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    Article comprising means for optical pulse reshaping
    21.
    发明授权
    Article comprising means for optical pulse reshaping 失效
    文章包括用于光脉冲整形的装置

    公开(公告)号：US06201916B1

    公开(公告)日：2001-03-13

    申请号：US09268285

    申请日：1999-03-15

    Applicant: Benjamin John Eggleton ,  Gadi Lenz ,  Richart Elliott Slusher ,  Stefan Heinz Spalter

    Inventor： Benjamin John Eggleton ,  Gadi Lenz ,  Richart Elliott Slusher ,  Stefan Heinz Spalter

    IPC: G02B6293

    CPC classification number: H04B10/25077 ,  H04B2210/258

    Abstract: In an optical fiber communication system a pulse reshaper can transform a distorted input light pulse into a reshaped output light pulse. The disclosed pulse reshaper is an all-optical pulse reshaper that comprises an optical waveguide having an effective length, the waveguide connecting the input and the output and comprising optical non-linear material, with a periodic variation of an effective refractive index of the optical waveguide. The optically non-linear material and the periodic variation are selected such that the reshaped output light pulse is a substantially transform-limited output light pulse.

    Abstract translation: 在光纤通信系统中，脉冲整形器可以将失真的输入光脉冲变换成重新形成的输出光脉冲。 所公开的脉冲整形器是全光脉冲整形器，其包括具有有效长度的光波导，波导连接输入和输出并且包括光学非线性材料，光波导的有效折射率的周期性变化 。 选择光学非线性材料和周期性变化，使得重新整形的输出光脉冲是基本上变换限制的输出光脉冲。

    Article comprising an optical pulse compressor
    23.
    发明授权
    Article comprising an optical pulse compressor 有权
    一种光脉冲压缩机

    公开(公告)号：US06163638A

    公开(公告)日：2000-12-19

    申请号：US181728

    申请日：1998-10-29

    Applicant: Benjamin John Eggleton ,  Gadi Lenz

    Inventor： Benjamin John Eggleton ,  Gadi Lenz

    IPC: G02F1/35 ,  G02B6/34 ,  H04B10/18

    CPC classification number: G02B6/02085 ,  G02B6/29322 ,  H04B10/25077

    Abstract: Optical pulse compression is of importance in very high bit rate optical fiber communication systems. We are disclosing an adiabatic optical pulse compressor that can achieve substantial compression by means of a relatively short (e.g., about 100 cm) chirped periodic structure, exemplarily an apodized and chirped fiber Bragg grating. The input pulse to the periodic structure typically are not soliton pulses, but the passage through the periodic structure results in transformation of the pulses into substantially transform-limited soliton pulses that are available (typically after appropriate modification) for transmission through conventional optical fiber towards utilization means. The input pulses can be generated by any applicable method, e.g., by combining the cw outputs of two lasers that differ with regard to the frequency of their output.

    Abstract translation: 光脉冲压缩在非常高的比特率光纤通信系统中是重要的。 我们公开了一种绝热的光脉冲压缩机，其可以通过相对较短的（例如约100cm）的啁啾周期结构实现实质压缩，示例性地是变迹和啁啾的光纤布拉格光栅。 到周期性结构的输入脉冲通常不是孤子脉冲，但是通过周期性结构的通过导致脉冲变换为可用的（通常在适当的修改之后）的基本上变换限制的孤子脉冲，用于通过常规光纤传输到利用 手段。 可以通过任何适用的方法产生输入脉冲，例如通过组合两个激光器的输出相对于其输出频率而不同的cw输出。

    Optical pulse compressor for optical communications systems
    24.
    发明授权
    Optical pulse compressor for optical communications systems 失效
    光通信系统光脉冲压缩机

    公开(公告)号：US6108474A

    公开(公告)日：2000-08-22

    申请号：US989093

    申请日：1997-12-11

    Applicant: Benjamin John Eggleton ,  Gadi Lenz

    Inventor： Benjamin John Eggleton ,  Gadi Lenz

    IPC: G02B6/02 ,  G02F1/35 ,  G02F1/365 ,  H01S3/00 ,  H04J14/08

    CPC classification number: G02F1/365 ,  H01S3/0057

    Abstract: In accordance with the invention, an optical pulse compressor comprises a pulse source, a section of nonlinear optical waveguide including a periodic structure, such as a Bragg grating, for providing positive dispersion and a section of linear optical waveguide including a negative dispersion component. The nonlinear waveguide should have a second order index N.sub.2 at least ten times the second order index N.sub.2 ' of the linear waveguide. The nonlinear waveguide is preferably chalcogenide fiber, with a Bragg grating photoinduced into the core. Because the grating is 4-5 orders of magnitude more dispersive than standard optical fiber, the length of the nonlinear waveguide section can be scaled down to a few centimeters with accompanying reduction of deleterious processes. Modeling suggests that compression factors of 5 with an initial 60 ps pulse are achievable with grating lengths of about 20 cm.

    Abstract translation: 根据本发明，光脉冲压缩机包括脉冲源，包括诸如布拉格光栅的周期性结构的非线性光波导的一部分，用于提供正色散和包括负色散分量的一段线性光波导。 非线性波导应该具有至少十倍于线性波导的二阶索引N2'的二阶索引N2。 非线性波导优选是硫族化物纤维，其中布拉格光栅光致激发成核心。 由于光栅与标准光纤相比分散性高4-5个数量级，因此随着减少有害过程，非线性波导部分的长度可以缩小到几厘米。 建模表明，采用初始60 ps脉冲的压缩因子为5，光栅长度约为20 cm。

    Long-period grating switches and devices using them
    25.
    发明授权
    Long-period grating switches and devices using them 失效
    长周期光栅开关和使用它们的器件

    公开(公告)号：US5907647A

    公开(公告)日：1999-05-25

    申请号：US802051

    申请日：1997-02-18

    Applicant: Benjamin John Eggleton ,  Justin Boyd Judkins ,  Richart Elliott Slusher ,  Ashish Madhukar Vengsarkar

    Inventor： Benjamin John Eggleton ,  Justin Boyd Judkins ,  Richart Elliott Slusher ,  Ashish Madhukar Vengsarkar

    IPC: G02B6/12 ,  G02F1/35 ,  G02F1/365 ,  G02B6/34

    CPC classification number: G02F1/365 ,  G02B2006/12107 ,  G02B6/02095 ,  G02F1/3511 ,  G02F2201/30

    Abstract: In accordance with the invention, an optical switch employs a long-period grating for switching light between alternative optical paths. In essence, the device comprises a variable intensity light source, a length of optical waveguide dimensioned for co-propagating light in two distinguishable modes, and a long-period grating in the waveguide for coupling between the two modes. The waveguide is nonlinear so that the effective refractive index is a function of intensity. As a consequence the coupling produced by the grating is a function of intensity. Thus different levels of light intensity can switch between the separate modes. Advantageously a mode separator is provided for directing light in the two modes onto respectively different optical output paths. A variety of two-mode switches and optical limiters are described, as well as an optical system using the switch.

    Abstract translation: 根据本发明，光开关采用长周期光栅来在备选光路之间切换光。 实质上，该装置包括一个可变强度光源，一个长度的光波导的尺寸用于以两种可分辨模式共同传播光，以及波导中的长周期光栅，用于在两种模式之间耦合。 波导是非线性的，使得有效折射率是强度的函数。 因此，由光栅产生的耦合是强度的函数。 因此，不同的光强度可以在分开的模式之间切换。 有利地，提供模式分离器用于将两种模式中的光引导到分别不同的光学输出路径上。 描述了各种双模式开关和光学限制器，以及使用该开关的光学系统。

    Optical pulse source for long haul optical communication systems
    29.
    发明授权
    Optical pulse source for long haul optical communication systems 失效
    用于长距离光通信系统的光脉冲源

    公开(公告)号：US06940889B2

    公开(公告)日：2005-09-06

    申请号：US10084788

    申请日：2002-02-26

    Applicant: Benjamin John Eggleton ,  Daniel Mahgerefteh ,  Paul Steinvurzel ,  Paul Stephen Westbrook

    Inventor： Benjamin John Eggleton ,  Daniel Mahgerefteh ,  Paul Steinvurzel ,  Paul Stephen Westbrook

    IPC: H01S5/024 ,  H01S5/062 ,  H01S5/0687 ,  H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/155 ,  H01S3/08

    CPC classification number: H04B10/508 ,  H04B10/504 ,  H04B10/572

    Abstract: In accordance with the invention, a modulated RZ pulse source comprises a modulated light source optically coupled to a stabilized Bragg grating filter and one or more optical taps. The light source is preferably modulated in power and frequency and has an adjustable channel wavelength λ. The Bragg grating filter has a reflectivity bandwidth having a high slope reflectivity cutoff and is preferably tunable. A feedback arrangement responsive to the taps keeps the source channel wavelength λ on the edge of the reflectivity bandwidth for shaping RZ pulses. When the Bragg grating is stabilized, the feedback system maintains λ at a value linked to the grating reflectivity edge and, by overlapping at least part of the optical spectrum of the source, converts the modulated source light into RZ pulses with high extinction ratio (≧12 dB). The result is a high power, jitter-free RZ pulse source that is compact, inexpensive and power efficient.

    Abstract translation: 根据本发明，调制的RZ脉冲源包括光耦合到稳定的布拉格光栅滤波器和一个或多个光学抽头的调制光源。 光源优选地在功率和频率上进行调制，并具有可调节的通道波长λ。 布拉格光栅滤波器具有高斜率反射截止的反射带宽，并且优选是可调谐的。 响应于抽头的反馈装置将源通道波长λ保持在反射带宽的边缘上，以形成RZ脉冲。 当布拉格光栅稳定时，反馈系统将λ维持在与光栅反射率边缘相关联的值，并且通过重叠光源的至少一部分光谱，将调制的源光转换成具有高消光比的RZ脉冲（> = 12dB）。 结果是高功率，无抖动的RZ脉冲源，紧凑，价格低廉，功率高。

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