分为负或零，光纤的固定部分的相对变形的最大值绝对值高于0.3％。

公开(公告)号：US20160352063A1

公开(公告)日：2016-12-01

申请号：US15235239

申请日：2016-08-12

申请人： IMRA AMERICA, INC.

发明人： Martin E. Fermann

IPC分类号： H01S3/067 ,  H01S3/11 ,  H01S3/08 ,  H01S3/094

CPC分类号： H01S3/06708 ,  G02B6/26 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06704 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/06725 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06737 ,  H01S3/06745 ,  H01S3/06783 ,  H01S3/08045 ,  H01S3/08054 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094042 ,  H01S3/094069 ,  H01S3/1106 ,  H01S3/1109 ,  H01S3/1115 ,  H01S3/1118 ,  H01S3/1608 ,  H01S3/1618

摘要： A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber. The probability of damage of the absorber may be minimized by the insertion of an additional semiconductor optical power limiter into the cavity.

公开(公告)号：US20160285230A1

公开(公告)日：2016-09-29

申请号：US14669760

申请日：2015-03-26

申请人： OFS FITEL, LLC

发明人： Jeffrey W. Nicholson ,  Andrea Rosales-Garcia ,  Supradeepa V.S. Ramakrishna

IPC分类号： H01S3/13 ,  H01S3/067

CPC分类号： H01S3/06708 ,  H01S3/0078 ,  H01S3/067 ,  H01S3/06729 ,  H01S3/0675 ,  H01S3/094007 ,  H01S3/09408 ,  H01S3/10023 ,  H01S2301/02 ,  H01S2301/03

摘要： A technique is described for eliminating feedback light in a high-power optical device. An optical device is provided that generates, along an optical pathway, an output light at a desired signal wavelength, wherein the generation of the output light at the signal wavelength results in the generation of a feedback light at an undesired feedback wavelength. A port is provided at a selected location along the optical fiber pathway. The port is terminated with a length of a filter fiber, wherein the filter fiber has loss characteristics at the feedback wavelength that result in the elimination of feedback light from the optical fiber pathway through the port.

摘要翻译： 描述了用于消除高功率光学装置中的反馈光的技术。 提供了一种光学装置，其沿着光学路径产生期望信号波长的输出光，其中在信号波长处的输出光的产生导致产生不期望的反馈波长的反馈光。 沿着光纤路径在选定位置设置端口。 端口以一定长度的滤波器光纤端接，其中滤波光纤在反馈波长处具有损耗特性，导致消除来自光纤路径的反馈光通过端口。

公开(公告)号：US09431787B2

公开(公告)日：2016-08-30

申请号：US14851702

申请日：2015-09-11

申请人： FUJIKURA LTD.

发明人： Tomoya Ichige ,  Ryuichiro Goto ,  Masahiro Kashiwagi

IPC分类号： H01S3/00 ,  H01S3/067 ,  H01S3/091 ,  H01S3/0941 ,  H01S3/16

CPC分类号： H01S3/0672 ,  H01S3/06729 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/091 ,  H01S3/09415 ,  H01S3/1618 ,  H01S2301/20

摘要： The refractive index of the first core portion 11a is higher than that of a clad 12, and the refractive index of the second core portion 11b is higher than that of the first core portion 11a. When light of the LP01 mode and light of the LP11 mode are standardized by power, in the core 11, an active element that stimulates to emit light of the predetermined wavelength is doped at a higher concentration in at least a part of an area where power of light of the LP01 mode is larger than that of light of the LP11 mode than at least a part of an area where the power of light of the LP11 mode is larger than that of light of the LP01 mode.

摘要翻译： 第一芯部11a的折射率高于包层12的折射率，第二芯部11b的折射率高于第一芯部11a的折射率。 当LP01模式的光和LP11模式的光通过功率标准化时，在芯11中，激发发射预定波长的光的有源元件在功率的区域的至少一部分中以更高的浓度被掺杂 与LP11模式的光的功率比LP01模式的光的大小的区域的至少一部分相比，LP01模式的光大于LP11模式的光。