Low loss optical fiber designs and methods for their manufacture
    1.
    发明授权
    Low loss optical fiber designs and methods for their manufacture 有权
    低损耗光纤设计及其制造方法

    公开(公告)号:US08295668B2

    公开(公告)日:2012-10-23

    申请号:US13317073

    申请日:2011-10-07

    IPC分类号: G02B6/036

    摘要: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    摘要翻译: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯,并且内包层具有凹陷指数,并且使用MCVD制造。 在优选实施例中,光功率包层基本上完全包含在VAD生产的芯材料中,并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。

    Low loss optical fiber designs and methods for their manufacture
    2.
    发明申请
    Low loss optical fiber designs and methods for their manufacture 有权
    低损耗光纤设计及其制造方法

    公开(公告)号:US20090232463A1

    公开(公告)日:2009-09-17

    申请号:US12381302

    申请日:2009-03-10

    IPC分类号: G02B6/036

    摘要: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    摘要翻译: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯,并且内包层具有凹陷指数,并且使用MCVD制造。 在优选实施例中,光功率包层基本上完全包含在VAD生产的芯材料中,并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。

    Multiband and multimode transmitter and method
    3.
    发明授权
    Multiband and multimode transmitter and method 有权
    多频段和多模发射机和方法

    公开(公告)号:US07209720B2

    公开(公告)日:2007-04-24

    申请号:US10648468

    申请日:2003-08-26

    IPC分类号: H04B1/02

    CPC分类号: H04B1/406

    摘要: A multiband and multimode transmitter circuit (200) includes two separate oscillators, such as at least a first oscillator circuit (60), a second oscillator circuit (62), a corresponding first signal processing circuit (64), and second signal processing circuit (66) to produce a first output frequency signal (78) defined within the first or second band of frequencies in response to a transmitter input signal (46). Each oscillator and corresponding signal processing circuit (64, 66) may be optimized for the lowest power consumption while meeting the noise performance criteria in each of the multiple frequency bands. The multiband and multimode transmitter circuit (200) may produce the transmitter output signal (36) with either linear modulation or nonlinear modulation and at a first band or second band frequencies.

    摘要翻译: 多频和多模发射机电路(200)包括两个单独的振荡器,例如至少第一振荡器电路(60),第二振荡器电路(62),对应的第一信号处理电路(64)和第二信号处理电路 66)以响应于发射机输入信号(46)产生在所述第一或第二频带内限定的第一输出频率信号(78)。 每个振荡器和对应的信号处理电路(64,66)可以针对最低功耗而被优化,同时满足多个频带中的每个频带中的噪声性能标准。 多频带和多模发射机电路(200)可以以线性调制或非线性调制产生发射机输出信号(36),并且可以在第一频带或第二频带频率产生。

    Manufacture of depressed index optical fibers
    4.
    发明申请
    Manufacture of depressed index optical fibers 审中-公开
    凹陷指数光纤的制造

    公开(公告)号:US20080260339A1

    公开(公告)日:2008-10-23

    申请号:US12148891

    申请日:2008-04-23

    IPC分类号: G02B6/036 C03B37/018

    摘要: Described herein is a method for making a depressed index cladding for the inner cladding of an optical fiber. The method involves making the depressed index cladding in two steps. The innermost portion of the inner cladding is produced using a soot method, thereby deriving the advantages of the soot method for the region of the cladding that carries the most optical power, then forming the remaining portion of the inner cladding layer using a rod-in-tube step. This method effectively marries the advantages and disadvantages of both methods.

    摘要翻译: 这里描述了一种用于制造用于光纤的内包层的凹陷折射率包层的方法。 该方法包括使凹陷的折射率包层分两步进行。 使用烟灰法制造内包层的最内部,从而得到具有最大光焦度的包层的区域的烟灰法的优点,然后使用棒入法形成内包层的剩余部分 立方步。 这种方法有效地结合了两种方法的优缺点。

    Riveting apparatus
    5.
    发明授权
    Riveting apparatus 有权
    铆接设备

    公开(公告)号:US07200909B2

    公开(公告)日:2007-04-10

    申请号:US10482261

    申请日:2002-06-26

    IPC分类号: B23P11/00 B27C3/06

    摘要: A riveting yoke assembly (11) comprises a yoke (30), a force applying mechanism (22) and a rivet forming device (34,36). The yoke has a first end (38), a second end (40), and a middle section (42) coupled between the first and second ends (38,40). An opening (44) is formed through the yoke between the first and second ends. The force applying mechanism (22) is coupled to the first end (38) of the yoke (30). The lower rivet forming device (36) is removably coupled to the second end (40) of the yoke. The lower rivet forming device (36) has a base end (46) attached to the second end (40) of the yoke (30) and a forming end (48) with a recess (50) to form rivets (17). The recess (50) has a concave, interior surface (52) having an annular step (54) positioned between a top edge (56) of the interior surface (52) and a bottom-most point (58) of the interior surface (52) in order to properly align the rivet (17).

    摘要翻译: 铆接轭组件(11)包括轭(30),施力机构(22)和铆钉形成装置(34,36)。 轭具有连接在第一和第二端(38,40)之间的第一端(38),第二端(40)和中间段(42)。 在第一和第二端之间通过轭形成开口(44)。 力施加机构(22)联接到轭架(30)的第一端(38)。 下铆钉形成装置(36)可拆卸地联接到轭的第二端(40)。 下铆钉形成装置(36)具有附接到轭(30)的第二端(40)的基端(46)和具有凹部(50)以形成铆钉(17)的成形端(48)。 凹部(50)具有凹入的内表面(52),其具有位于内表面(52)的顶部边缘(56)和内表面的最底点(58)之间的环形台阶(54) 52),以便正确对准铆钉(17)。

    Low loss optical fiber designs for confining optical power to low-doped regions
    6.
    发明授权
    Low loss optical fiber designs for confining optical power to low-doped regions 有权
    低损耗光纤设计用于将光功率限制在低掺杂区域

    公开(公告)号:US08315493B2

    公开(公告)日:2012-11-20

    申请号:US13317476

    申请日:2011-10-19

    IPC分类号: G02B6/036

    摘要: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

    摘要翻译: 本说明书描述了通过混合VAD / MCVD工艺生产的改进的光纤。 使用VAD制造纤维的芯,并且内包层具有凹陷指数,并且使用MCVD制造。 在优选实施例中,光功率包层基本上完全包含在VAD生产的芯材料中,并且MCVD产生凹陷的折射率包层材料。 通过将大部分光功率限制在其中OH存在低的VAD核心以及通过使未掺杂二氧化硅区域中的光功率最大化来将光损耗最小化。 MCVD衬底管材料基本上没有光学功率。

    Method and apparatus for protecting RF power amplifiers
    7.
    发明申请
    Method and apparatus for protecting RF power amplifiers 有权
    用于保护RF功率放大器的方法和装置

    公开(公告)号:US20070052481A1

    公开(公告)日:2007-03-08

    申请号:US11222545

    申请日:2005-09-08

    IPC分类号: H03F1/52

    CPC分类号: H03F3/189 H03F1/52

    摘要: Method and apparatus are provided for protecting radio frequency (RF) power amplifiers. A circuit (10) is provided for limiting a supply current to a first stage (Q3) of the RF power amplifier having a second stage (Q2) coupled to the first stage. The circuit comprises a comparator (14) having first and second inputs and an output, and a switching circuit (12, 20, 22, 24) having an input coupled to the output of the comparator (14) and having an output configured to couple to the first stage (Q3). The first input of the comparator (14) is configured to receive the supply current, and the second input is configured to receive a current supplied to the second stage (Q2). The comparator (14) is configured to compare a ratio of the supply current to the first stage to the current supplied to the second stage (Q2) with a predetermined value. The switching circuit (12, 20, 22, 24) is configured to limit the supply current to the first stage (Q3) when the ratio exceeds the predetermined value.

    摘要翻译: 提供了用于保护射频(RF)功率放大器的方法和装置。 提供电路(10)用于限制具有耦合到第一级的第二级(Q 2)的RF功率放大器的第一级(Q 3)的电源电流。 该电路包括具有第一和第二输入和一个输出的比较器(14)和一个具有耦合到比较器(14)的输出的输入的开关电路(12,20,22,24),并且具有被配置为耦合的输出 到第一阶段(问3)。 比较器(14)的第一输入被配置为接收电源电流,并且第二输入被配置为接收提供给第二级(Q 2)的电流。 比较器(14)被配置为将供应电流与第一级的比率与以第一级提供给第二级(Q 2)的电流进行比较。 开关电路(12,20,22,24)被配置为当该比率超过预定值时将供电电流限制到第一级(Q 3)。

    Configurable multi-mode modulation system and transmitter
    8.
    发明申请
    Configurable multi-mode modulation system and transmitter 有权
    可配置多模调制系统和发射机

    公开(公告)号:US20070037530A1

    公开(公告)日:2007-02-15

    申请号:US11199737

    申请日:2005-08-09

    IPC分类号: H04B1/02 H04B1/66

    摘要: A multi-mode transmitter architecture is configurable for multiple modulation modes using either polar or polar-lite modulation. Multiplexed signal paths and reconfigurable components are controlled for performance in GMSK and EDGE burst modes. Polar-lite EDGE modulation is programmed by setting a multiplexer coupling a first amplitude modulated signal path with a frequency modulated signal path input to a dual-mode power amplifier for amplification of the combined EDGE transmission signal. In full-polar EDGE modulation, amplitude modulated signal is multiplexed into a second amplitude modulated signal path for A/D conversion and comparison with a polar feedback signal coupled from the power amplifier output. The resulting comparison is applied to a power control port of the power amplifier to amplitude modulate the EDGE transmission output. Multiplexers are configured to disconnect the amplitude modulated paths when operating in GMSK signaling for both full-polar and polar-lite modulation. Multiplexers selectively couple power feedback into the second amplitude modulated signal path to provide power control and output power ramping for burst transmissions.

    摘要翻译: 多模式发射机架构可以使用极性或极性微调制来配置多种调制模式。 控制多路复用信号路径和可重构组件,以实现GMSK和EDGE突发模式的性能。 通过设置将第一幅度调制信号路径与输入到双模功率放大器的频率调制信号路径耦合的多路复用器来编程极性EDGE调制,以放大组合EDGE传输信号。 在全极性EDGE调制中,幅度调制信号被多路复用到第二幅度调制信号路径用于A / D转换,并与从功率放大器输出耦合的极性反馈信号进行比较。 所得到的比较被应用于功率放大器的功率控制端口以幅度调制EDGE传输输出。 多路复用器被配置为在GMSK信号中进行全极性和极坐标调制时断开幅度调制路径。 多路复用器将功率反馈选择性地耦合到第二幅度调制信号路径中,以提供突发传输的功率控制和输出功率斜坡。

    System and method for improved content delivery

    公开(公告)号:US20060167940A1

    公开(公告)日:2006-07-27

    申请号:US11042532

    申请日:2005-01-24

    IPC分类号: G06F17/00

    摘要: A system and method for sharing content among a plurality of users, enables the transfer of electronic content items captured by any of a variety of electronic content devices. The content item can include multiple levels of encoding to facilitate efficient transfer across a communication medium. The content item can be decoded at a recipient device to allow playback, display or other utilization of the content item. Content-specific encoding can be applied to enhance the transportability of the content. A content sharing application can be provided to facilitate content transfer in a computing environment, and can be implemented so as to provide an e-mail like user interface.