公开(公告)号：EP0991152A3

公开(公告)日：2001-10-24

申请号：EP99115298.4

申请日：1999-08-03

申请人： JDS FITEL INC.

发明人： Zimmermann, Donald R. ,  Cheng, Yihao

IPC分类号： H01S3/067

CPC分类号： H04B10/2912 ,  G02B5/284 ,  G02B6/29364 ,  G02B6/2937 ,  G02B6/29395 ,  H01S3/10023 ,  H01S3/1608 ,  H01S2301/04 ,  H04B10/2941

摘要： This invention relates to invention relates to a method for filtering and a variable slope optical filter for in-line use with an optical amplifier signal. The filter has a wavelength response that is substantially linear in slope within a band of operation wavelengths of the amplifier; the slope of the filter in an operating band of wavelengths is between zero and a only one of a positive or negative number; furthermore the filter has an amplitude response that has an opposite and counter slope as a function of wavelength to that of a gain tilt of the amplifier within the operation band of wavelengths. Relative movement between the filter and the optical amplifier signal is provided to vary the slope of the filter by means of varying the amplitude wavelength response of the filter.

公开(公告)号：EP0991152A2

公开(公告)日：2000-04-05

申请号：EP99115298.4

申请日：1999-08-03

申请人： JDS FITEL INC.

发明人： Zimmermann, Donald R. ,  Cheng, Yihao

IPC分类号： H01S3/067

CPC分类号： H04B10/2912 ,  G02B5/284 ,  G02B6/29364 ,  G02B6/2937 ,  G02B6/29395 ,  H01S3/10023 ,  H01S3/1608 ,  H01S2301/04 ,  H04B10/2941

摘要： This invention relates to invention relates to a method for filtering and a variable slope optical filter for in-line use with an optical amplifier signal. The filter has a wavelength response that is substantially linear in slope within a band of operation wavelengths of the amplifier; the slope of the filter in an operating band of wavelengths is between zero and a only one of a positive or negative number; furthermore the filter has an amplitude response that has an opposite and counter slope as a function of wavelength to that of a gain tilt of the amplifier within the operation band of wavelengths. Relative movement between the filter and the optical amplifier signal is provided to vary the slope of the filter by means of varying the amplitude wavelength response of the filter.

摘要翻译： 本发明涉及一种用于滤波的方法和一种用于与光放大器信号一起使用的可变斜率滤光器。 滤波器具有波长响应，其在放大器的工作波长范围内的斜率基本上是线性的; 波长工作频带中的滤波器的斜率在零和仅为正数或负数之间; 此外，滤波器具有幅度响应，其具有与波长的操作频带内的放大器的增益倾斜的波长的函数相反的和相反的斜率。 提供滤波器和光放大器信号之间的相对运动，以通过改变滤波器的幅度波长响应来改变滤波器的斜率。

公开(公告)号：EP0959373A1

公开(公告)日：1999-11-24

申请号：EP99107951.8

申请日：1999-04-22

申请人： JDS FITEL INC.

发明人： Campbell-Miller, Margot ,  Kawasaki, Brian S. ,  Cheng, Yihao ,  Galic, Nebojsa ,  Pomerant, Gary

IPC分类号： G02B5/20 ,  G02B6/18 ,  G02B5/28 ,  G02B6/293 ,  H04J14/02

CPC分类号： G02B6/29364 ,  G02B5/20 ,  G02B6/2937

摘要： A multi-pass optical filter (8) using two identical filters provides narrower band filtering by double filtering an optical signal passing therethrough. Although passing a beam of light at an optical filter (8) having a substantially thick optical thickness is known to have significant coupling losses due to angular misalignment of the output beam and the receiving optical fibre, it has been found that twice filtering in the conventional manner by serially coupling two same filters (A,B) increases coupling losses. However, this invention provides a coupling arrangement wherein losses are significantly lessened by offsetting the axes (73a,73b) of the lensed filters such that the beam exiting the first filter (A) couples into the second filter (B) as it would be reflected backward into the first filter (A).

摘要翻译： 使用两个相同滤波器的多通滤光器（8）通过对通过其中的光信号进行双重滤波来提供较窄带滤波。 已知由于输出光束和接收光纤的角度未对准而将具有基本厚的光学厚度的光学滤光器（8）通过光束具有显着的耦合损耗，已经发现在常规 通过串联耦合两个相同的滤波器（A，B）的方式增加耦合损耗。 然而，本发明提供了一种耦合装置，其中通过偏置透镜滤光器的轴线（73a，73b）来显着降低损耗，使得离开第一滤光器（A）的光束将被反射到第二滤光器（B） 落入第一个过滤器（A）。

公开(公告)号：EP0945750A2

公开(公告)日：1999-09-29

申请号：EP99105601.1

申请日：1999-03-18

申请人： JDS FITEL INC.

发明人： Cheng, Yihao

IPC分类号： G02B27/28 ,  G02B6/28

CPC分类号： G02B6/272 ,  G02B6/266 ,  G02B6/2746 ,  G02B6/2773 ,  G02B6/2848 ,  G02B6/2937 ,  G02B6/29394 ,  G02B6/32 ,  G02B27/283

摘要： A polarization beam splitter combiner uses a birefringent crystal that is a fraction of the size of conventional crystals used in similar devices. Since the crystal is considerably shorter in length, the beam passing through the crystal can be uncollimated, spreading very little from one end to the other. Launching uncollimated beams through a short small crystal obviates the requirement for lenses at the end face of the crystal having two waveguides coupled thereto. Since lenses are not required the waveguides at the input/output end face can be very closely spaced apart. Conventional lensed devices utilizing a pair of lenses at an input/output end face must be considerably larger in order to accommodate the lenses and resulting collimated beams.

摘要翻译： 偏振分束器组合器使用的双折射晶体是类似器件中使用的常规晶体尺寸的一部分。 由于晶体的长度相当短，因此通过晶体的光束可能不会发生偏振，从一端到另一端传播非常少。 通过短的小晶体发射未经过校准的光束避免了在晶体的端面上具有耦合到其上的两个波导的透镜的需求。 由于不需要透镜，输入/输出端面处的波导可以非常紧密地间隔开。 在输入/输出端面上使用一对透镜的常规透镜装置必须相当大以适应透镜和所产生的准直光束。

公开(公告)号：EP0939325A1

公开(公告)日：1999-09-01

申请号：EP99103429.9

申请日：1999-02-23

申请人： JDS FITEL INC.

发明人： Finak, Josef ,  Teitelbaum, Neil ,  Cheng, Yihao

IPC分类号： G02B6/26 ,  G02B6/32

CPC分类号： G02B6/2937 ,  G02B6/32

摘要： The present invention relates to a coupling element for coupling between optical elements, for instance a ferrule encased fiber end and a lens, two lenses, or filter and lens assemblies, which provides a reliable joint with a determined spacing and angular orientation between them if needed. Advantageously, the coupling in accordance with the present invention does not obscure optical transmission through the coupling with an epoxy layer. A stand off element (20) is provided which has opposite reference surfaces (21) for joining the end faces (15,17) of the optical elements (14,16) and a central aperture (22), slot or equivalent open area for light transmission In use the open area (22) is aligned, for example with the fiber end (15) and the desired port (17) in the lens (16). Adhesive connection can be provided between the opposite surfaces (21) of the stand off element (20) and the coupling end faces (15,17) of the optical elements. No epoxy is applied over the open area (22). Other securing methods such as external securing elements can be used. Alignment is established by the planar surfaces (21) of the stand off element (20). The separation between elements can be accurately established by selecting the desired thickness between faces (21) of the stand off element (20). Alternatively, the surfaces of the stand off element may be angled to compliment the surfaces of the elements, or to provide an accurate angled coupling. Loss is reduced by not transmitting light through an epoxy layer.

摘要翻译： 本发明涉及用于在光学元件之间耦合的耦合元件，例如套圈封装的光纤端和透镜，两个透镜或滤光器和透镜组件，其在需要时提供具有确定的间距和角度取向的可靠接头 。 有利地，根据本发明的联接器不会通过与环氧树脂层的联接来遮蔽光学传输。 提供一个支座元件（20），其具有用于接合光学元件（14,16）的端面（15,17）和中心孔（22）的相对的参考表面（21），用于 光透射在使用中，开放区域（22）例如与光纤端部（15）和透镜（16）中的期望端口（17）对准。 可以在支架元件（20）的相对表面（21）和光学元件的联接端面（15,17）之间提供粘合剂连接。 在开放区域（22）上不施加环氧树脂。 可以使用诸如外部固定元件的其它固定方法。 通过支架元件（20）的平面（21）建立对准。 可以通过选择支架元件（20）的面（21）之间的期望厚度来精确地建立元件之间的间隔。 或者，支架元件的表面可以成角度以补偿元件的表面，或提供精确的角度耦合。 通过不透过环氧树脂层的光来减少损耗。

公开(公告)号：EP0856764A2

公开(公告)日：1998-08-05

申请号：EP98101281.8

申请日：1998-01-26

申请人： JDS FITEL INC.

发明人： Duck, Gary S. ,  Cheng, Yihao

IPC分类号： G02F1/00

CPC分类号： G02B6/2937 ,  G02B6/29389

摘要： An optical device is disclosed wherein a first GRIN lens and a second GRIN lens having their optical axes offset. The first GRIN lens has one or more input ports at an input end. The second GRIN lens is disposed to receive light from the first GRIN lens. A reflecting surface is coated onto a second end face of the second GRIN lens or alternatively is disposed adjacent to the second end face and positioned to reflect an input beam of light launched into the input end face of the first GRIN lens. The reflective surface is at a location where light incident upon it to be returned to the first GRIN lens is collimated. By placing a filter and third GRIN lens between the first and second lenses double filtering may be achieved at the pass band or pass wavelength of the filter. Furthermore, the more simple arrangement including only first and second lenses provides a means of directing light into and out of the device at different angles or directions with respect to the optical axis of the first lens.

摘要翻译： 公开了一种光学装置，其中第一GRIN透镜和其光轴偏移的第二GRIN透镜。 第一个GRIN镜头在输入端有一个或多个输入端口。 第二GRIN透镜设置成接收来自第一GRIN透镜的光。 反射表面被涂覆到第二GRIN透镜的第二端面上，或者替代地被布置为与第二端面相邻并且被定位成反射投射到第一GRIN透镜的输入端面中的输入光束。 反射表面处于入射到其上的光返回到第一GRIN透镜的位置。 通过在第一和第二透镜之间放置滤光器和第三GRIN透镜，可以在滤光器的通带或通过波长处实现双重滤光。 此外，仅包括第一透镜和第二透镜的更简单的布置提供了以相对于第一透镜的光轴在不同角度或方向将光引导入设备的方式。

公开(公告)号：EP0947865B1

公开(公告)日：2002-06-05

申请号：EP99106016.1

申请日：1999-03-25

申请人： JDS FITEL INC.

发明人： Duck, Gary S. ,  Teitelbaum, Neil ,  Cheng, Yihao ,  Delisle, Vincent

IPC分类号： G02B6/34

CPC分类号： G02B6/2937 ,  G02B6/2938 ,  G02B6/3833

公开(公告)号：EP0945750A3

公开(公告)日：2001-02-07

申请号：EP99105601.1

申请日：1999-03-18

申请人： JDS FITEL INC.

发明人： Cheng, Yihao

IPC分类号： G02B27/28 ,  G02B6/26 ,  G02B6/34 ,  G02B6/28

CPC分类号： G02B6/272 ,  G02B6/266 ,  G02B6/2746 ,  G02B6/2773 ,  G02B6/2848 ,  G02B6/2937 ,  G02B6/29394 ,  G02B6/32 ,  G02B27/283

摘要： A polarization beam splitter combiner uses a birefringent crystal that is a fraction of the size of conventional crystals used in similar devices. Since the crystal is considerably shorter in length, the beam passing through the crystal can be uncollimated, spreading very little from one end to the other. Launching uncollimated beams through a short small crystal (30) obviates the requirement for lenses at the end face of the crystal having two optical fibres (16a,16b) coupled thereto. Since lenses are not required the optial fibres (16a,16b,16c) at the input/output end face can be very closely spaced apart. Conventional lensed devices utilizing a pair of lenses at an input/output end face must be considerably larger in order to accommodate the lenses and resulting collimated beams.

摘要翻译： 偏振分束器组合器使用的双折射晶体是类似器件中使用的常规晶体尺寸的一部分。 由于晶体的长度相当短，因此通过晶体的光束可能不会发生偏振，从一端到另一端传播非常少。 通过短的小晶体（30）发射未经过校正的光束避免了在具有耦合到其上的两根光纤（16a，16b）的晶体端面处的透镜需求。 由于不需要透镜，输入/输出端面处的光纤（16a，16b，16c）可以非常接近地间隔开。 在输入/输出端面上使用一对透镜的常规透镜装置必须相当大以适应透镜和所产生的准直光束。

公开(公告)号：EP0971248A2

公开(公告)日：2000-01-12

申请号：EP99112940.4

申请日：1999-07-05

申请人： JDS FITEL INC.

发明人： Cheng, Yihao ,  Teitelbaum, Neil ,  Finak, Josef

IPC分类号： G02B6/04 ,  G02B6/38 ,  G02B6/44

CPC分类号： G02B6/3861 ,  G02B6/32 ,  G02B6/3833 ,  G02B6/3837

摘要： A sleeve for retaining a plurality of optical fibers in a close or contacting relationship is provided. The sleeve has a bore receiving a number of optical fibers. The internal surface of the bore is such that when that number of optical fibers are contained therein the bore surface defines a perimeter substantially equally spaced about the external surfaces of the optical fibers. Advantageously the sleeve of the present invention may be sealed about the plurality of fibers by vitrification or adhesive to support the fibers or fiber ends without causing unequally distributed stress in the fibers. Signal quality is thus better assured.

摘要翻译： 提供了用于保持紧密或接触关系的多根光纤的套筒。 套管具有容纳多根光纤的孔。 孔的内表面使得当其中容纳有这种数量的光纤时，孔表面限定围绕光纤的外表面基本上等间隔的周边。 有利地，本发明的套筒可以通过玻璃化或粘合剂围绕多根纤维密封以支撑纤维或纤维端部，而不会在纤维中引起不均等分布的应力。 信号质量因此更好的保证。

公开(公告)号：EP0874263A1

公开(公告)日：1998-10-28

申请号：EP98106243.3

申请日：1998-04-06

申请人： JDS FITEL INC.

发明人： Cheng, Yihao

IPC分类号： G02F1/09 ,  G02B6/26 ,  G02B27/28

CPC分类号： G02B6/2746 ,  G02F1/093

摘要： A compact non-reciprocal optical waveguide-circulating device is disclosed. Three optical waveguides (8a,b,c) are disposed along side one another at an input end adjacent a thin birefringent crystal (10) to which they are optically coupled. The circulating device also includes at a distal end, a mirror (20) for reflecting light backwards and providing a folded configuration. The device is capable of accepting a non-collimated beam of light that is launched from the input end through the birefringent crystal (10) and rotating elements (12a,b,c,d,14). By providing end faces at one end of the waveguides that are mode field expanded, light is effectively coupled between the waveguides and the adjacent crystal. A grin lens (18) is disposed between a Faraday rotator (14) ane the mirror (20).

摘要翻译： 公开了一种紧凑的非互易光波导循环装置。 三个光波导（8a，b，c）在与光耦合的薄双折射晶体（10）相邻的输入端处彼此相对地设置。 循环装置还包括在远端，用于向后反射光并提供折叠构造的反射镜（20）。 该装置能够接受从投影端通过双折射晶体（10）和旋转元件（12a，b，c，d，14）发射的非准直光束。 通过在模场扩展的波导的一端处提供端面，光被有效地耦合在波导和相邻晶体之间。 微型透镜（18）设置在反射镜（20）之间的法拉第旋转器（14）之间。