公开(公告)号：EP2256878A3

公开(公告)日：2011-03-23

申请号：EP10163905.2

申请日：2010-05-26

申请人： Fujikura, Ltd.

发明人： Shima, Kensuke

IPC分类号： H01S3/067

CPC分类号： H01S3/0675

摘要： [Object] An object of the invention is to provide a fiber laser device capable of stabilizing intensity of laser light output therefrom.
[Means to attain the object] A fiber laser device 100 includes: an pumping light source 11 configured to output pumping light; a rare earth-doped fiber 20 to which the pumping light is input; and a first FBG 30 formed on one side of the rare earth-doped fiber 20 and a second FBG 40 formed on the other side of the rare earth-doped fiber 20 that are configured to reflect light amplified in the rare earth-doped fiber 20, wherein the second FBG 40 has a reflectance lower than that of the first FBG 30, a reflection wavelength band in that of the first FBG 30, and Bragg wavelength on short wavelength side of Bragg wavelength of the first FBG 30.

公开(公告)号：EP2256878A2

公开(公告)日：2010-12-01

申请号：EP10163905.2

申请日：2010-05-26

申请人： Fujikura, Ltd.

发明人： Shima, Kensuke

IPC分类号： H01S3/067

CPC分类号： H01S3/0675

摘要： [Object] An object of the invention is to provide a fiber laser device capable of stabilizing intensity of laser light output therefrom.
[Means to attain the object] A fiber laser device 100 includes: an pumping light source 11 configured to output pumping light; a rare earth-doped fiber 20 to which the pumping light is input; and a first FBG 30 formed on one side of the rare earth-doped fiber 20 and a second FBG 40 formed on the other side of the rare earth-doped fiber 20 that are configured to reflect light amplified in the rare earth-doped fiber 20, wherein the second FBG 40 has a reflectance lower than that of the first FBG 30, a reflection wavelength band in that of the first FBG 30, and Bragg wavelength on short wavelength side of Bragg wavelength of the first FBG 30.

摘要翻译： 本发明的目的是提供一种能够稳定从其输出的激光的强度的光纤激光器件。 实现该目的的手段光纤激光装置100包括：泵浦光源11，被配置为输出泵浦光; 输入泵浦光的稀土掺杂光纤20; 以及形成在稀土掺杂光纤20一侧的第一FBG 30和形成在稀土掺杂光纤20的另一侧上的第二FBG 40，其被配置为反射在稀土掺杂光纤20中放大的光 其中第二FBG 40的反射率低于第一FBG 30的反射率，第一FBG 30的反射波长带和第一FBG 30的布拉格波长的短波长侧的布拉格波长。

公开(公告)号：EP1882962A2

公开(公告)日：2008-01-30

申请号：EP07108921.3

申请日：1997-04-02

申请人： FUJIKURA LTD.

发明人： Shima, Kensuke ,  Nakai, Michihiro ,  Hidaka, Hiroshi ,  Himeno, Kuniharu ,  Okude, Satoshi ,  Wada, Akira ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Ienaka, Takuya ,  Yamauchi, Ryozo

IPC分类号： G02B6/00

CPC分类号： G02B6/124 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/0219

摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core.
The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides. The rejection can be increased by reducing the occurrence of cases wherein propagation modes of the core coupled to cladding modes once again couple to the core in palnar optical waveguide gratings formed by making periodic changes in the waveguide structure along the direction of propagation of light in an optical waveguide having a cladding with a lower refractive index than the core surrounding the core, by making the thickness of the cladding at least thirteen times the thickness of the core.

摘要翻译： 具有辐射模耦合特性的光波导光栅，作为光学部件具有出色的稳定性和可靠性，其中由于使用掺杂有锗和硼的石英玻璃作为芯，因此阻带的中心波长具有低的温度依赖性 。 可以通过在光波导中形成辐射模耦合光波导光栅而不增加光栅长度来减小抑制带宽，其中芯的平均相对折射率差大于光通信波导的平均相对折射率差。 可以通过减少与包层模式耦合的芯的传播模式再次耦合到光栅波导光栅中的芯的情况的发生的情况，可以增加抑制，所述光波导光栅通过沿着光的传播方向沿波导结构的周期性变化而形成 光波导具有通过使包层的厚度至少为芯的厚度的十三倍而具有比围绕芯的芯的折射率低的包层的包层。

公开(公告)号：EP0902308B1

公开(公告)日：2006-08-09

申请号：EP98304293.8

申请日：1998-06-01

申请人： FUJIKURA LTD.

发明人： Yamauchi, Ryozo ,  Wada, Akira ,  Sakai, Tetsuya ,  Tanaka, Nobuyuki ,  Shima, Kensuke ,  Nishide, Kenji ,  Yamasaki, Shigefumi

IPC分类号： G02B6/02 ,  H04B10/00

CPC分类号： G02B6/02147 ,  G02B6/02095

公开(公告)号：EP1482605A2

公开(公告)日：2004-12-01

申请号：EP04253071.7

申请日：2004-05-25

申请人： FUJIKURA LTD.

发明人： Shima, Kensuke ,  Kitabayashi, Tomoharu ,  Sakai, Tetsuya

IPC分类号： H01S3/067 ,  H01S3/094

CPC分类号： H01S3/06708 ,  H01S3/094003

摘要： An inner cladding exposure section 14 is formed by removing a part of an outer cladding 4 of an optical amplification medium fiber 10 which has a porous layer 3 between the inner cladding 2 and the outer cladding 4 in a longitudinal direction. An end surface 23 of an optical fiber 20 for the excited light incidence is cemented on an outer periphery of the exposed inner cladding 2. The excited light 24 is incident into the optical amplification medium fiber 10 from the optical fiber 20 for the excited light incidence. By doing this, it is possible to provide a method for exciting a light in an optical amplification medium fiber which can realize a superior amplitude while emitting the excited light so as to be incident into the optical amplification medium fiber highly efficiently.

摘要翻译： 通过在纵向方向上去除在内包层2和外包层4之间具有多孔层3的光放大介质纤维10的外包层4的一部分来形成内包层曝光部分14。 用于激发的光入射的光纤20的端面23胶合在暴露的内包层2的外周上。激发光24从光纤20入射到光放大介质光纤10中，用于激发光入射 。 通过这样做，可以提供一种用于激发光放大介质光纤中的光的方法，其可以在发射激发光的同时实现优异的振幅，从而高效地入射到光放大介质光纤中。

公开(公告)号：EP1061386A1

公开(公告)日：2000-12-20

申请号：EP00116007.6

申请日：1997-04-02

申请人： FUJIKURA LTD.

发明人： Shima, Kensuke ,  Nakai, Michihiro ,  Hidaka, Hiroshi ,  Himeno, Kuniharu ,  Okude, Satoshi ,  Wada, Akira ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Ienaka, Takuya ,  Yamauchi, Ryozo

IPC分类号： G02B6/16

CPC分类号： G02B6/124 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/0219

摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence. The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides.

摘要翻译： 具有辐射模耦合特性的光波导光栅，作为光学部件具有出色的稳定性和可靠性，其中抑制带的中心波长具有低的温度依赖性。 可以通过在光波导中形成辐射模耦合光波导光栅而不增加光栅长度来减小抑制带宽，其中芯的平均相对折射率差大于光通信波导的平均相对折射率差。

公开(公告)号：EP0805365A3

公开(公告)日：1998-01-07

申请号：EP97400859.1

申请日：1997-04-16

申请人： FUJIKURA LTD.

发明人： Nakai, Michihiro ,  Shima, Kensuke ,  Hidaka, Hiroshi ,  Okude, Satoshi ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Wada, Akira ,  Yamauchi, Ryozo

IPC分类号： G02B6/16

CPC分类号： G02B6/02142 ,  G02B6/02138 ,  G02B6/02152

摘要： A method of producing an optical waveguide grating by exposure to light. An optical waveguide having a core composed of a material wherein the refractive index changes due to exposure to UV light is formed into an optical waveguide grating by applying a grating portion formation step wherein a grating portion is formed by irradiation with UV light at a predetermined spacing, and an overall exposure step after formation of the grating portion wherein the entire grating portion is irradiated with UV light. As a result, the effective refractive index of the grating portion is changed so as to allow the central wavelength to be adjusted without changing the rejection. Consequently, the grating properties can be precisely and easily controlled.

公开(公告)号：EP0800098A3

公开(公告)日：1997-12-03

申请号：EP97400757.7

申请日：1997-04-02

申请人： FUJIKURA LTD.

发明人： Shima, Kensuke ,  Nakai, Michihiro ,  Hidaka, Hiroshi ,  Himeno, Kuniharu ,  Okude, Satoshi ,  Wada, Akira ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Ienaka, Takuya ,  Yamauchi, Ryozo

IPC分类号： G02B6/16

CPC分类号： G02B6/124 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/0219

摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core. The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides. The rejection can be increased by reducing the occurrence of cases wherein propagation modes of the core coupled to cladding modes once again couple to the core in palnar optical waveguide gratings formed by making periodic changes in the waveguide structure along the direction of propagation of light in an optical waveguide having a cladding with a lower refractive index than the core surrounding the core, by making the thickness of the cladding at least thirteen times the thickness of the core.

摘要翻译： 具有辐射模式耦合特性的光波导光栅，作为光学部件具有优异的稳定性和可靠性，其中由于使用掺杂有锗和硼的石英玻璃作为芯部，所述阻带的中心波长具有低温度依赖性 。 通过在其中光纤的平均相对折射率差大于光学通信波导的平均相对折射率差的光学波导中形成辐射模式耦合光波导光栅，可以在不增加光栅长度的情况下缩小抑制带宽。 通过减少耦合到包层模式的纤芯的传播模式再次耦合到在通过使波导结构沿光传播方向周期性变化而形成的双层光波导光栅中的纤芯的情况， 通过使包层的厚度至少为芯的厚度的十三倍，具有比包围芯的芯的折射率低的包层的光波导。