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31. 发明授权

US06201916B1 Article comprising means for optical pulse reshaping 失效
标题翻译：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
申请人： Benjamin John Eggleton , Gadi Lenz , Richart Elliott Slusher , Stefan Heinz Spalter
发明人： Benjamin John Eggleton , Gadi Lenz , Richart Elliott Slusher , Stefan Heinz Spalter
IPC分类号： G02B6293
CPC分类号： H04B10/25077 , H04B2210/258
摘要： 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.
摘要翻译：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。

32. 发明授权

US06163638A Article comprising an optical pulse compressor 有权
标题翻译：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
申请人： Benjamin John Eggleton , Gadi Lenz
发明人： Benjamin John Eggleton , Gadi Lenz
IPC分类号： G02F1/35 , G02B6/34 , H04B10/18
CPC分类号： G02B6/02085 , G02B6/29322 , H04B10/25077
摘要： 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.
摘要翻译：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。

33. 发明授权

US6108474A Optical pulse compressor for optical communications systems 失效
标题翻译：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
申请人： Benjamin John Eggleton , Gadi Lenz
发明人： Benjamin John Eggleton , Gadi Lenz
IPC分类号： G02B6/02 , G02F1/35 , G02F1/365 , H01S3/00 , H04J14/08
CPC分类号： G02F1/365 , H01S3/0057
摘要： 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.
摘要翻译：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。

34. 发明授权

US5907647A Long-period grating switches and devices using them 失效
标题翻译：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
申请人： Benjamin John Eggleton , Justin Boyd Judkins , Richart Elliott Slusher , Ashish Madhukar Vengsarkar
发明人： Benjamin John Eggleton , Justin Boyd Judkins , Richart Elliott Slusher , Ashish Madhukar Vengsarkar
IPC分类号： G02B6/12 , G02F1/35 , G02F1/365 , G02B6/34
CPC分类号： G02F1/365 , G02B2006/12107 , G02B6/02095 , G02F1/3511 , G02F2201/30
摘要： 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.
摘要翻译：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。

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