公开(公告)号：US06258743B1

公开(公告)日：2001-07-10

申请号：US09146518

申请日：1998-09-03

申请人： Debra Anne Fleming ,  David Wilfred Johnson ,  Glen Robert Kowach ,  Paul Joseph Lemaire

发明人： Debra Anne Fleming ,  David Wilfred Johnson ,  Glen Robert Kowach ,  Paul Joseph Lemaire

IPC分类号： C04B3548

CPC分类号： G02B6/0218 ,  C04B35/486 ,  C04B35/495

摘要： Ceramic monoliths are described which exhibit tunable coefficients of thermal expansion from about −5 to −11×10−6° C.−1 near ambient temperatures. These two-phase ceramics, which are fabricated, for example, by reactive sintering of WO3 and ZrO2, consists of a matrix of ZrW2O8 with inclusions of ZrO2 having diameters less than 10 &mgr;m. Additives may increase the density of the monoliths to greater than 98% of the calculated density. Green body densities, pre-sintered particle size distribution, sintering atmosphere, microstructure, and mechanical properties are discussed. These ceramics may be used as substrates for thermally compensating fiber Bragg gratings.

摘要翻译： 描述了陶瓷整料，其在环境温度附近表现出约-5至-11×10 -6℃-1的可调热膨胀系数。 这些由WO 3和ZrO 2的反应烧结制成的两相陶瓷由ZrW 2 O 8基体和直径小于10um的ZrO2夹杂物构成。 添加剂可将整料的密度提高到计算密度的98％以上。 讨论了绿体密度，预烧结粒度分布，烧结气氛，微观结构和力学性能。 这些陶瓷可以用作热补偿光纤布拉格光栅的基板。

公开(公告)号：US06486999B1

公开(公告)日：2002-11-26

申请号：US09525512

申请日：2000-03-15

申请人： David Alan Ackerman ,  Richard Bendicks Bylsma ,  Robert Louis Hartman ,  Glen Robert Kowach ,  Malcolm Ellis Lines ,  Lynn Frances Schneemeyer ,  Thomas Lawson Koch

发明人： David Alan Ackerman ,  Richard Bendicks Bylsma ,  Robert Louis Hartman ,  Glen Robert Kowach ,  Malcolm Ellis Lines ,  Lynn Frances Schneemeyer ,  Thomas Lawson Koch

IPC分类号： G02F101

CPC分类号： G02F1/0147 ,  G02B5/284 ,  G02B6/29352 ,  G02B6/29358 ,  G02B6/29398 ,  G02B6/4215 ,  G02B6/4266 ,  G02B6/4287 ,  G02B7/008 ,  G02B26/001 ,  G02B2006/12159 ,  G02F2001/212 ,  G02F2001/213 ,  H01S5/068 ,  H01S5/125

摘要： The thermo-optic behavior of an optical path over a range of temperatures &Dgr;T is controlled by determining a figure-of-merit (FOM) for the optical path and including in the path a body of crystalline material that enables the conditions specified by the FOM to be satisfied. The crystalline material is highly transparent at a wavelength &lgr; of radiation propagating in the path, and it has a coefficient of thermal expansion (CTE) and a refractive index n such that the CTE and dn/dT are mutually adapted to satisfy the FOM over the range &Dgr;T. In one embodiment, the CTE and dn/dT of an etalon compensate one another so as to perform frequency discrimination that is essentially temperature insensitive over the range &Dgr;T. In a preferred embodiment of the optical etalon the crystalline material comprises LiCaAlF6.

摘要翻译： 通过确定光路的品质因数（FOM）并在路径中包括能够使FOM规定的条件的结晶材料的主体，来控制在温度范围DELTAT上的光路的热光学行为 要满足 结晶材料在路径中传播的辐射的波长范围内是高度透明的，并且其具有热膨胀系数（CTE）和折射率n，使得CTE和dn / dT相互适应以满足FOM超过 范围DELTAT。 在一个实施例中，标准具的CTE和dn / dT彼此补偿，以便在DELTAT的范围上执行基本上温度不敏感的频率鉴别。 在光学标准具的优选实施例中，结晶材料包括LiCaAlF6。

公开(公告)号：US06408118B1

公开(公告)日：2002-06-18

申请号：US09648948

申请日：2000-08-25

申请人： Ashish Ahuja ,  Benjamin John Eggleton ,  Jon W. Engelberth ,  Arturo Hale ,  Glen Robert Kowach ,  Sharad Ramanathan ,  Steven Herbert Simon ,  Paul Stephen Westbrook

发明人： Ashish Ahuja ,  Benjamin John Eggleton ,  Jon W. Engelberth ,  Arturo Hale ,  Glen Robert Kowach ,  Sharad Ramanathan ,  Steven Herbert Simon ,  Paul Stephen Westbrook

IPC分类号： G02B634

CPC分类号： G02B6/021 ,  G02B6/02 ,  G02B6/0229 ,  G02B6/124 ,  G02B6/138 ,  G02B6/14 ,  G02B6/245 ,  G02B6/2932 ,  G02B6/29322 ,  G02B6/29394 ,  G02B2006/12107

摘要： In accordance with the invention, an optical waveguide comprising a longitudinally extending core housing an optical grating and a cladding layer peripherally surrounding the core, is provided with an outer surface of the cladding layer having one or more perturbations. Each perturbation has a height with respect to the core that varies by at least 0.1 times a Bragg wavelength of the grating over the surface of the perturbation and covers an extent of the outer surface whose linear dimensions are less than 1 cm. The perturbations suppress cladding mode spectra and reduce short wavelength cladding mode loss.

摘要翻译： 根据本发明，包括容纳光栅的纵向延伸的芯和围绕芯的外围包层的光波导设置有包层的外表面，其具有一个或多个扰动。 每个扰动具有相对于芯的高度，其在扰动表面上变化至少0.1倍的光栅的布拉格波长，并且覆盖其线性尺寸小于1cm的外表面的程度。 扰动抑制包层模式光谱并减少短波长包层模式损耗。

公开(公告)号：US06403511B2

公开(公告)日：2002-06-11

申请号：US09835570

申请日：2001-04-17

申请人： Debra Anne Fleming ,  David Wilfred Johnson ,  Glen Robert Kowach ,  Paul Joseph Lemaire

发明人： Debra Anne Fleming ,  David Wilfred Johnson ,  Glen Robert Kowach ,  Paul Joseph Lemaire

IPC分类号： C04B3548

CPC分类号： G02B6/0218 ,  C04B35/486 ,  C04B35/495

摘要： Ceramic monoliths are described which exhibit tunable coefficients of thermal expansion from about −5 to −11×10−6° C.−1 near ambient temperatures. These two-phase ceramics, which are fabricated, for example, by reactive sintering of WO3 and ZrO2, consists of a matrix of ZrW2O8 with inclusions of ZrO2 having diameters less than 10 &mgr;m. Additives may increase the density of the monoliths to greater than 98% of the calculated density. Green body densities, pre-sintered particle size distribution, sintering atmosphere, microstructure, and mechanical properties are discussed. These ceramics may be used as substrates for thermally compensating fiber Bragg gratings.

摘要翻译： 描述了陶瓷整料，其在环境温度附近表现出约-5至-11×10 -6℃-1的可调热膨胀系数。 这些由WO 3和ZrO 2的反应烧结制成的两相陶瓷由ZrW 2 O 8基体和直径小于10um的ZrO2夹杂物构成。 添加剂可将整料的密度提高到计算密度的98％以上。 讨论了绿体密度，预烧结粒度分布，烧结气氛，微观结构和力学性能。 这些陶瓷可以用作热补偿光纤布拉格光栅的基板。