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    • 31. 发明授权
    • Dispersion-controlled polymers for broadband fiber optic devices
    • 用于宽带光纤设备的分散控制聚合物
    • US06303695B1
    • 2001-10-16
    • US09692067
    • 2000-10-19
    • Kwok Pong ChanDavid G. GascoyneGregory A. Wagoner
    • Kwok Pong ChanDavid G. GascoyneGregory A. Wagoner
    • C08F800
    • C08F8/42C08F2800/20Y10T428/24124C08F220/22
    • Novel polymer compositions for controlling or correcting dispersion mismatch between the composition and a side-fiber polished optical fiber are disclosed. The polymer compositions contain an infrared absorbing dye having an absorption maximum from about 900 to about 1200 nm and and a polar olefin copolymer containing monomers which are formed from polar olefins having an ester, benzene, or halogen substitutent attached. A method for controlling the dispersion exhibited by the novel polymer compositions is also disclosed. The method includes forming the polymer composition over an exposed surface of an optical fiber. Dispersion is controlled by controlling the amount of dye present in the polymer composition. Also disclosed is an optical device from which improvements in the uniformity of spectral response and performance are observed across a wavelength band. The optical device includes the polymer composition formed over an optical fiber. Variable optical attenuators, switches, and couplers can be designed which incorporate the polymer compositions. The invention is particularly useful in the 1500-1600 nm wavelength band.
    • 公开了用于控制或校正组合物和侧纤纤维抛光光纤之间的分散失配的新型聚合物组合物。 聚合物组合物含有吸收最大约为900至约1200nm的红外线吸收染料,以及含有连接有酯,苯或卤素取代基的极性烯烃形成的单体的极性烯烃共聚物。 还公开了用于控制由新型聚合物组合物表现出的分散体的方法。 该方法包括在光纤的暴露表面上形成聚合物组合物。 通过控制聚合物组合物中存在的染料的量来控制分散。 还公开了一种光学装置,其中在波长带上观察到光谱响应和性能的均匀性的改善。 光学装置包括在光纤上形成的聚合物组合物。 可以设计可变光衰减器,开关和耦合器,其结合聚合物组合物。 本发明在1500-1600nm波长带中特别有用。
    • 33. 发明授权
    • Method for preparing high purity indane bisphenols
    • 制备高纯度茚满双酚的方法
    • US5994596A
    • 1999-11-30
    • US52546
    • 1998-03-31
    • Kwok Pong ChanPamela L. CristoPatrick M. McGrath, Jr.
    • Kwok Pong ChanPamela L. CristoPatrick M. McGrath, Jr.
    • C07C37/00C07C39/17C07C39/12
    • C07C37/11C07C37/84C07C2102/08
    • A process for preparing high purity indane bisphenols in high yield is disclosed. The method comprises heating a bisphenol in the presence of Montmorillonite K10 clay, which catalyzes the synthesis reaction more rapidly and effectively than other clays previously disclosed. The high purity (.gtoreq.97%) of the synthesized indane bisphenol is obtained by two successive selective recrystallizations, the first from an organic solvent, and the second from an acetic acid solution. The high purity indane bisphenols produced may be made substantially pure (>99%) by employing a purification process which includes at least one selective recrystallization from a 45%-80% by volume aqueous acetic acid solution. Alternatively, substantially pure indane bisphenol may be obtained by recrystallization from a solution of 89-93% by volume toluene and 7-11% by volume n-propanol, or by a combination of recrystallizations from toluene/n-propanol and from aqueous acetic acid. Substantially pure indane bisphenols, such as 5-hydroxy-3-(4-hydroxyphenyl)-1,1,3-trimethylindane, are suitable for conversion to high molecular weight polymers.
    • 公开了一种以高产率制备高纯度茚满双酚的方法。 该方法包括在蒙脱石K10粘土存在下加热双酚,其催化合成反应比先前公开的其它粘土更快速和有效地催化合成反应。 合成茚满双酚的高纯度(> / = 97%)是通过两次连续的选择性重结晶获得的,第一种是有机溶剂,第二种是由乙酸溶液获得。 通过使用包含45%-80%(体积)乙酸水溶液的至少一种选择性重结晶的纯化方法,所生产的高纯度茚满二酚可以制成基本上纯的(> 99%)。 或者,基本上纯的茚满双酚可以通过从89-93体积%甲苯和7-11体积%正丙醇的溶液中重结晶,或通过从甲苯/正丙醇和乙酸水溶液的重结晶 。 基本纯的茚满双酚,如5-羟基-3-(4-羟基苯基)-1,1,3-三甲基茚,适用于转化为高分子量聚合物。
    • 37. 发明授权
    • Dye-appended polymers for broadband fiber optic devices
    • 用于宽带光纤设备的染料附着聚合物
    • US06489399B1
    • 2002-12-03
    • US09628887
    • 2000-07-31
    • Kwok Pong ChanDavid G. GascoyneJanet L. KrahnGregory A. Wagoner
    • Kwok Pong ChanDavid G. GascoyneJanet L. KrahnGregory A. Wagoner
    • C08F800
    • G02F1/0118C08F8/42C08F2800/20C08F2810/40G02B6/266G02B6/2835G02F1/0147G02F2202/022Y10T428/24124C08F220/14
    • Novel dye/polymer compositions are disclosed, which when used in connection with fiber optic devices, provide a uniform spectral response across a broadband wavelength region. The dye/polymer compositions contain an infrared absorbing dye having an absorption maximum from about 900 to about 1300 nm. One or more polar olefin copolymers containing monomers derived from polar olefins having an ester, benzene, or halogen substitutent attached, is/are chemically bonded to the dye. Optionally, a detached polar olefin copolymer may be blended with the dye-appended copolymer. Also disclosed is a broadband optical device comprising the novel dye/polymer compositions formed over an optical fiber. Improvements in the uniformity of spectral response and performance are observed across a wavelength band. Variable optical attenuators, switches, shutters, and couplers can be designed which incorporate the dye/polymer compositions. The invention is particularly useful in the 1500-1700 nm wavelength band.
    • 公开了新的染料/聚合物组合物,其在与光纤器件结合使用时,在宽带波长区域提供均匀的光谱响应。 染料/聚合物组合物含有吸收最大约为900至约1300nm的红外吸收染料。 含有衍生自具有连接有酯,苯或卤素取代基的极性烯烃的单体的一种或多种极性烯烃共聚物与染料化学键合。 任选地,分离的极性烯烃共聚物可以与染料附着的共聚物共混。 还公开了一种宽带光学装置,其包括在光纤上形成的新型染料/聚合物组合物。 在波长带上观察到光谱响应和性能的均匀性的改善。 可以设计可变光衰减器,开关,百叶窗和耦合器,其结合染料/聚合物组合物。 本发明在1500-1700nm波长带中特别有用。
    • 38. 发明授权
    • Controllable fiber optic attenuators employing tapered and/or etched fiber sections
    • 采用锥形和/或蚀刻光纤段的可控光纤衰减器
    • US06466729B1
    • 2002-10-15
    • US09539469
    • 2000-03-30
    • Gregory A. WagonerKevin J. McCallionWalter JohnstoneKwok Pong ChanDavid G. Gascoyne
    • Gregory A. WagonerKevin J. McCallionWalter JohnstoneKwok Pong ChanDavid G. Gascoyne
    • G02B600
    • G02B6/2552G02B6/266G02B6/2835G02F1/0115G02F1/0147
    • Controllable fiber optic attenuators and attenuation systems are disclosed for controllably extracting optical energy from a fiber optic, and therefore attenuating the optical signal being transmitted through the fiber optic. A portion of the fiber optic is etched or tapered, thereby providing a side surface through which optical energy can be extracted. The portion of the fiber is suspended between two support points, and a controllable material is formed over the surface for controllably extracting optical energy according to a changeable stimulus applied thereto, which affects the refractive index thereof. In one embodiment, the changeable stimulus is temperature, and a controllable heating/cooling source can be provided in the attenuator for control of the attenuation. The limited amount of thermal contact between the suspended portion of the fiber optic and the controllable material to surrounding structures offers a more predictable response, and improved response time. The controllable material, in one embodiment, may be a dispersion controlled (e.g., matched) polymer, offering uniform spectral characteristics of attenuation across a wavelength band of interest.
    • 公开了可控光纤衰减器和衰减系统,用于可控地从光纤提取光能,并因此衰减通过光纤传输的光信号。 光纤的一部分被蚀刻或渐缩,从而提供可以提取光能的侧表面。 纤维的一部分悬挂在两个支撑点之间,并且在表面上形成可控材料,用于根据影响其折射率的可变刺激来可控地提取光能。 在一个实施例中,可变的刺激是温度,并且可以在衰减器中提供可控制的加热/冷却源以控制衰减。 光纤的悬挂部分和可控材料与周围结构之间的热接触的有限量提供了更可预测的响应,并且改善了响应时间。 在一个实施方案中,可控材料可以是分散体控制(例如,匹配的)聚合物,其在所关注的波长带上提供均匀的衰减光谱特性。