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    Magnetically reconfigurable optical grating devices and communication systems
    11.
    发明授权
    Magnetically reconfigurable optical grating devices and communication systems 失效
    磁可重构光栅设备和通信系统

    公开(公告)号：US6141470A

    公开(公告)日：2000-10-31

    申请号：US20206

    申请日：1998-02-06

    申请人： Rolando Patricio Espindola ,  Sungho Jin ,  Hareesh Mavoori ,  Thomas Henry Tiefel, deceased

    发明人： Rolando Patricio Espindola ,  Sungho Jin ,  Hareesh Mavoori ,  Thomas Henry Tiefel, deceased

    IPC分类号： G02B6/34 ,  G02F1/01 ,  H04J14/02

    CPC分类号： G02B6/2932 ,  G02B6/022 ,  G02B6/29322 ,  G02B6/29383 ,  G02B6/29395 ,  G02F1/011 ,  G02F1/0134 ,  G02F2201/307 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0219

    摘要： The invention is a reconfigurable optical grating device using force from programmable magnets to alter the mechanical strain, preferably a tensile strain, on the gratings so as to induce a latchable change in grating periodicity using a pulse or short-duration current. It includes apparatus for limiting the maximum strain applied to the grating so that the fiber does not fracture, and it provides strain without rotation or twisting of the fiber grating. In preferred embodiment it provides control of magnetic force so as to accurately obtain a predetermined amount of strain and hence wavelength shift in the grating with a minimal amount of electrical power. The inventive structure is useful, e.g. for wavelength division multiplexed optical communication system comprising wavelength channel add/drop devices and/or dynamically gain-equalized amplifiers.

    摘要翻译： 本发明是使用来自可编程磁体的力改变光栅上的机械应变（优选拉伸应变）的可重构光栅装置，以便使用脉冲或短持续时间电流来引起光栅周期性的可锁定变化。 它包括用于限制施加到光栅的最大应变的装置，使得光纤不断裂，并且其提供应变而不会旋转或扭曲光纤光栅。 在优选实施例中，它提供磁力的控制，以便以最小的电功率精确地获得光栅中的预定量的应变和因此波长偏移。 本发明的结构是有用的，例如 用于包括波长信道分插装置和/或动态增益均衡放大器的波分复用光通信系统。

    Magnetostrictive wavelength-shifting devices and optical communication systems comprising same
    12.
    发明授权
    Magnetostrictive wavelength-shifting devices and optical communication systems comprising same 有权
    磁致伸缩波长移位装置和包括它们的光通信系统

    公开(公告)号：US6122421A

    公开(公告)日：2000-09-19

    申请号：US159907

    申请日：1998-09-24

    申请人： Laura Ellen Adams ,  Rolando Patricio Espindola ,  Sungho Jin ,  Hareesh Mavoori ,  Thomas Andrew Strasser

    发明人： Laura Ellen Adams ,  Rolando Patricio Espindola ,  Sungho Jin ,  Hareesh Mavoori ,  Thomas Andrew Strasser

    IPC分类号： G02B26/00 ,  G02B6/34 ,  G02F1/01 ,  H01S3/30 ,  H04J14/02

    CPC分类号： G02B6/022 ,  G02F1/0134 ,  G02F2201/307

    摘要： A programmable and latchable device for wavelength shifting and chromatic dispersion compensating is disclosed. An optical grating such as a Bragg grating, a nonchirped grating, or a linearly or non-linearly chirped grating, is magnetostrictively strained to alter the dispersion compensator characteristics. In a preferred embodiment, a gradient magnetostrictive body is bonded along its length to the fiber grating. In yet another preferred embodiment, a magnetostrictive body is bonded onto the length of the fiber grating, and a gradient generating, programmable and latchable magnet component is placed adjacent the magnetostrictive body. The body is then latchably strained to a desired level by controlling the extent of magnetization in the magnetostrictive material and the magnet so as to induce or enhance chirping characteristics in the grating. Various optical applications using such are disclosed.

    摘要翻译： 公开了一种用于波长偏移和色散补偿的可编程和可锁定装置。 诸如布拉格光栅，非激光光栅或线性或非线性啁啾光栅的光栅被磁致伸缩应变以改变色散补偿器特性。 在优选实施例中，梯度磁致伸缩体沿着其长度被结合到光纤光栅。 在另一优选实施例中，将磁致伸缩体接合到光纤光栅的长度上，并且将梯度产生可编程和可锁定的磁体部件放置在与磁致伸缩体相邻的位置。 然后，通过控制磁致伸缩材料和磁体中的磁化程度，使主体可锁定地变形到所需的水平，以便引起或增强光栅中的啁啾特性。 公开了使用这些的各种光学应用。

    Article comprising a broadband optical fiber amplifier
    14.
    发明授权
    Article comprising a broadband optical fiber amplifier 失效
    文章包括宽带光纤放大器

    公开(公告)号：US5920424A

    公开(公告)日：1999-07-06

    申请号：US48729

    申请日：1998-03-26

    申请人： Rolando Patricio Espindola ,  Paul Francis Wysocki

    发明人： Rolando Patricio Espindola ,  Paul Francis Wysocki

    IPC分类号： H01S3/067 ,  H01S3/16 ,  G02B6/26 ,  H01S3/06

    CPC分类号： H01S3/06758 ,  H01S2301/04 ,  H01S3/1608

    摘要： We have found that it is possible to make a multistage optical fiber amplifier having a substantially flat gain band of spectral width of 40 nm or more, excellent noise figure (e.g.,

    摘要翻译： 我们已经发现，可以制造具有40nm或更大的光谱宽度的基本上平坦的增益带的多级光纤放大器，优异的噪声系数（例如，<4dB）和输出功率。 这样的放大器可以有利地用于例如多通道WDM系统和模拟CATV系统中。 放大器的一个重要方面是提供光损耗元件（例如，多光栅光纤滤波器），其至少在增益带中的一个波长处提供超过+ E，ovs G + EE / 3 dB，其中+ E，ovs G + EE是增益带中的平均放大器增益（以dB为单位）。 放大器的另一个重要方面是使用相对较长的放大器光纤，这有助于实现高输出功率和低噪声系数。 示例性地，放大器是包括基于二氧化硅的掺铒放大器光纤的2级放大器，在级之间具有三高斯滤波器。 作为进一步的示例，放大器具有3个或更多个级，其中选择损耗元件使得绝对值的损耗大于+ E，ovs G + EE，并且放大器的增益带宽为80nm或 更多。

    Magnetically tunable laser with wavelength latchability and optical communication system comprising such laser
    17.
    发明授权
    Magnetically tunable laser with wavelength latchability and optical communication system comprising such laser 有权
    具有波长可锁定性的磁性可调激光器和包括这种激光器的光通信系统

    公开(公告)号：US5999546A

    公开(公告)日：1999-12-07

    申请号：US158672

    申请日：1998-09-22

    申请人： Rolando Patricio Espindola ,  Sungho Jin ,  Hareesh Mavoori

    发明人： Rolando Patricio Espindola ,  Sungho Jin ,  Hareesh Mavoori

    IPC分类号： H01S3/063 ,  H01S3/067 ,  H01S3/1055 ,  H01S5/06 ,  H01S5/14 ,  H01S3/10

    CPC分类号： H01S3/1055 ,  G02B6/022 ,  H01S3/0675 ,  H01S3/063 ,  H01S5/0607 ,  H01S5/146

    摘要： In accordance with the invention, a tunable laser uses magnets to apply mechanical strain on fiber Bragg grating reflectors or laser cavities in order to induce a change in lasing wavelength. The strain can be tensile or compressive. The tunable laser comprises a laser cavity including a laser material for emitting light in response to stimulating light and two end reflectors one or more of which can be a Bragg grating. In preferred embodiments, latchable programmable magnets vary the grating periodicity and/or cavity length in a controlled, accurate manner so as to achieve desired tuning of the laser over a broad range of wavelengths. The latchable magnets hold the wavelength in the shifted position without the need for sustained power.

    摘要翻译： 根据本发明，可调激光器使用磁体在光纤布拉格光栅反射器或激光腔上施加机械应变，以引起激光波长的变化。 该应变可以是拉伸或压缩。 可调谐激光器包括激光腔，其包括用于响应于刺激光发射光的激光材料和两个端部反射器，其中一个或多个可以是布拉格光栅。 在优选实施例中，可锁定可编程磁体以受控的，精确的方式改变光栅周期和/或腔长度，以便在宽的波长范围内实现对激光器的期望的调谐。 可锁定磁体将波长保持在移动位置，而不需要持续的功率。

    Method for producing photo induced grating devices by UV irradiation of heat-activated hydrogenated glass
    18.
    发明授权
    Method for producing photo induced grating devices by UV irradiation of heat-activated hydrogenated glass 失效
    通过热激活氢化玻璃的紫外线照射产生光诱导光栅器件的方法

    公开(公告)号：US5930420A

    公开(公告)日：1999-07-27

    申请号：US912261

    申请日：1997-08-15

    申请人： Robert Michael Atkins ,  Rolando Patricio Espindola

    发明人： Robert Michael Atkins ,  Rolando Patricio Espindola

    IPC分类号： G02B6/34

    CPC分类号： G02B6/02138 ,  G02B6/02114

    摘要： In accordance with the invention, the index of refraction of a region of a glass body is selectively increased by treating the glass with hydrogen or deuterium, heating the hydrogenated glass to a temperature in excess of 500.degree. C., permitting the glass to rapidly cool below 100.degree. C. and exposing the region to UV radiation, preferably in the range 300 nm to 400 nm. The result is an increase in the refractive index of the irradiated region. Absorption is via a GODC band at 330 nm believed to result from a singlet to triplet transition. This band is about 1000 times weaker than the commonly used band at 240 nm. This process can be used to make and adjust a variety of optical waveguide devices such as photoinduced Bragg gratings and long period gratings.

    摘要翻译： 根据本发明，通过用氢或氘处理玻璃来选择性地增加玻璃体区域的折射率，将氢化玻璃加热至超过500℃的温度，允许玻璃快速冷却 低于100℃，并将该区域暴露于UV辐射，优选在300nm至400nm的范围内。 结果是照射区域的折射率增加。 吸收是通过330nm处的GODC谱带被认为是由单峰态到三重态跃迁的。 该频带比240nm的常用频带弱约1000倍。 该过程可用于制造和调整各种光波导器件，例如光导布拉格光栅和长周期光栅。

    Magnetically tunable optical attenuator and method of attenuating signals
    19.
    发明授权
    Magnetically tunable optical attenuator and method of attenuating signals 有权
    磁调谐光衰减器和衰减信号的方法

    公开(公告)号：US06301425B1

    公开(公告)日：2001-10-09

    申请号：US09255299

    申请日：1999-02-22

    申请人： Rolando Patricio Espindola ,  Randy Clinton Giles ,  Sungho Jin ,  Hareesh Mavoori

    发明人： Rolando Patricio Espindola ,  Randy Clinton Giles ,  Sungho Jin ,  Hareesh Mavoori

    IPC分类号： G02B600

    CPC分类号： G02B6/353 ,  G02B6/266 ,  G02B6/3532 ,  G02B6/3572 ,  G02B6/358 ,  G02B6/3594

    摘要： A variable attenuator device is disclosed that may be magnetically and latchably controlled such that it does not require a continuous power supply to maintain a particular loss level. The variable attenuator comprises two optical components disposed in spaced apart relation to define a gap between them and a magnetic shutter positioned within the gap. The shutter is movable, due to its magnetic properties, from a first position to at least a second position, where the second position may be within, partially within, or outside of the gap. A mechanism is provided for magnetizing or actuating the shutter to cause it to move from the first position to the at least second position. When the shutter is in the first position, it causes a certain amount of attenuation in the signal being transmitted between the two optical components, and when it moves to the at least second position, a different amount of attenuation is caused, such that movement of the shutter causes a variation in the attenuation. With this attenuator, the variation in attenuation may be achieved via coupling loss while the optical components (e.g., mating fibers), are maintained in a fixed position, thereby avoiding difficulties associated with fiber movement.

    摘要翻译： 公开了一种可变的衰减器装置，其可被磁性和可锁定地控制，使得其不需要连续的电源来维持特定的损耗水平。 可变衰减器包括以间隔开的关系设置的两个光学部件，以限定它们之间的间隙和位于间隙内的磁性快门。 快门由于其磁性，可以从第一位置移动到至少第二位置，其中第二位置可以在间隙的内部，部分地在外部或外部。 提供了用于磁化或致动快门以使其从第一位置移动到至少第二位置的机构。 当快门处于第一位置时，其在两个光学部件之间的信号中产生一定量的衰减，并且当其移动到至少第二位置时，引起不同的衰减量， 快门会导致衰减的变化。 利用该衰减器，可以通过耦合损耗来实现衰减的变化，同时光学部件（例如，配合光纤）保持在固定位置，从而避免与光纤移动有关的困难。