公开(公告)号：US20080212962A1

公开(公告)日：2008-09-04

申请号：US12114707

申请日：2008-05-02

申请人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Robert Tamura

发明人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Robert Tamura

IPC分类号： H04B10/08

CPC分类号： H04B10/2519

摘要： A chirp measurement apparatus includes a splitting section for splitting input signal light to two paths; a first dispersion medium with a total dispersion amount of +D (≠0) at a used wavelength, and a second dispersion medium with a total dispersion amount of −D (≠0) at the used wavelength;first and second nonlinear photo-detecting sections for receiving the signal light beams passing through the first and second dispersion media, and for outputting electric signals with the intensities proportional to nth power of the intensities of the signal light beams, where n is greater than one; and a difference detecting section for computing a difference between the electric signals output from the first and second nonlinear photo-detecting sections, and for outputting a differential signal corresponding to the difference as a chirp signal of the input signal light.

公开(公告)号：US06876792B2

公开(公告)日：2005-04-05

申请号：US10421634

申请日：2003-04-21

申请人： Masaaki Kurihara ,  Shigekazu Fujimoto ,  Tetsuro Komukai ,  Tetsuro Inui

发明人： Masaaki Kurihara ,  Shigekazu Fujimoto ,  Tetsuro Komukai ,  Tetsuro Inui

IPC分类号： G02B6/12 ,  G02B5/18 ,  G02B6/02 ,  G03F1/26 ,  G03F1/68 ,  G02B6/34 ,  G02B6/00

CPC分类号： G02B5/1857 ,  G02B6/02085 ,  G02B6/02138 ,  G03F1/34

摘要： The present invention relates to a precision phase mask for forming diffraction grating in optical fiber and optical waveguide, to provide them with nonlinear chirped grating for dispersion compensation use and having low fluctuation or crosstalk in the group delay characteristics. The diffraction grating is formed by means of interference fringe between diffracted lights of different orders, in which the cycle of the diffraction grating 20 increases nonlinearly, wherein plurality of diffraction gratings G1, G2, G3 . . . having different cycles are assembled on a plane in increasing order of the cycle with the directions of the diffraction gratings directed to the same direction, and assembled in such a manner that, where the cycle of grating changes nonlinearly and discontinuously, the regions having larger rate of change of the cycle contain proportionally more discontinuous phases per unit length.

摘要翻译： 本发明涉及用于在光纤和光波导中形成衍射光栅的精密相位掩模，为它们提供用于色散补偿使用的非线性啁啾光栅，并且在群延迟特性中具有低波动或串扰。 衍射光栅通过不同阶衍射光之间的干涉条纹形成，其中衍射光栅20的周期非线性地增加，其中多个衍射光栅G1，G2，G3。 。 。 具有不同周期的循环以循环的递增顺序组装在平面上，其中衍射光栅的方向指向相同的方向，并以这样的方式组装，使得在光栅的周期非线性和不连续地变化的情况下，具有较大速率的区域 周期的变化包含每单位长度成比例地更多的不连续相。

公开(公告)号：US07668459B2

公开(公告)日：2010-02-23

申请号：US10624082

申请日：2003-07-21

申请人： Tetsuro Inui ,  Hidehiko Takara ,  Takashi Yamamoto

发明人： Tetsuro Inui ,  Hidehiko Takara ,  Takashi Yamamoto

IPC分类号： H04B10/08

CPC分类号： H04B10/25133 ,  H04B10/077 ,  H04B10/07951 ,  H04B10/07955

摘要： In a wavelength division multiplexing optical transmission system, in order to know an influence amount of a temperature dependency of a dispersion slope, a method of monitoring a dispersion variation amount in two or more of wavelength channels is provided. Further, a method of compensating a wavelength dependency of a temperature dependency of the dispersion by providing an appropriate dispersion individually to the channels or summarizingly for all of bandwidths based on the monitored dispersion variation amounts is provided. According to the present invention, in the WDM optical transmission system, a deterioration in a transmission characteristic by influence of a temperature variation of the dispersion slope can be reduced.

摘要翻译： 在波分复用光传输系统中，为了知道色散斜率的温度依赖性的影响量，提供了监测两个或更多个波长信道中的色散变化量的方法。 此外，提供了一种通过基于所监视的色散变化量向频道分别提供适当的色散或总体上针对所有带宽来补偿色散的温度依赖性的波长依赖性的方法。 根据本发明，在WDM光传输系统中，可以降低由色散斜率的温度变化引起的透射特性的劣化。

公开(公告)号：US20080296481A1

公开(公告)日：2008-12-04

申请号：US12114688

申请日：2008-05-02

申请人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Robert Tamura

发明人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Robert Tamura

IPC分类号： G01N21/25

CPC分类号： H04B10/2519

摘要： A chirp measurement apparatus includes a splitting section for splitting input signal light to two paths; a first dispersion medium with a total dispersion amount of +D (≠0) at a used wavelength, and a second dispersion medium with a total dispersion amount of −D (≠0) at the used wavelength; first and second nonlinear photo-detecting sections for receiving the signal light beams passing through the first and second dispersion media, and for outputting electric signals with the intensities proportional to nth power of the intensities of the signal light beams, where n is greater than one; and a difference detecting section for computing a difference between the electric signals output from the first and second nonlinear photo-detecting sections, and for outputting a differential signal corresponding to the difference as a chirp signal of the input signal light.

摘要翻译： 啁啾测量装置包括：分离部分，用于将输入信号光分成两条路径; 在使用波长处具有+ D（<> 0）的总色散量的第一分散介质和在所用波长处具有总分散量为D（<> 0）的第二分散介质; 第一和第二非线性光电检测部分，用于接收通过第一和第二分散介质的信号光束，并输出具有与信号光束的强度的第n次方成比例的强度的电信号，其中n大于1 ; 以及差分检测部分，用于计算从第一和第二非线性光电检测部分输出的电信号之间的差异，并输出对应于差值的差分信号作为输入信号光的啁啾信号。

公开(公告)号：US20070242956A1

公开(公告)日：2007-10-18

申请号：US10624082

申请日：2003-07-21

申请人： Tetsuro Inui ,  Hidehiko Takara ,  Takashi Yamamoto

发明人： Tetsuro Inui ,  Hidehiko Takara ,  Takashi Yamamoto

IPC分类号： H04B10/04

CPC分类号： H04B10/25133 ,  H04B10/077 ,  H04B10/07951 ,  H04B10/07955

摘要： In a wavelength division multiplexing optical transmission system, in order to know an influence amount of a temperature dependency of a dispersion slope, a method of monitoring a dispersion variation amount in two or more of wavelength channels is provided. Further, a method of compensating a wavelength dependency of a temperature dependency of the dispersion by providing an appropriate dispersion individually to the channels or summarizingly for all of bandwidths based on the monitored dispersion variation amounts is provided. According to the present invention, in the WDM optical transmission system, a deterioration in a transmission characteristic by influence of a temperature variation of the dispersion slope can be reduced.

摘要翻译： 在波分复用光传输系统中，为了知道色散斜率的温度依赖性的影响量，提供了监测两个或更多个波长信道中的色散变化量的方法。 此外，提供了一种通过基于所监视的色散变化量向频道分别提供适当的色散或总体上针对所有带宽来补偿色散的温度依赖性的波长依赖性的方法。 根据本发明，在WDM光传输系统中，可以降低由色散斜率的温度变化引起的透射特性的劣化。

公开(公告)号：US07153613B2

公开(公告)日：2006-12-26

申请号：US10234452

申请日：2002-09-03

申请人： Masaaki Kurihara ,  Shigekazu Fujimoto ,  Tetsuro Komukai ,  Tetsuro Inui

发明人： Masaaki Kurihara ,  Shigekazu Fujimoto ,  Tetsuro Komukai ,  Tetsuro Inui

IPC分类号： G01F9/00

CPC分类号： G03F1/34 ,  G03F7/001

摘要： The invention relates to a process for the fabrication of an optical fiber-processing phase mask that is reduced in terms of pitch variations on the mask and stitching errors, and provides a process for the fabrication of a chirped type optical fiber-processing phase mask wherein a grating form of grooves provided in one surface of a quartz substrate is configured as an optical fiber-processing grating pattern. At an exposure step, writing data obtained by arranging and compiling a plurality of data for a repetitive groove-and-strip pattern while the pitch of repetition is modulated are used and an electron beam resist is provided on a phase mask blank, so that writing is carried out all over the writing area on said phase mask blank continuously in a vertical direction to said grating form of grooves.

摘要翻译： 本发明涉及一种制造光纤加工相位掩模的方法，该掩模在掩模上的间距变化和缝合误差方面减少，并且提供了一种制造啁啾型光纤加工相位掩模的方法，其中 设置在石英衬底的一个表面中的光栅形式的槽被配置为光纤处理光栅图案。 在曝光步骤中，使用通过布置和编译重复的凹槽和带状图案的多个数据而获得的数据，同时重复的间距被调制，并且在相位掩模空白上提供电子束抗蚀剂，使得写入 在所述相位掩模坯料上的整个写入区域上沿与所述光栅形式的凹槽在垂直方向上连续进行。

公开(公告)号：US20060022123A1

公开(公告)日：2006-02-02

申请号：US11232963

申请日：2005-09-23

申请人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Tamura

发明人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Tamura

IPC分类号： G01N21/25

CPC分类号： H04B10/2519

摘要： A chirp measurement apparatus includes a splitting section for splitting input signal light to two paths; a first dispersion medium with a total dispersion amount of +D (≠0) at a used wavelength, and a second dispersion medium with a total dispersion amount of −D (≠0) at the used wavelength; first and second nonlinear photo-detecting sections for receiving the signal light beams passing through the first and second dispersion media, and for outputting electric signals with the intensities proportional to nth power of the intensities of the signal light beams, where n is greater than one; and a difference detecting section for computing a difference between the electric signals output from the first and second nonlinear photo-detecting sections, and for outputting a differential signal corresponding to the difference as a chirp signal of the input signal light.

摘要翻译： 啁啾测量装置包括：分离部分，用于将输入信号光分成两条路径; 在使用波长处具有+ D（<> 0）的总色散量的第一分散介质和在所用波长处具有总分散量为D（<> 0）的第二分散介质; 第一和第二非线性光电检测部分，用于接收通过第一和第二分散介质的信号光束，并输出具有与信号光束的强度的第n次方成比例的强度的电信号，其中n大于1 ; 以及差分检测部分，用于计算从第一和第二非线性光电检测部分输出的电信号之间的差异，并输出对应于差值的差分信号作为输入信号光的啁啾信号。

公开(公告)号：US06958467B2

公开(公告)日：2005-10-25

申请号：US10284286

申请日：2002-10-31

申请人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Robert Tamura

发明人： Tetsuro Inui ,  Kunihiko Mori ,  Kohichi Robert Tamura

IPC分类号： G01M11/02 ,  G02F1/35 ,  G02F2/00 ,  H04B10/07 ,  H04B10/079 ,  H04B10/25 ,  H04B10/291 ,  G01N21/25

CPC分类号： H04B10/2519

摘要： A chirp measurement apparatus includes a splitting section for splitting input signal light to two paths; a first dispersion medium with a total dispersion amount of +D (≠0) at a used wavelength, and a second dispersion medium with a total dispersion amount of −D (≠0) at the used wavelength;first and second nonlinear photo-detecting sections for receiving the signal light beams passing through the first and second dispersion media, and for outputting electric signals with the intensities proportional to nth power of the intensities of the signal light beams, where n is greater than one; and a difference detecting section for computing a difference between the electric signals output from the first and second nonlinear photo-detecting sections, and for outputting a differential signal corresponding to the difference as a chirp signal of the input signal light.

摘要翻译： 啁啾测量装置包括：分离部分，用于将输入信号光分成两条路径; 在使用波长处具有+ D（<> 0）的总色散量的第一分散介质和在所用波长处具有总分散量为D（<> 0）的第二分散介质; 第一和第二非线性光电检测部分，用于接收通过第一和第二分散介质的信号光束，并输出具有与信号光束的强度的第n次方成比例的强度的电信号，其中n大于1 ; 以及差分检测部分，用于计算从第一和第二非线性光电检测部分输出的电信号之间的差异，并输出对应于差值的差分信号作为输入信号光的啁啾信号。