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71. 发明授权

US06738550B2 Holey waveguide manufacture 失效
标题翻译：多孔波导制造
公开(公告)号：US06738550B2
公开(公告)日：2004-05-18
申请号：US10166724
申请日：2002-06-12
申请人： Graham Town
发明人： Graham Town
IPC分类号： G02B620
CPC分类号： G02B6/105 , B29D11/00721 , C03B37/0122 , C03B2203/14 , C03B2203/42 , G02B6/02357 , G02B6/02361 , G02B6/0239
摘要： A method of forming a holey waveguide, the method comprising the steps of forming a guiding region of a preform, forming a cladding region of the preform, wherein at least a portion of the cladding region of the preform is formed from a plurality of cladding tubes of at least two different diameters, choosing at least one of the diameters of the cladding tubes in a manner such as to reduce a total number of cladding tubes required to build up said portion of the cladding region when compared with utilising cladding tubes of the same diameter for said portion, and drawing the waveguide from the preform.
摘要翻译：一种形成多孔波导的方法，所述方法包括以下步骤：形成预成型件的引导区域，形成预成型件的包层区域，其中预成型件的包层区域的至少一部分由多个包层管至少两个不同的直径，以这样的方式选择包层管的直径中的至少一个，以便与使用相同的包层管相比，减少了建立包层区域的所述部分所需的包层管的总数用于所述部分的直径，以及从预成型件拉制波导。

72. 发明申请

US20040081383A1 Tunable polarizers 有权
标题翻译：可调偏光镜
公开(公告)号：US20040081383A1
公开(公告)日：2004-04-29
申请号：US10278230
申请日：2002-10-23
发明人： Siddharth Ramachandran
IPC分类号： G02B006/26 , G02B006/34
CPC分类号： G02F1/0115 , G02B6/02095 , G02B6/02109 , G02B6/02204 , G02B6/105 , G02B6/274 , G02B6/276 , G02F1/0134 , G02F2201/307 , G02F2203/07 , G02F2203/48
摘要： The specification describes tuning devices for controlling variable polarization dependent loss. These are based on the discovery that essential properties of TAP LPGs can be realized in birefringent fibers, i.e. in fibers where the propagation constants of the core and/or cladding modes are different for different SOPs of light. This yields a device that exhibits broadband loss of varying amounts for different SOPs of input light. Thus, the building block for a broadband in-fiber polarizer is realized. Tuning mechanisms are applied to vary the relative coupling magnitudes for two orthogonal SOPs of light in the device. This yields a polarizer in which the polarization is dynamically tuned.
摘要翻译：该规范描述了用于控制可变偏振相关损耗的调谐装置。这些基于以下发现：TAP LPG的基本特性可以在双折射纤维中实现，即在不同SOP光的芯和/或包层模式的传播常数不同的纤维中。这产生了对于输入光的不同SOP显示出不同量的宽带损耗的装置。因此，实现了用于宽带光纤偏振器的构造块。应用调谐机制来改变装置中两个正交SOP光的相对耦合幅度。这产生了其中极化被动态调谐的偏振器。

73. 发明申请

US20040071420A1 Microstructuring optical wave guide devices with femtosecond optical pulses 有权
公开(公告)号：US20040071420A1
公开(公告)日：2004-04-15
申请号：US10632111
申请日：2003-08-01
发明人： Omur M. Sezerman , Kenneth O. Hill , Garland Best , Dwayne R. J. Miller , Michael Armstrong , Shujie Lin
IPC分类号： G02B006/02 , G02B006/16
CPC分类号： G02B6/02123 , C03C23/0025 , C03C25/6208 , G02B6/02052 , G02B6/02147 , G02B6/105 , G02B6/266 , G02B6/2821 , G02B6/2852 , G02B6/4214
摘要： The present invention is directed to the creation of zones of permanently altered refractive index characteristics in glass waveguiding devices, including optical fibers and optical waveguides pre-existed in a glass substrate. Such zones in which the refractive index has been permanently altered are created in glass using a very high intensity laser beam which is produced by focusing the light output from an ultrafast pulsed laser at a predetermined target region in the glass. The preferred laser is a Ti:Sapphire amplified, frequency-doubled Erbium-doped fiber laser system, providing light pulses of approximately 100 femtosecond duration, each with an energy of between about 1 nanojoule and 1 millijoule, and preferably at a pulse repetition rate of between 500 Hz and 1 GHz. The repetition rate is chosen to deliver pulses faster than the thermal diffusion time over the dimensions of the volume element being modified. This latter process is to accumulate heat to the point of liquefying the material in order to increase material compliance to the femtosecond writing process and increase the subsequent thermal barrier to relaxation of the written structural element and thereby increase the lifetime of the device or structural function. One or more zones of permanently altered refractive index characteristics can be formed in a waveguiding device, such as an optical fiber by utilizing a focused, pulsed, laser light source which generates a focal region having an intensity greater than the threshold for inducing permanent refractive index changes in the device. The focal region is aligned with the device and relative movement between the focal region and the device has the effect of sweeping the focal region across the device in a predetermined path. The result is a zone within the device in which the refractive index characteristics of the device have been permanently altered so as to control amplitude, phase, spatial propagation or polarization states of light within the material.

74. 发明授权

US06707977B2 All fiber polarization mode dispersion compensator 失效
标题翻译：全光纤偏振模色散补偿器
公开(公告)号：US06707977B2
公开(公告)日：2004-03-16
申请号：US10056961
申请日：2002-01-25
申请人： Ching-Kee Chien , Michelle D Fabian , Gregory F Jacobs , Edward F Murphy , Huan-Hung Sheng , Lung-Ming Wu
发明人： Ching-Kee Chien , Michelle D Fabian , Gregory F Jacobs , Edward F Murphy , Huan-Hung Sheng , Lung-Ming Wu
IPC分类号： G02B627
CPC分类号： G02B6/278 , C03C25/106 , G02B6/02395 , G02B6/105 , G02B6/274 , G02F1/0134
摘要： A polarization mode dispersion compensator corrects polarization mode dispersion in an optical signal having a fast polarization mode component, a slow polarization mode component and a time differential between the components. The compensator includes a phase shifter and a variable delay section. An input of the phase shifter is coupled to an optical device that provides an optical signal that exhibits polarization mode dispersion. The phase shifter functions to rotate the optical signal principal states of polarization to a desired orientation. The phase shifter engages a segment of an optical fiber that is coated with a radiation cured coatings. The coating composition is selected so that in response to a preload comprising the application of a stress of about 80 MPa to said coating at about 80° C. and after a stress-relaxation period of at least about 1 hour, at about 80° C., a residual stress exhibited by said coating comprises at least about 60 MPa, and the coating is capable of transmitting a transverse stress to the fiber to controllably change the birefringence of the fiber.
摘要翻译：偏振模色散补偿器校正具有快速偏振模式分量，慢偏振模分量和分量之间的时间差的光信号中的偏振模色散。补偿器包括移相器和可变延迟部分。移相器的输入耦合到提供呈现偏振模色散的光信号的光学装置。移相器用于将光学信号的主要偏振状态旋转到期望的取向。移相器接合涂覆有辐射固化涂层的光纤段。选择涂料组合物，使得响应于预载荷，其包括在约80℃下施加约80MPa的应力到所述涂层，并且在至少约1小时的应力松弛时间后，在约80℃ 由所述涂层表现出的残余应力包括至少约60MPa，并且涂层能够向纤维传递横向应力以可控地改变纤维的双折射。

75. 发明授权

US06697553B2 Compact, low insertion loss, high yield arrayed waveguide grating 有权
标题翻译：紧凑，低插入损耗，高产量阵列波导光栅
公开(公告)号：US06697553B2
公开(公告)日：2004-02-24
申请号：US10077581
申请日：2002-02-15
申请人： Jyoti Kiron Bhardwaj , Robert James Brainard , David J. Chapman , Douglas E. Crafts , Zi-Wen Dong , David Dougherty , Erik W. Egan , James F. Farrell , Mark B. Farrelly , Niranjan Gopinathan , Kenzo Ishida , David K. Nakamoto , Thomas Thuan Nguyen , Suresh Ramalingam , Steven M. Swain , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
发明人： Jyoti Kiron Bhardwaj , Robert James Brainard , David J. Chapman , Douglas E. Crafts , Zi-Wen Dong , David Dougherty , Erik W. Egan , James F. Farrell , Mark B. Farrelly , Niranjan Gopinathan , Kenzo Ishida , David K. Nakamoto , Thomas Thuan Nguyen , Suresh Ramalingam , Steven M. Swain , Sanjay M. Thekdi , Anantharaman Vaidyanathan , Hiroaki Yamada , Yingchao Yan
IPC分类号： G02B634
CPC分类号： G02B6/12011 , G02B6/105 , G02B6/12 , G02B6/12016 , G02B6/12021 , G02B6/12026
摘要： A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).
摘要翻译：平面光波电路包括阵列波导光栅（AWG），其具有输入和输出波导，具有相应长度差的部分弯曲阵列波导和用于在输入/输出和阵列波导之间聚焦光能的平面波导区域。公开了沿着平面波导区域面的最佳波导宽度和间距，其主要决定于AWG尺寸和光学性能。还公开了最佳横截面波导尺寸（例如，宽度和高度）; 波导芯和包层区之间的折射率差异; 和最佳阵列波导长度，路径长度差和自由光谱范围。这些特性，特别是结合先进的光纤附着，钝化和封装技术，可以获得高产出，高性能的AWG（高斯型和平板型）。

76. 发明申请

US20040033043A1 Dispersion tailoring in optical fibres 审中-公开
标题翻译：光纤中的色散调整
公开(公告)号：US20040033043A1
公开(公告)日：2004-02-19
申请号：US10415688
申请日：2003-09-11
发明人： Tanya Mary Monro , David John Richardson
IPC分类号： G02B006/20 , C03B037/022
CPC分类号： G02B6/02338 , C03B37/0122 , C03B37/029 , C03B2203/14 , C03B2203/36 , C03B2203/42 , C03B2205/63 , C03B2205/72 , G02B6/02 , G02B6/02257 , G02B6/02271 , G02B6/02347 , G02B6/02352 , G02B6/02357 , G02B6/02366 , G02B6/105
摘要： An optical fibre is provided with dispersion tuning holes (510) arranged in the wings of the modal field distribution (512). These dispersion tuning holes can be used in a holey or conventional fibre geometry to tune the fibre dispersion independently from the other modal properties, such as the mode shape, to generate birefringence and for other dispersion tuning applications. These holes contrast from the usual nullholey fibrenull holes in that they are generally carefully placed laterally offset from the geometrical axis of the optical fibre by a distance of the same order as the mode field radius. The placement and size of the proposed nulldispersion tuning holesnull ensures that they affect the dispersion of the mode in a desired manner.
摘要翻译：光纤设置有布置在模态场分布（512）的翼中的色散调谐孔（510）。这些色散调谐孔可以用于多孔或常规光纤几何形状，以独立于其它模态性质（例如模式形状）调节光纤色散，以产生双折射和用于其它色散调谐应用。这些孔与通常的“多孔纤维”孔形成对比，因为它们通常小心地从光纤的几何轴线偏离距离与模场半径相同的距离。所提出的“色散调谐孔”的位置和尺寸确保了它们以期望的方式影响模式的色散。

77. 发明授权

US06678454B2 Birefringence-free passive optical component 失效
标题翻译：无双折射无源光学元件
公开(公告)号：US06678454B2
公开(公告)日：2004-01-13
申请号：US09933731
申请日：2001-08-22
申请人： Axel Klekamp , Wiltraud Wischmann , Arnd Kilian
发明人： Axel Klekamp , Wiltraud Wischmann , Arnd Kilian
IPC分类号： G02B610
CPC分类号： G02B6/105 , G02B6/122 , G02B6/126 , G02B2006/12038 , G02B2006/12061
摘要： The production of optical waveguides on waveguide bases which, for example, are formed from a correspondingly structured buffer layer, reduces the birefringence which occurs owing to thermally induced stresses during the glass production process. Therefore, the concentration of dopants (for example boron atoms) in the cladding layer can be reduced to achieve a birefringence-free optical component as complete adaptation of the thermal coefficient of expansion of the glass to that of the silicon substrate is no longer necessary. This has the enormous advantage that optical components, which comprise optical waveguides of this type, remain stable relative to external influences for a long time.
摘要翻译：例如由相应构造的缓冲层形成的波导基底上的光波导的制造减少了由玻璃制造过程中的热应力引起的双折射。因此，不再需要玻璃的热膨胀系数与硅衬底的热膨胀系数的完全适应，所以可以减少包覆层中的掺杂剂（例如硼原子）的浓度，以实现无双折射的光学部件。这具有巨大的优点，即包括这种类型的光波导的光学部件相对于长时间的外部影响保持稳定。

78. 发明授权

US06658171B2 Optical fiber bragg grating polarizer 有权
公开(公告)号：US06658171B2
公开(公告)日：2003-12-02
申请号：US10055204
申请日：2002-01-21
申请人： Luiz Carlos Guedes Valente , Pedro Ignacio Torres Trujillos
发明人： Luiz Carlos Guedes Valente , Pedro Ignacio Torres Trujillos
IPC分类号： G02F1295
CPC分类号： G02B6/105 , G02B6/02109
摘要： Method and apparatus for polarizing light propagating in an optical fiber. The apparatus has an optical fiber having a Fiber Bragg Grating (FBG) section of predetermined length therein, and a force applying device for applying a lateral force to a predetermined portion of the FBG section. The predetermined portion comprises a predetermined percentage of the predetermined length. When the predetermined percentage is equal to or greater than about 10 percent, two polarization states for the light passing through the optical fiber are obtained. When the predetermined percentage is a small portion of the grating length, for example, about 1 percent of the length of a chirped grating, a finely tunable optical fiber polarizer is provided. The apparatus can use standard optical fiber such as telecomm fiber and provides various advantages including the capability of being switched on and off by simply applying and withdrawing the lateral force.

79. 发明申请

US20030185482A1 POLARIZED WAVE SCRAMBLER AND OPTICAL SIGNAL TRANSMISSION APPARATUS 失效
标题翻译：极化波形扫描器和光信号传输装置
公开(公告)号：US20030185482A1
公开(公告)日：2003-10-02
申请号：US10291498
申请日：2002-11-12
申请人： Fujitsu Limited
发明人： Isao NAKAJIMA
IPC分类号： G02B006/17
CPC分类号： G02B6/2786 , G02B6/105 , G02B6/14 , G02B6/274
摘要： Abstract of DisclosureThe present invention provides a polarized wave scrambler and an optical signal transmission apparatus in which polarization mode dispersion, which causes degradation of a transmitted waveform, is suppressed, and which can be easily manufactured and are low-cost and stable. A polarized wave scrambler has a first polarization maintaining optical fiber and a second polarization maintaining optical fiber, wherein a constant component of a phase difference characteristic for optical frequency between a high-speed axis and a low-speed axis of the first polarization maintaining optical fiber is equal to that of the second polarization maintaining optical fiber, and a slope for optical frequency of the phase difference characteristic of the first polarization maintaining optical fiber is different from that of the second polarization maintaining optical fiber, wherein a plane of polarization of the linearly polarized optical signal is set to an angle between the high-speed axis and the low-speed axis of the first polarization maintaining optical fiber and the linearly polarized optical signal is supplied to the first polarization maintaining optical fiber, and wherein the first polarization maintaining optical fiber and the second polarization maintaining optical fiber are spliced such that the high-speed axis of the first polarization maintaining optical fiber corresponds to the low-speed axis of the second polarization maintaining optical fiber, and the low-speed axis of the first polarization maintaining optical fiber corresponds to the high-speed axis of the second polarization maintaining optical fiber.
摘要翻译：发明内容本发明提供一种极化波加扰器和光信号传输装置，其中抑制了发射波形劣化的偏振模色散，并且可以容易地制造并且成本低且稳定。偏振波扰频器具有第一偏振维持光纤和第二偏振保持光纤，其中第一偏振维持光纤的高速轴和低速轴之间的光频率的相位差特性的恒定分量与第二偏振维持光纤相同，并且第一偏振维持光纤的相位差特性的光频率的斜率与第二偏振保持光纤不同，其中线性偏振面偏振光信号被设定为第一偏振保持光纤的高速轴和低速轴之间的角度，并且线偏振光信号被提供给第一偏振保持光纤，并且其中第一偏振保持光光纤和第二极化保持光纤维被拼接，使得第一偏振保持光纤的高速轴对应于第二保偏光纤的低速轴，并且第一偏振保持光纤的低速轴对应于高 - 第二偏振保持光纤的速度轴。

80. 发明授权

US06615615B2 GePSG core for a planar lightwave circuit 有权
标题翻译： GePSG内核，用于平面光波电路
公开(公告)号：US06615615B2
公开(公告)日：2003-09-09
申请号：US09895583
申请日：2001-06-29
申请人： Fan Zhong , Jonathan G. Bornstein
发明人： Fan Zhong , Jonathan G. Bornstein
IPC分类号： G02B610
CPC分类号： G02B6/12023 , G02B6/105 , G02B6/122 , G02B6/132 , G02B2006/12169
摘要： A method of depositing a core layer for an optical waveguide structure of a planar lightwave circuit. A GePSG core for an optical waveguide structure of a planar lightwave circuit is fabricated such that the optical core comprises doped silica glass, wherein the dopant includes Ge and P. In depositing a core layer from which the optical core is formed, two separate doping gasses (e.g., GeH4 and PH3) are added during the PECVD process to make Ge and P doped silica glass (GePSG). The ratio of the Ge dopant and the P dopant is configured to maintain a constant refractive index within the core layer across an anneal temperature range and to reduce a formation of bubbles within the core layer. The ratio of the Ge dopant and the P dopant is also configured to reduce refractive index birefringence within the core layer across an anneal temperature range.
摘要翻译：一种沉积用于平面光波电路的光波导结构的芯层的方法。制造用于平面光波电路的光波导结构的GePSG芯，使得光芯包括掺杂的石英玻璃，其中掺杂剂包括Ge和P.在沉积形成有光纤芯的芯层时，两个单独的掺杂气体（例如，GeH 4和PH 3）在PECVD工艺中被添加以制造Ge和P掺杂的石英玻璃（GePSG）。 Ge掺杂剂和P掺杂剂的比例被配置为在整个退火温度范围内在芯层内保持恒定的折射率，并且减小芯层内的气泡的形成。 Ge掺杂剂和P掺杂剂的比例还被配置为在整个退火温度范围内降低芯层内的折射率双折射。

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