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1. 发明公开

EP0468412A2 Apparatus and method for inspecting optical fibers 失效
标题翻译： Verfahren und Vorrichtung zumÜberprüfenoptischer Fasern。
公开(公告)号：EP0468412A2
公开(公告)日：1992-01-29
申请号：EP91112253.9
申请日：1991-07-22
申请人： ADVANTEST CORPORATION
发明人： Kaneko, Shigeki , Sakurai, Takao
IPC分类号： G01M11/00
CPC分类号： G01M11/3145
摘要： An optical pulse (Op) of a fixed width (D) is applied to an optical fiber (13), back scattering light from the optical fiber is converted to an electric signal, which is converted to a digital signal by sampling with a fixed period. In a difference calculating section (26) an average of digital signals at a first sample point and at W sample points preceding the first sample point is used as data at the first sample point, and an average of digital signals at a second sample point and at W sample points following the second sample point, which is after the first sample point by a number of sample points corresponding to the width of the optical pulse, is used as data at the second sample point. The difference between the data at the first sample point and the data at the second sample point is calculated for each of a series of sample points to obtain difference waveform data. Changing points of the difference waveform data are detected and a spliced point of the optical fiber is decided, based on the detected changing points.
摘要翻译：将固定宽度（D）的光脉冲（Op）施加到光纤（13），将来自光纤的反向散射光转换成电信号，通过固定周期采样将其转换为数字信号。在差分计算部分（26）中，在第一采样点处的第一采样点和W采样点处的数字信号的平均值被用作第一采样点处的数据，并且在第二采样点处的数字信号的平均值在第二采样点之后的W采样点，其在第一采样点之后与对应于光脉冲宽度的多个采样点之间的采样点用作第二采样点处的数据。对于一系列采样点中的每一个，计算第一采样点的数据与第二采样点的数据之间的差异，以获得差分波形数据。基于检测到的变化点，检测差分波形数据的变化点，并确定光纤的拼接点。

2. 发明公开

EP2626742A1 Wavelength converting apparatus, light source apparatus and wavelength converting method 有权
标题翻译： Wellenlängenumwandlungsvorrichtung，Lichtquellenvorrichtung undWellenlängenumwandlungsverfahren
公开(公告)号：EP2626742A1
公开(公告)日：2013-08-14
申请号：EP12196585.9
申请日：2012-12-11
申请人： ADVANTEST CORPORATION
发明人： Sakurai, Takao
IPC分类号： G02F1/377 , G02F1/35 , G02F1/355
CPC分类号： G02F1/335 , G02F1/33 , G02F1/3534 , G02F1/3558 , G02F1/3775 , G02F2001/3546 , G02F2001/3548 , G02F2203/05 , G02F2203/24 , G02F2203/58
摘要： In order to create a stable non-linear optical effect with high efficiency for a plurality of input lights having different wavelengths, according to a first aspect of the present invention, provided is a wavelength conversion apparatus (200) comprising an input section (210) into which input light is input; a wavelength converting section (220) that includes a polarity inverting structure (222) whose polarity inverts periodically and that, in response to the input of light having a wavelength corresponding to the period with which the polarity inverts, converts the wavelength of the light; and a direction changing section (230) that changes a progression direction in which the input light passes through the polarity inverting structure (222),dependent on the wavelength of the input light, without changing relative positions of the input section (210) and the polarity inverting structure (222). Also provided are a light source apparatus (100) and a wavelength converting method.
摘要翻译：为了对具有不同波长的多个输入光产生高效率的稳定的非线性光学效果，根据本发明的第一方面，提供了一种波长转换装置（200），包括输入部分（210）输入光; 波长转换部分（220），其包括极性反转结构（222），其极性周期性反转，并且响应于具有与极性反相的周期相对应的波长的光的输入，转换光的波长; 以及根据输入光的波长而改变输入光通过极性反转结构（222）的行进方向的方向改变部（230），而不改变输入部（210）和极性反转结构（222）。还提供了光源装置（100）和波长转换方法。

3. 发明授权

EP2626742B1 Wavelength converting apparatus, light source apparatus and wavelength converting method 有权
标题翻译：波长转换装置，光源装置和波长转换方法
公开(公告)号：EP2626742B1
公开(公告)日：2015-05-06
申请号：EP12196585.9
申请日：2012-12-11
申请人： ADVANTEST CORPORATION
发明人： Sakurai, Takao
IPC分类号： G02F1/377 , G02F1/35 , G02F1/355
CPC分类号： G02F1/335 , G02F1/33 , G02F1/3534 , G02F1/3558 , G02F1/3775 , G02F2001/3546 , G02F2001/3548 , G02F2203/05 , G02F2203/24 , G02F2203/58

4. 发明授权

EP0468412B1 Apparatus and method for inspecting optical fibers 失效
标题翻译：一种用于光学纤维的检查方法和装置。
公开(公告)号：EP0468412B1
公开(公告)日：1995-11-29
申请号：EP91112253.9
申请日：1991-07-22
申请人： ADVANTEST CORPORATION
发明人： Kaneko, Shigeki , Sakurai, Takao
IPC分类号： G01M11/00
CPC分类号： G01M11/3145

5. 发明公开

EP0468412A3 Apparatus and method for inspecting optical fibers 失效
标题翻译：检测光纤的装置和方法
公开(公告)号：EP0468412A3
公开(公告)日：1992-11-04
申请号：EP91112253.9
申请日：1991-07-22
申请人： ADVANTEST CORPORATION
发明人： Kaneko, Shigeki , Sakurai, Takao
IPC分类号： G01M11/00
CPC分类号： G01M11/3145
摘要： An optical pulse (Op) of a fixed width (D) is applied to an optical fiber (13), back scattering light from the optical fiber is converted to an electric signal, which is converted to a digital signal by sampling with a fixed period. In a difference calculating section (26) an average of digital signals at a first sample point and at W sample points preceding the first sample point is used as data at the first sample point, and an average of digital signals at a second sample point and at W sample points following the second sample point, which is after the first sample point by a number of sample points corresponding to the width of the optical pulse, is used as data at the second sample point. The difference between the data at the first sample point and the data at the second sample point is calculated for each of a series of sample points to obtain difference waveform data. Changing points of the difference waveform data are detected and a spliced point of the optical fiber is decided, based on the detected changing points.

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