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90 条记录 (耗时 0.02 秒)

    Optical device
    31.
    发明授权
    Optical device 有权

    公开(公告)号：US10942311B2

    公开(公告)日：2021-03-09

    申请号：US16812547

    申请日：2020-03-09

    申请人： Fujikura Ltd.

    发明人： Tomoyuki Fujita

    IPC分类号： G02B6/26 ,  G02B6/04 ,  G02B6/42 ,  G02B6/287 ,  G02B6/028 ,  G02B6/28 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/23

    摘要： Provided is an optical device which can control a beam quality of outgoing light. An optical device (10) includes an entrance fiber bundle (12), an exit fiber (13), and a reduced diameter part (11). The reduced diameter part (11) has (i) an entrance end surface (11a) and (ii) an exit end surface (11b) which is narrower in area than the entrance end surface (11a). In a case where the entrance end surface (11a) is viewed from a normal direction of the entrance end surface (11a), a center (C2) of the exit end surface (11b) deviates from a center (C1) of the entrance end surface (11a).

    Ring waveguide modulators
    32.
    发明授权
    Ring waveguide modulators 有权

    公开(公告)号：US10429676B2

    公开(公告)日：2019-10-01

    申请号：US15745712

    申请日：2015-07-23

    申请人： HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    发明人： Mir Ashkan Seyedi ,  Chin-Hui Chen

    IPC分类号： G02F1/01 ,  G02F1/025 ,  G02B6/287

    摘要： In one example, a device includes a bus waveguide to carry a light of a carrier wavelength, a first ring waveguide with a first modulator, a first heater to adjust a resonance wavelength of the first ring waveguide, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate the light of the carrier wavelength to impart one of at least four optical power levels to the light. In another example, a device includes, a bus waveguide, a first ring waveguide with a first modulator, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate a light of a carrier wavelength to impart one of at least four optical power levels to the light.

    Fiber optic couplers, preform and method of making same
    36.
    发明授权
    Fiber optic couplers, preform and method of making same 失效
    光纤耦合器，预制件及其制造方法

    公开(公告)号：US5594822A

    公开(公告)日：1997-01-14

    申请号：US567463

    申请日：1995-12-05

    申请人： George E. Berkey

    发明人： George E. Berkey

    IPC分类号： G02B6/287 ,  G02B6/28 ,  G02B6/26 ,  C03B37/023

    CPC分类号： G02B6/2835 ,  G02B6/2856 ,  G02B2006/2865

    摘要： Overclad fiber optic couplers are made by inserting the uncoated portions of a plurality of optical fibers into the bore of a glass tube, collapsing the tube midregion onto the fibers and stretching the central portion of the tube midregion. The present method utilizes a glass tube the bore of which includes a circular portion and a recess. A plurality of optical fibers are sequentially inserted into the tube by threading the coated end into the circular bore portion until the uncoated portion of fiber is centered in the tube. The uncoated portion of fiber is then transferred laterally into the bore recess. After all fibers have been threaded into the circular bore portion and transferred to the recess, a filler fiber is inserted into the circular bore portion. The resultant coupler exhibits low excess loss.

    摘要翻译： 外包层光纤耦合器通过将多根光纤的未涂覆部分插入玻璃管的孔中，将管中间部分折叠到纤维上并拉伸管中部的中心部分而制成。 本发明的方法利用了一个玻璃管，该玻璃管的孔包括一个圆形部分和一个凹槽。 通过将涂覆的端部穿过圆形孔部分直到纤维的未涂覆部分在管中心为止，将多个光纤顺序地插入管中。 然后将未涂覆的纤维部分横向转移到孔凹部中。 在所有的纤维已经拧入圆形孔部分并转移到凹槽中之后，将填充纤维插入到圆形孔部分中。 所得的偶联剂显示出低的过量损失。

    Protective cladding for a mono-mode directional coupler
    37.
    发明授权
    Protective cladding for a mono-mode directional coupler 失效
    用于单模定向耦合器的保护层

    公开(公告)号：US5430818A

    公开(公告)日：1995-07-04

    申请号：US179680

    申请日：1994-01-11

    申请人： Engelbert Hartl ,  Gert Trommer ,  Hans Poisel

    发明人： Engelbert Hartl ,  Gert Trommer ,  Hans Poisel

    IPC分类号： G02B6/26 ,  G02B6/28 ,  G02B6/287 ,  G02B6/36

    CPC分类号： G02B6/2835 ,  G02B6/2821 ,  B60K2001/045

    摘要： The protective cladding for a mono-mode directional coupler made of at least two incoming and outgoing fiber optic waveguides which are fused to one another along a coupling segment comprises at least two open cladding parts which can be connected to form a tube-shaped cladding. The material of the cladding parts has the same coefficient of expansion as the waveguide material of the mono-mode directional coupler. The protective cladding, being mechanically tightly connected with the incoming and outgoing fiber optic waveguides while leaving open the coupling segment of the mono-mode directional coupler, is closed off in a gas-tight manner such that in the case of temperature changes, there are no mechanical tensions in the coupling segment.

    摘要翻译： 用于由至少两个入射和出射的光纤波导制成的单模定向耦合器的保护包层，其沿着耦合部分彼此熔合，包括至少两个开放包层部分，其可被连接以形成管状包层。 包层部分的材料具有与单模定向耦合器的波导材料相同的膨胀系数。 保持性包层在进入和输出光纤波导机械地紧密连接，同时保持打开单模定向耦合器的耦合段时，以气密方式封闭，使得在温度变化的情况下， 耦合段无机械张力。

    Optical fiber couplers packaged for resistance to bending or breakage, and methods of making the same
    38.
    发明授权
    Optical fiber couplers packaged for resistance to bending or breakage, and methods of making the same 失效
    用于耐弯曲或断裂的光纤耦合器及其制造方法

    公开(公告)号：US5426714A

    公开(公告)日：1995-06-20

    申请号：US249816

    申请日：1994-05-26

    申请人： Kishor P. Gadkaree ,  Rengan Kannabiran ,  Joseph F. Mach

    发明人： Kishor P. Gadkaree ,  Rengan Kannabiran ,  Joseph F. Mach

    IPC分类号： G02B6/287 ,  C08K3/40 ,  G02B6/28 ,  G02B1/04 ,  G02B6/24

    CPC分类号： C08K3/40 ,  G02B6/2821 ,  G02B6/2835

    摘要： A rigid, low expansion formable housing composition can be used to package optical waveguide couplers. The housing is in intimate contact with and strongly bonded to the coupler being packaged. The housing composition includes a formable polymeric resin, a glass-ceramic or ceramic or glass filler, and, optionally, strengthening fibers. The filler has a low thermal expansion to compensate for the high expansion of the resin. A moisture barrier layer may be placed around the housing composition, and it is possible to incorporate a shock absorbing material between the housing and the moisture barrier layer.

    摘要翻译： 刚性的低膨胀可成型外壳组合物可用于封装光波导耦合器。 外壳与要封装的耦合器紧密接触并牢固地连接。 壳体组合物包括可成形聚合物树脂，玻璃陶瓷或陶瓷或玻璃填料，以及任选的增强纤维。 填料具有低热膨胀以补偿树脂的高膨胀。 可以在壳体组合物周围放置防潮层，并且可以在壳体和防潮层之间并入减震材料。

    Fiber amplifier coupler
    39.
    发明授权
    Fiber amplifier coupler 失效
    光纤放大器耦合器

    公开(公告)号：US5295211A

    公开(公告)日：1994-03-15

    申请号：US1337

    申请日：1993-01-07

    申请人： David L. Weidman

    发明人： David L. Weidman

    IPC分类号： G02B6/287 ,  G02B6/28 ,  G02B6/34 ,  G02F1/35 ,  H01S3/067 ,  G02B6/26

    CPC分类号： G02B6/29332 ,  G02B6/2835 ,  H01S3/06754

    摘要： Disclosed is a fiber amplifier system in which a gain fiber is operatively combined with a fiber optic coupler having first and second coupler optical fibers. The coupler fibers are fused together along a portion of their lengths to form a wavelength dependent coupling region whereby most of the light power of a wavelength .lambda..sub.S couples between them, and most of the light power of a wavelength .lambda..sub.P that is introduced into the first fiber remains in it. The mode field diameter of the first coupler fiber is substantially matched to that of the gain fiber and is smaller than that of the second coupler fiber. One end of the first coupler fiber is spliced to the gain fiber. The difference in mode field diameters between said couplers is sufficient create a difference in coupler fiber propagation constants in the coupling region which degrades the coupling of the .lambda..sub.S signal. To overcome the difference in coupler fiber propagation constants in the coupling region, and thereby increase the coupled signal power to an acceptable level, a fiber characteristic, whose affect on MFD is insignificant, is modified in one of the coupler fibers.

    摘要翻译： 公开了一种光纤放大器系统，其中增益光纤与具有第一和第二耦合器光纤的光纤耦合器可操作地组合。 耦合器纤维沿其长度的一部分熔合在一起以形成波长依赖性耦合区域，由此波长（λ）S的大部分光功率在它们之间耦合，并且波长（λ）P的大部分光功率 被引入到其中的第一纤维中。 第一耦合光纤的模场直径基本上与增益光纤的模场直径相比，小于第二耦合光纤的模场直径。 第一耦合器光纤的一端被接合到增益光纤。 所述耦合器之间的模场直径的差异足以产生耦合区域中耦合器光纤传播常数的差异，这降低了（λ）S信号的耦合。 为了克服耦合区域中的耦合器光纤传播常数的差异，从而将耦合信号功率增加到可接受的水平，对MFD的影响不大的光纤特性在耦合器光纤之一上被修改。