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    • 1. 发明授权
    • Optical module and optical system
    • 光模块和光学系统
    • US08821036B2
    • 2014-09-02
    • US13307030
    • 2011-11-30
    • Masakazu Shigehara
    • Masakazu Shigehara
    • G02B6/36
    • G02B6/4249G02B6/3825G02B6/3885G02B6/4246G02B6/4292
    • The present invention provides an optical module and an optical system that can form a two-way optical transmitting and receiving line with the same optical wiring configuration without using any special parts. The optical module includes a plurality of single-fiber optical adapters, a multi-fiber optical adapter, a plurality of single-fiber optical connectors mating with the respective single-fiber optical adapters, a multi-fiber optical connector mating with the multi-fiber optical adapter, and a plurality of optical fibers connecting the respective single-fiber optical connectors and the multi-fiber optical connector. Wiring of the optical fibers is configured to connect two single-fiber optical connectors inserted into adjacent single-fiber optical adapters and fiber holes in the upper tier and the lower tier in the same row of the multi-fiber optical connector.
    • 本发明提供了一种光模块和光学系统,其可以在不使用任何特殊部件的情况下形成具有相同光配线配置的双向光发送和接收线路。 光学模块包括多个单纤维光学适配器,多光纤光学适配器,与相应的单纤维光学适配器配合的多个单纤维光学连接器,与多纤维光纤配合的多光纤光学连接器 光学适配器以及连接各单根光纤连接器和多光纤光连接器的多根光纤。 光纤的布线被配置为连接插入到相邻的单纤维光学适配器中的两个单纤维光学连接器和多根光纤连接器的同一行中的上层和下层中的光纤孔。
    • 5. 发明授权
    • Variable dispersion compensator and optical transmission system
    • 可变色散补偿器和光传输系统
    • US06892003B2
    • 2005-05-10
    • US10114321
    • 2002-04-03
    • Makoto KatayamaToshiaki OkunoMasayuki NishimuraTomomi SanoMasakazu ShigeharaHiroshi SuganumaToru IwashimaTomohiko Kanie
    • Makoto KatayamaToshiaki OkunoMasayuki NishimuraTomomi SanoMasakazu ShigeharaHiroshi SuganumaToru IwashimaTomohiko Kanie
    • H04B10/18G02B6/26G02B6/35H04J14/02
    • H04B10/25133
    • An optical signal, which is to become the subject of dispersion compensation, is split by optical combining/splitting unit 2, and each frequency component of the optical signal that is split is reflected by the corresponding reflective mirror 30 included in reflective mirror group 3 to apply a predetermined phase shift to the respective frequency components Each reflected frequency component is then combined using optical combining/splitting unit 2, to give dispersion compensated optical signal Furthermore, in regards to reflective mirror group 3, which is used to apply phase shift to each frequency component of an optical signal, each of the respective plurality of reflective mirrors 30 is made a movable mirror having a movable reflection position that reflects the frequency components. Through this, dispersion that develops in an optical signal may be compensated with favorable controllability and high accuracy. Therefore, the precision and controllability of dispersion compensation will become superior, and realized is a variable dispersion compensator having a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator,
    • 要成为色散补偿的对象的光信号被光学合成/分离单元2分离,并且被分离的光信号的每个频率分量被包括在反射镜组3中的相应的反射镜30反射到 对相应的频率分量施加预定的相移。然后使用光学合成/分离单元2组合每个反射频率分量,以产生色散补偿的光信号。此外,关于反射镜组3,其用于将相移施加到每个 光信号的频率分量,各个反射镜30中的每一个被制成具有反映频率分量的可移动反射位置的可移动反射镜。 由此,可以以良好的可控性和高精度补偿在光信号中产生的色散。 因此,色散补偿的精度和可控性将变得更好,并且实现了具有小型化光电路的可变色散补偿器和包括这种可变色散补偿器的光传输系统,
    • 7. 发明授权
    • Optical fiber grating device
    • 光纤光栅装置
    • US06785444B2
    • 2004-08-31
    • US10129276
    • 2002-10-01
    • Shinji IshikawaMasakazu ShigeharaMichiko TakushimaTadashi Enomoto
    • Shinji IshikawaMasakazu ShigeharaMichiko TakushimaTadashi Enomoto
    • G02B634
    • G02B6/021G02B6/02095G02B6/03633
    • An optical fiber grating device 1 is a device in which a long period grating 14 is formed in a core region 11 of an optical fiber 10 consisting of the core region 11 having a refractive index n1 and an outside diameter 2a, a first cladding region 12 surrounding the core region 11 and having a refractive index n2 and an outside diameter 2b, and a second cladding region 13 surrounding the first cladding region 12 and having a refractive index n3 and an outside diameter 2c. There is a magnitude relation of n1>n2>n3 among the refractive index n1 of the core region 11, the refractive index n2 of the first cladding region 12, and the refractive index n3 of the second cladding region 13, a relative refractive index difference &Dgr;n2 of the first cladding region 12 to the second cladding region 13 is not less than 0.5%, and a thickness (c−b) of the second cladding region 13 with respect to a transmission loss peak wavelength &lgr; is in a range of not less than &lgr; nor more than 10&lgr;.
    • 光纤光栅装置1是在由具有折射率n1和外径2a的纤芯区域11构成的光纤10的芯部区域11中形成长周期光栅14的装置,第一包层区域12 围绕芯区域11并具有折射率n2和外径2b,以及围绕第一包层区域12并具有折射率n3和外径2c的第二包层区域13。 在芯区域11的折射率n1,第一包层区域12的折射率n2和第二包层区域13的折射率n3之间存在n1> n2> n3的大小关系,相对折射率差 第一包层区域12到第二包层区域13的Deltan2不小于0.5%,第二包层区域13相对于透射损耗峰值波长λ的厚度(cb)在不小于λ的范围内 也不超过10lambda。
    • 8. 发明授权
    • Branch line monitoring system and branch line monitoring method
    • 分支线路监控系统和分支线路监控方法
    • US06771358B1
    • 2004-08-03
    • US09637571
    • 2000-08-14
    • Masakazu ShigeharaHiroo Kanamori
    • Masakazu ShigeharaHiroo Kanamori
    • H04B1008
    • H04B10/071G01M11/3136
    • The present invention relates to a branch line monitoring system and branch line monitoring method comprising a configuration which improves the S/N ratio of measurement information and can be realized inexpensively. This system is provided with optical filters which correspond to optical fiber lines to be monitored as branch lines. These optical filters each have such a cutoff characteristic as to cut of f respective one channel of monitor light but transmit therethrough the remaining monitor light and signal light. When the optical filters having such a cutoff characteristic are provided, each of the optical fiber lines is monitored by use of a plurality of channels of monitor light other than the one cut off by the optical filter provided so as to correspond thereto. Consequently, as compared with the case where one optical fiber line is monitored by its corresponding one channel of monitor light, the S/N ratio of measurement information is improved, whereby highly accurate monitoring is possible.
    • 本发明涉及一种分支线路监控系统和分支线路监控方法,其包括提高测量信息的S / N比并且可以廉价地实现的配置。 该系统配备有与作为分支线监视的光纤线对应的滤光器。 这些滤光器各自具有截止特性,以切断相应的一个通道的监视光,但是透过其传输剩余的监视光和信号光。 当提供具有这种截止特性的滤光器时,通过使用多个监视光通道来监视每个光纤线路,而不是由被设置为与之对应的滤光器切断的一个。 因此,与通过其对应的一个监视光监视一条光纤线路的情况相比,测量信息的S / N比得以改善,从而可以进行高精度的监视。
    • 9. 发明授权
    • Diffraction grating device
    • 衍射光栅装置
    • US06483955B2
    • 2002-11-19
    • US09799354
    • 2001-03-06
    • Manabu ShiozakiToru IwashimaMasakazu ShigeharaKiyotaka Murashima
    • Manabu ShiozakiToru IwashimaMasakazu ShigeharaKiyotaka Murashima
    • G02F1295
    • G02B6/0208
    • This invention relates to a diffraction grating device having a refractive index modulation formed in an optical waveguide region in a predetermined region in the longitudinal direction of the optical waveguide. In the diffraction grating device, a refractive index modulation is formed in the core region in a predetermined region in the longitudinal direction of the optical waveguide. In this diffraction grating device, the optical period of the refractive index modulation is substantially constant, the phase of the refractive index modulation is inverted at a phase inversion portion, and the number of phase inversion portions is one or two. In this diffraction grating device, the absolute value of a parameter R (equation (22a)) is smaller than 0.25. According to this invention, a diffraction grating device capable of shortening the region where the refractive index modulation is formed and flattening the reflectance characteristic in the reflection wavelength band is provided.
    • 本发明涉及一种衍射光栅装置,其具有在光波导的纵向方向上的预定区域中的光波导区域中形成的折射率调制。 在衍射光栅装置中,在光波导的长度方向的规定区域的芯部区域形成折射率调制。 在该衍射光栅装置中,折射率调制的光学周期基本上是恒定的,折射率调制的相位在相位反转部分反转,相位反转部分的数量是一个或两个。 在该衍射光栅装置中,参数R(式(22a))的绝对值小于0.25。 根据本发明,提供了能够缩短形成折射率调制区域并使反射波长带的反射特性变平的衍射光栅装置。