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公开(公告)号：US06424457B1
公开(公告)日：2002-07-23
申请号：US09729085
申请日：2000-12-05
IPC分类号： H04B1013
CPC分类号： H01S3/06754 , H01S3/10007 , H01S2301/04
摘要： Optical amplifiers and methods for manufacturing optical amplifiers are provided that allow amplifiers to be fabricated to match design expectations. Optical amplifiers may be manufactured by assembling passive optical components in the amplifier before assembling active optical components such as doped fiber coils. Passive losses may then be characterized and used to calculate the lengths of the fibers that should be used in the amplifier gain stages. Following corrections to the nominal doped-fiber lengths based on the measured passive losses, the passive and active components of the amplifier may be assembled and characterized. Final corrections may be made to the amplifier assembly based on these characterizations. For example, the lengths of one or more of the doped fibers may be adjusted. If desired, such length adjustments may be made to fiber coils in the mid-stage portion of the amplifier, so that the impact on the operating characteristics of the amplifier are minimized.
摘要翻译： 提供了用于制造光放大器的光放大器和方法，其允许制造放大器以匹配设计期望。 光放大器可以在组装诸如掺杂光纤线圈之类的有源光学部件之前在放大器中组装无源光学部件来制造。 然后可以对被动损耗进行表征，并用于计算应在放大器增益级中使用的光纤的长度。 基于所测量的被动损耗对标称掺杂光纤长度进行校正之后，可以组装和表征放大器的无源和有源部件。 可以基于这些特征对放大器组件进行最终校正。 例如，可以调节一个或多个掺杂光纤的长度。 如果需要，可以对放大器的中间部分中的光纤线圈进行这种长度调节，使得对放大器的工作特性的影响最小化。
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公开(公告)号：US08842963B2
公开(公告)日：2014-09-23
申请号：US13222577
申请日：2011-08-31
申请人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Ken Walker
发明人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Ken Walker
IPC分类号： G02B6/00
CPC分类号： G02B6/243
摘要： A method and structure for terminating an optical fiber are disclosed that provide an optical fiber termination structure with a small volume and very low return loss, even when the termination is in close proximity to reflective surfaces. In one example embodiment, the optical fiber termination reduces reflections into the one or more cores to a return loss of −70 dB or less regardless of the presence of surfaces proximate the optical fiber termination. At the same time, a length of the optical fiber termination is less than 5 mm and a largest transverse dimension of the optical fiber termination is less than 325 um. The optical fiber termination is useful in fiber sensing applications in general and is particularly effective for terminating a multi-core fiber used in a distributed shape sensing application.
摘要翻译： 公开了用于端接光纤的方法和结构，其提供具有小体积和非常低的回波损耗的光纤终端结构，即使当终端紧靠反射表面时。 在一个示例实施例中，光纤终端将反射到一个或多个核心中，使得接近光纤终端的表面的存在而减小到-70dB或更小的回波损耗。 同时，光纤终端的长度小于5mm，光纤终端的最大横向尺寸小于325μm。 光纤终端通常在光纤传感应用中是有用的，并且对于终止分布形状感测应用中使用的多芯光纤是特别有效的。
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公开(公告)号：US08744224B2
公开(公告)日：2014-06-03
申请号：US11369364
申请日：2006-03-07
申请人： Paul F. Wysocki
发明人： Paul F. Wysocki
CPC分类号： G02B6/04 , H01S3/06745 , H01S3/06754 , H01S3/094007
摘要： Systems and methods for monitoring signals in an optical fiber amplifier system are provided. The optical amplifier system includes a tapered fiber bundle which couples optical energy into the cladding of an optical amplifier. A signal passing through the optical amplifier is amplified. To monitor the amplified signal, a single fiber of a tapered fiber bundle may be used as a monitor fiber. Alternatively, a monitor or coupler may be integrated into the tapered fiber bundle during manufacturing. The systems and methods disclosed allow for monitoring the amplified signal without increasing the length of the amplified signal's path, thus minimizing the introduction of additional non-linearities.
摘要翻译： 提供了用于监测光纤放大器系统中的信号的系统和方法。 光放大器系统包括将光能耦合到光放大器的包层中的锥形光纤束。 通过光放大器的信号被放大。 为了监控放大的信号，可以使用锥形纤维束的单根纤维作为监视光纤。 或者，在制造期间，监视器或耦合器可以集成到锥形光纤束中。 所公开的系统和方法允许监视放大的信号而不增加放大信号路径的长度，从而最小化额外的非线性的引入。
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4.发明申请Registration of an extended reference for parameter measurement in an optical sensing system 有权在光学传感系统中注册参数测量的扩展参考公开(公告)号：US20120057841A1
公开(公告)日：2012-03-08
申请号：US13222577
申请日：2011-08-31
申请人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Kenneth Walker
发明人： Paul F. Wysocki , Alan Heaney , Stephen Kreger , Mark Froggatt , Kenneth Walker
CPC分类号： G02B6/243
摘要： A method and structure for terminating an optical fiber are disclosed that provide an optical fiber termination structure with a small volume and very low return loss, even when the termination is in close proximity to reflective surfaces. In one example embodiment, the optical fiber termination reduces reflections into the one or more cores to a return loss of −70 dB or less regardless of the presence of surfaces proximate the optical fiber termination. At the same time, a length of the optical fiber termination is less than 5 mm and a largest transverse dimension of the optical fiber termination is less than 325 um. The optical fiber termination is useful in fiber sensing applications in general and is particularly effective for terminating a multi-core fiber used in a distributed shape sensing application.
摘要翻译： 公开了用于端接光纤的方法和结构，其提供具有小体积和非常低的回波损耗的光纤终端结构，即使当终端紧靠反射表面时。 在一个示例实施例中，光纤终端将反射到一个或多个核心中，使得接近光纤终端的表面的存在而减小到-70dB或更小的回波损耗。 同时，光纤终端的长度小于5mm，光纤终端的最大横向尺寸小于325μm。 光纤终端通常在光纤传感应用中是有用的，并且对于终止分布形状感测应用中使用的多芯光纤是特别有效的。
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公开(公告)号：US5189676A
公开(公告)日：1993-02-23
申请号：US403703
申请日：1989-09-06
IPC分类号： H01S3/067
CPC分类号： H01S3/06795
摘要： A laser source comprises an optical fiber doped with a homogeneously broadened lasing medium, preferably with Erbium, pumped by a laser pump source and an intracavity acousto-optic modulator. When the acousto-optic modulator is driven by a variable frequency source, the Erbium fluorescence line emitted by the Erbium-doped optical fiber can be electronically tuned. In another embodiment, an electronic sweep waveform is used to frequency modulate the acoustic signal produced by the acousto-optic modulator. Without the low-rate frequency modulation, Erbium in a silica optical fiber is a mostly homogeneously broadened gain medium with a narrow laser linewidth. When measured on a long time scale, low-rate frequency modulation provides a broader spectral width, on the order of 19 nm, which makes such a source on an ideal source for certain optical applications such as fiber optic gyroscopes.
摘要翻译： 激光源包括掺杂有均匀扩展的激光介质的光纤，优选地由铒掺杂，由激光泵浦源和腔内声光调制器泵浦。 当声光调制器由可变频率源驱动时，掺铒光纤发射的铒荧光线可以被电子调谐。 在另一个实施例中，使用电子扫描波形来对由声光调制器产生的声信号进行频率调制。 在没有低速率频率调制的情况下，二氧化硅光纤中的铒是激光线宽窄的大部分均匀的增宽介质。 当在长时间尺度上测量时，低速率频率调制提供了更宽的光谱宽度，大约为19nm，这使得这样的光源成为诸如光纤陀螺仪之类的某些光学应用的理想光源。
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公开(公告)号：US20180245460A1
公开(公告)日：2018-08-30
申请号：US15961410
申请日：2018-04-24
申请人： Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
发明人： Ajit Balagopal , Juan P. Franco , Paul F. Wysocki
CPC分类号： E21B47/123 , G02B6/4413 , G02B6/4415 , G02B6/4435
摘要： An embodiment of a method of manufacturing a fiber optic cable includes selecting a cable support structure configured to support an optical fiber sensor, adhering the optical fiber sensor to the cable support structure by applying a temporary adhesive, and installing a protective layer around the cable support structure and the temporarily adhered optical fiber sensor. The method further includes removing a bond between the optical fiber sensor and the temporary adhesive, wherein removing the bond includes injecting a debonding material into a space formed between the cable support structure and the protective layer, and injecting a permanent adhesive into the space, the permanent adhesive configured to immobilize the optical fiber sensor relative to the protective layer and allow strain to be transferred from the protective layer to the optical fiber sensor.
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7.发明授权公开(公告)号：US09683902B2
公开(公告)日：2017-06-20
申请号：US13744044
申请日：2013-01-17
CPC分类号： G01K11/32 , G01K5/48 , Y10T29/49826
摘要： A temperature sensing arrangement includes a member having a first coefficient of thermal expansion, and an optical fiber having a second coefficient of thermal expansion. The optical fiber is strain transmissively mounted to the member. And the first coefficient of thermal expansion is greater than the second coefficient of thermal expansion such that strain measurable in the optical fiber is correlatable to temperature changes in the member.
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公开(公告)号：US09109969B2
公开(公告)日：2015-08-18
申请号：US14126536
申请日：2012-06-12
CPC分类号： G01L1/242 , G01B11/16 , G01B11/18 , G02B6/02042 , G02B6/022 , G02B6/02285 , G02B6/4403 , G02B6/4405 , G02B6/441 , G02B6/4413 , G02B6/4427
摘要： A twisted, multicore fiber communicates light input to each core to an output. The twisting mitigates relative time delays of the input light traveling through each of the cores in the multicore fiber to the output caused by bending of that multicore fiber. An example application is in an optical network that includes an optical input terminal and an optical sensor connected by a twisted multicore connecting fiber. One example of twisted multicore optical fiber is helically-wrapped, multicore fiber.
摘要翻译： 扭转的多芯光纤将每个核心的光输入连接到输出。 扭转减轻了穿过多芯光纤中的每个芯的输入光的相对时间延迟到由该多芯光纤的弯曲引起的输出。 示例应用在光网络中，其包括光输入端子和通过扭绞多芯连接光纤连接的光学传感器。 扭转多芯光纤的一个例子是螺旋缠绕的多芯光纤。
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公开(公告)号：US07724423B2
公开(公告)日：2010-05-25
申请号：US11377089
申请日：2006-03-16
CPC分类号： H01S3/06754 , H01S3/0064 , H01S3/06758 , H01S3/094007 , H01S3/094011 , H01S3/10015 , H01S3/1608 , H01S3/1618 , H01S2301/02
摘要： A method and apparatus for improved efficiency in optical fiber lasers. The system increases the efficiency of cladding pumped optical fiber amplifiers through a seeding technique which includes pumping an erbium/ytterbium doped fiber amplifier with pump energy, directing an optical signal through the erbium/ytterbium doped fiber amplifier, and seeding the optical signal with seed energy. The seed energy may have a higher energy level than the optical signal and a lower energy level than the pump energy, and the seed energy may be initially amplified in the amplifier and subsequently attenuated while amplifying the optical signal in the amplifier.
摘要翻译： 一种提高光纤激光器效率的方法和装置。 该系统通过种子技术提高了包层泵浦光纤放大器的效率，包括用掺杂铒/镱掺杂的光纤放大器泵浦能量，引导光信号通过铒/镱掺杂光纤放大器，并将光信号与种子能量 。 种子能量可以具有比光学信号更高的能量水平和比泵浦能量更低的能量水平，并且种子能量可以在放大器中被初始地放大，并且随后在放大器中放大光学信号的同时被衰减。
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公开(公告)号：US06882664B2
公开(公告)日：2005-04-19
申请号：US10084908
申请日：2002-02-28
CPC分类号： H01S3/094003 , H01S3/094007 , H01S3/094019 , H01S3/094069
摘要： Methods and apparatus for coupling of pump light inside a laser cavity of a fiber laser. The optical elements of the cladding pumped laser are configured such that the pump laser is coupled within the laser cavity. An optical fiber laser includes a laser cavity comprising a lasing medium and first and second reflector devices, a pump source, and a combiner. The combiner has a first side, a second side and an input port that may be associated with one of the first and second sides. An output of the pump source is operatively coupled to the input port of the combiner, and the combiner is coupled at its first and second sides within the laser cavity.
摘要翻译： 在光纤激光器的激光腔内耦合泵浦光的方法和装置。 包层泵浦激光器的光学元件被配置为使得激光器在激光腔内耦合。 光纤激光器包括激光腔，其包括激光介质和第一和第二反射器装置，泵浦源和组合器。 组合器具有可以与第一和第二侧中的一个相关联的第一侧，第二侧和输入端口。 泵浦源的输出可操作地耦合到组合器的输入端口，并且组合器在其激光腔内的第一和第二侧耦合。
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