公开(公告)号：US06048103A

公开(公告)日：2000-04-11

申请号：US325318

申请日：1999-06-03

申请人： Yukiko Furukata ,  Yasushi Sato ,  Tetsuya Suga

发明人： Yukiko Furukata ,  Yasushi Sato ,  Tetsuya Suga

IPC分类号： G02B6/26 ,  G02B6/38

CPC分类号： G02B6/3825 ,  G02B6/3846 ,  G02B6/2746 ,  G02B6/3821 ,  G02B6/3845 ,  G02B6/3869 ,  G02B6/3874

摘要： Adapter-type optical isolator 1 has split sleeve 7 within housings A and B. Polarization-independent optical isolator is of such a structure that optical isolator device 3 which is an integral assembly of a Faraday rotator and a birefringent crystal element is provided within hollow cylindrical magnet 4. Beam changing elements 5a and 5b are in the form of optical coupling lenses or core-flared fibers. Adapter-type optical isolator 1 has the polarization-independent optical isolator and beam changing elements 5a and 5b fitted snugly within the bore of split sleeve 7 in the central area in such a way that the polarization-independent optical isolator is held between beam changing elements 5a and 5b. An optical connector using the adapter-type optical isolator 1 is simple in construction, permits simple assembly and adjustments, is small, allows for easy optical adjustments on individual optical parts, features high operational stability and can be incorporated into a wide variety of measuring instruments and communication equipment.

摘要翻译： 适配器式光隔离器1在壳体A和B内具有分裂套筒7.偏振无关的光隔离器具有如下结构：作为法拉第转子和双折射晶体元件的整体组件的光隔离器3设置在中空圆柱形 光束变换元件5a和5b是光学耦合透镜或纤芯扩张光纤的形式。 适配器型光隔离器1具有偏振无关的光隔离器和光束变换元件5a和5b，这些光隔离器和光束改变元件5a和5b紧密地贴合在中心区域中的分裂套筒7的孔内，使得偏振无关的光隔离器保持在光束变换元件 5a和5b。 使用适配器式光隔离器1的光连接器结构简单，组装和调整简单，体积小，可轻松对各个光学部件进行光学调整，具有操作稳定性高，可并入各种测量仪器 和通讯设备。

公开(公告)号：US07253956B2

公开(公告)日：2007-08-07

申请号：US10758692

申请日：2004-01-15

申请人： Michifumi Shoda ,  Yasushi Sato ,  Yukiko Furukata ,  Yoshiyuki Shigeoka

发明人： Michifumi Shoda ,  Yasushi Sato ,  Yukiko Furukata ,  Yoshiyuki Shigeoka

IPC分类号： G02B27/28 ,  G02B1/00 ,  G02B5/30 ,  C03C27/06

CPC分类号： G02F1/093 ,  C03C27/04 ,  C03C27/06 ,  Y10S372/703

摘要： An optical isolator is constructed such that an optical isolator element in which at least one flat Faraday rotator and at least two flat polarizers are bonded to each other into an integral unit by van der Waals forces or hydrogen-bonding forces acting between bonding surfaces of the Faraday rotator and the polarizers is accommodated in a tubular magnetic element.

摘要翻译： 光隔离器被构造成使得光隔离元件，其中至少一个平的法拉第转子和至少两个平的偏振器通过范德华力或者氢键结合力彼此结合为一体， 法拉第旋转器和偏振器容纳在管状磁性元件中。

公开(公告)号：US06867910B2

公开(公告)日：2005-03-15

申请号：US10132081

申请日：2002-04-23

申请人： Yusuke Takei ,  Hiromi Ajima ,  Yukiko Furukata

发明人： Yusuke Takei ,  Hiromi Ajima ,  Yukiko Furukata

IPC分类号： H01S3/067 ,  H01S3/00

CPC分类号： H01S3/067 ,  H01S3/06795

摘要： Provided is a wideband ASE light source, which has a high output and a little ripples in a wide band and the output of which is stable. In a wideband ASE light source constructed of a pumping light source that generates a pumping light, an erbium-doped optical fiber that generates an ASE light by incident pumping light, a reflector that is arranged at one terminal portion of the erbium-doped optical fiber and reflects the ASE light radiated from the erbium-doped optical fiber, an optical multiplexer that is arranged between a terminal portion of the erbium-doped optical fiber and the pumping light and optically multiplexes and demultiplexes the pumping light with or from the ASE light and an optical isolator that is arranged between the third terminal portion of the optical multiplexer and an output terminal and removes a return light to the erbium-doped optical fiber, the optical multiplexer has a maximum value of isolation in a wavelength band of 1570 nm to 1600 nm.

摘要翻译： 提供了宽带ASE光源，其宽输出具有高输出和小波纹，其输出稳定。 在由产生泵浦光的泵浦光源构成的宽带ASE光源中，通过入射泵浦光产生ASE光的掺铒光纤，配置在掺铒光纤的一端部的反射器 并且反射从掺铒光纤辐射的ASE光，布置在掺铒光纤的端子部分和泵浦光之间的光学多路复用器，并且与ASE光进行光学多路复用和解复用激发光，并且 布置在光复用器的第三端子部分和输出端子之间的光隔离器，并且去除掺铒光纤的返回光，光复用器具有在1570nm至1600nm的波长带中的最大隔离度 nm。

公开(公告)号：US06658189B2

公开(公告)日：2003-12-02

申请号：US09828299

申请日：2001-04-05

申请人： Hiromi Ajima ,  Yusuke Takei ,  Yukiko Furukata ,  Michitaka Okuta

发明人： Hiromi Ajima ,  Yusuke Takei ,  Yukiko Furukata ,  Michitaka Okuta

IPC分类号： G02B602

CPC分类号： H01S3/06754 ,  G02B6/2835

摘要： A broadband ASE light source is provided which comprises an amplifying optical fiber doped with rare earth; a pumping light source and an output port both which are connected to one end of the amplifying optical fiber via a multiplexer; and a reflecting or circulating member which is connected to the other end of the amplifying optical fiber, whereby the amplifying optical fiber emits ASE light containing a first and second wavelength bands through the port. Particularly, a second pumping light source may be connected to the other end of the amplifying optical fiber via another multiplexer to widen the wavelength band to longer wavelength side. Further, using the amplifying Er-doped optical fiber with the pumping light sources having wavelength of a 980 nm band, the ASE light source can emit a flattened broadband of 1530 to 1610 nm, combining the two wavelength bands of 1530 to 1570 mn and 1570 to 1610 nm. The input power supplied for the amplifying fiber from the second pumping light source may be less than 20% of the input power supplied for the amplifying fiber from the first pumping light source.

摘要翻译： 提供宽带ASE光源，其包括掺杂有稀土的放大光纤; 泵浦光源和输出端口，两者都经由多路复用器连接到放大光纤的一端; 以及连接到放大光纤的另一端的反射或循环构件，由此放大光纤通过端口发射包含第一和第二波长带的ASE光。 特别地，第二泵浦光源可以经由另一多路复用器连接到放大光纤的另一端，以将波长带宽化到更长的波长侧。 此外，使用具有波长为980nm波段的泵浦光源的放大Er掺杂光纤，ASE光源可以发射1530至1610nm的平坦宽带，将1530至1570nm和1570nm的两个波长带组合 至1610nm。 从第二泵浦光源提供给放大光纤的输入功率可以小于为来自第一泵浦光源的放大光纤提供的输入功率的20％。