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    • 1. 发明申请
    • CHIRAL FIBER POLARIZER
    • 红外线偏光镜
    • US20100008616A1
    • 2010-01-14
    • US12502717
    • 2009-07-14
    • Victor Il'ich KoppVictor ChurikovGuoyin ZhangSheng ZhangJonathan Singer
    • Victor Il'ich KoppVictor ChurikovGuoyin ZhangSheng ZhangJonathan Singer
    • G02F1/01
    • G02B6/105G02B6/024G02B6/2726G02B2006/0209
    • An chiral optical fiber polarizer is provided that is capable of being fabricated in-line along a conventional polarization maintaining fiber, preferably one which includes at least one structure element that is external, and parallel, to the fiber's core. The novel chiral fiber polarizer is preferably positioned between two unmodified optical fiber portions, and includes a modified central portion with altered fiber cladding interface elements on each side thereof. The modified central portion is of a non-circular cross section, and comprises at least one diameter reduced sub-section operable to allow a light signal of said predefined operation wavelength to propagate substantially in the core and in the at least one external structure element, at least one diameter expanded sub-section operable to allow a light signal to propagate substantially in the core, each sub-section being produced in accordance with a corresponding predefined diameter reduction and expansion profile, where the modified central portion is further configured in accordance with at least one helical pitch profile that is operable to, upon receiving a light signal with a first and second linear polarization components: convert the first linear polarization component to a first elliptical polarization component while scattering the first elliptical polarization component, and convert the second linear polarization component to a second elliptical polarization component, transmit therethrough, and convert back to the second linear polarization component prior to exit therefrom. The inventive polarizer also substantially eliminates the possibility of an undesirable SBS effect.
    • 提供了一种手性光纤偏振器,其能够沿着常规的保偏光纤在线制造,优选包括至少一个外部并平行于纤维芯的结构元件。 新型手性光纤偏振片优选位于两个未改性的光纤部分之间,并且包括在其每侧具有改变的光纤包覆界面元件的改性中心部分。 改进的中心部分是非圆形横截面,并且包括至少一个直径减小的子部分,其可操作以允许所述预定义的操作波长的光信号基本上在芯部和至少一个外部结构元件中传播, 至少一个直径扩大的子部分可操作以允许光信号基本上在芯中传播,每个子部分根据对应的预定义直径减小和扩张轮廓来生产,其中改进的中心部分进一步根据 至少一个螺旋桨距轮廓,其可操作以在接收到具有第一和第二线性偏振分量的光信号时:将第一线性偏振分量转换为第一椭​​圆偏振分量同时散射第一椭圆偏振分量,并将第二线性偏振分量 偏振分量转换为第二椭圆偏振分量 并且在退出之前转换回第二线性偏振分量。 本发明的偏振器也基本上消除了不期望的SBS效应的可能性。
    • 2. 发明授权
    • Polarization maintaining optical fiber polarizer
    • 极化保持光纤偏振器
    • US07983515B2
    • 2011-07-19
    • US12642603
    • 2009-12-18
    • Sheng ZhangVictor Il'ich Kopp
    • Sheng ZhangVictor Il'ich Kopp
    • G02B6/24
    • G02B6/2726
    • A novel in-fiber polarizer is provided that is implemented in an optical fiber structure based on a polarization maintaining (“PM”) optical fiber, and that is configured to impart a predetermined desired polarization to a light signal transmission of a predetermined at least one wavelength transmitted therethrough. The inventive polarizer comprises a PM optical fiber structure, with an entry end for receiving incident light and an exit end for outputting polarized light, having an optical fiber core, having at least one core mode and a core propagation constant, surrounded by a cladding, having at least one cladding mode and a cladding propagation constant, that further comprises a reduced core diameter region of a predetermined length between its entry and exit ends, wherein various predefined parameters of the modified PM optical fiber structure, including but not being limited to, the core and cladding propagation constants, the value of the reduced core diameter, and the length of the reduced core diameter region are selected and configured to produce a constructive interference for one light polarization of the input light signal, corresponding to the desired polarization, and to produce a destructive interference for a polarization orthogonal to the desired polarization, to thereby only output, at the polarizer exit end, the desired polarization component of the light signal transmission at the at least one wavelength. Additional embodiments of the inventive polarizer include multiple sequential polarizer structures with specially configured interconnects.
    • 提供一种新颖的光纤偏振器,其以基于偏振维持(“PM”)光纤的光纤结构实现,并且被配置为将预定的所需偏振赋予预定的至少一个的光信号传输 波长传输通过。 本发明的偏振器包括PM光纤结构,具有用于接收入射光的入射端和用于输出偏振光的出射端,具有光纤芯,具有由包层围绕的至少一个核心模式和核心传播常数, 具有至少一个包层模式和包层传播常数,其还包括在其入口端和出口端之间具有预定长度的减小的芯直径区域,其中修改的PM光纤结构的各种预定参数包括但不限于, 核心和包层传播常数,减小的芯直径的值和减小的芯直径区域的长度被选择和配置为对应于期望的极化的输入光信号的一个光偏振产生相长的干涉,以及 以产生与期望的极化正交的偏振的相消干涉,从而仅仅出来 在偏振器出射端处,将至少一个波长的光信号传输的期望的偏振分量放入。 本发明的偏振器的另外的实施例包括具有特别配置的互连的多个顺序偏振器结构。
    • 3. 发明申请
    • Polarization Maintaining Optical Fiber Polarizer
    • 偏振维护光纤偏振器
    • US20110002579A1
    • 2011-01-06
    • US12642603
    • 2009-12-18
    • Sheng ZhangVictor Il'ich Kopp
    • Sheng ZhangVictor Il'ich Kopp
    • G02B6/024
    • G02B6/2726
    • A novel in-fiber polarizer is provided that is implemented in an optical fiber structure based on a polarization maintaining (“PM”) optical fiber, and that is configured to impart a predetermined desired polarization to a light signal transmission of a predetermined at least one wavelength transmitted therethrough. The inventive polarizer comprises a PM optical fiber structure, with an entry end for receiving incident light and an exit end for outputting polarized light, having an optical fiber core, having at least one core mode and a core propagation constant, surrounded by a cladding, having at least one cladding mode and a cladding propagation constant, that further comprises a reduced core diameter region of a predetermined length between its entry and exit ends, wherein various predefined parameters of the modified PM optical fiber structure, including but not being limited to, the core and cladding propagation constants, the value of the reduced core diameter, and the length of the reduced core diameter region are selected and configured to produce a constructive interference for one light polarization of the input light signal, corresponding to the desired polarization, and to produce a destructive interference for a polarization orthogonal to the desired polarization, to thereby only output, at the polarizer exit end, the desired polarization component of the light signal transmission at the at least one wavelength. Additional embodiments of the inventive polarizer include multiple sequential polarizer structures with specially configured interconnects.
    • 提供一种新颖的光纤偏振器,其以基于偏振维持(“PM”)光纤的光纤结构实现,并且被配置为将预定的所需偏振赋予预定的至少一个的光信号传输 波长传输通过。 本发明的偏振器包括PM光纤结构,具有用于接收入射光的入射端和用于输出偏振光的出射端,具有光纤芯,具有由包层围绕的至少一个核心模式和核心传播常数, 具有至少一个包层模式和包层传播常数,其还包括在其入口端和出口端之间具有预定长度的减小的芯直径区域,其中修改的PM光纤结构的各种预定参数包括但不限于, 核心和包层传播常数,减小的芯直径的值和减小的芯直径区域的长度被选择和配置为对应于期望的极化的输入光信号的一个光偏振产生相长的干涉,以及 以产生与期望的极化正交的偏振的相消干涉,从而仅仅出来 在偏振器出射端处,将至少一个波长的光信号传输的期望的偏振分量放入。 本发明的偏振器的另外的实施例包括具有特别配置的互连的多个顺序偏振器结构。
    • 7. 发明授权
    • Dual twist single helix optical fiber grating
    • 双捻单螺旋光纤光栅
    • US08218921B2
    • 2012-07-10
    • US12502651
    • 2009-07-14
    • Victor Il'ich KoppJonathan SingerChristopher DraperVictor M. ChurikovDaniel Neugroschl
    • Victor Il'ich KoppJonathan SingerChristopher DraperVictor M. ChurikovDaniel Neugroschl
    • G02B6/00G02B6/02G02B6/34
    • G02B6/02071
    • A single helix chiral fiber grating of a predetermined grating strength is provided that is operable to control light transmission in a predetermined wavelength range. The novel fiber grating comprises a first optical fiber with a first interface portion at a first end, a second interface portion at a second end, and a middle portion therebetween. The first optical fiber is configured with at least one fiber core, surrounded by a corresponding at least one cladding, with a first longitudinal section disposed within the first interface portion, a second longitudinal section disposed within the second interface portion, and also includes a longitudinal helical section, disposed therebetween within the middle portion, that comprises a longitudinal helix structure of a single predetermined handedness, having a predetermined pitch profile, and having a predetermined helix diameter profile selected and configured to produce the predetermined grating strength. The helical section of the novel fiber grating is preferably produced by placing the first optical fiber, proximal to and parallel with a second fiber (or equivalent elongated member), and longitudinally twisting them together to form a double helix structure. Advantageously, the diameter of the second fiber (or a diameter profile thereof) may be selected to achieve the predetermined helix diameter profile in the helical section of the first fiber. The second fiber may be left proximal to the first fiber after fabrication or removed.
    • 提供具有预定光栅强度的单螺旋手性光纤光栅,其可操作以控制预定波长范围内的光透射。 新型光纤光栅包括第一光纤,第一光纤具有第一端部的第一接口部分,第二端部处的第二接口部分及其间的中间部分。 第一光纤配置有至少一个纤维芯,被相应的至少一个包层围绕,第一纵向部分设置在第一界面部分内,第二纵向部分设置在第二界面部分内,并且还包括纵向 螺旋部分,设置在中间部分之间,其包括具有预定螺距轮廓的单个预定螺纹度的纵向螺旋结构,并且具有预定的螺旋直径轮廓,其被选择并构造成产生预定的光栅强度。 新型光纤光栅的螺旋部分优选地通过将第一光纤放置在第二光纤(或等效的细长部件)上并与第二光纤(或相当的细长部件)平行)并将其纵向绞合在一起以形成双螺旋结构来制造。 有利地,可以选择第二纤维的直径(或其直径轮廓)以实现第一纤维的螺旋部分中的预定的螺旋直径轮廓。 在制造或移除之后,第二纤维可以靠近第一纤维。
    • 8. 发明授权
    • Chiral fiber grating device and method of fabrication thereof
    • 手性光纤光栅装置及其制造方法
    • US07463800B2
    • 2008-12-09
    • US11646130
    • 2006-12-27
    • Victor Il'ich KoppAzriel Zelig GenackGuoyin Zhang
    • Victor Il'ich KoppAzriel Zelig GenackGuoyin Zhang
    • G02B6/34
    • G02B6/02123G02B6/02085G02B6/2552G02B2006/0209
    • A chiral fiber grating for reflecting, scattering or polarizing an optical signal, or for forming a fiber laser feedback structure is disclosed. The chiral fiber grating is fabricated by fusing and then twisting/drawing two tapered optical fibers in accordance with a predetermined fabrication protocol. In one embodiment of the invention, the chiral fiber grating includes two single helix structure end-regions, with a double helix structure therebetween, providing the grating with apodizing properties. In another embodiment of invention, the pitch profile along a portion of the grating is configured to produce desired chiral fiber grating properties. In yet another embodiment of the invention, the chiral fiber grating, comprising two single helix end regions and a middle double helix region, may be separated into two or more portions after fabrication, for example to provide one or more single helix chiral fiber gratings and one or more double helix chiral fiber gratings. In an alternate embodiment of the invention, a double helix structure chiral fiber grating is provided by twisting two parallel optical fibers around a longitudinal central axis positioned therebetween.
    • 公开了一种用于反射,散射或偏振光信号或用于形成光纤激光反馈结构的手征光纤光栅。 手性光纤光栅通过根据预定的制造方案进行熔合然后扭曲/拉伸两个锥形光纤来制造。 在本发明的一个实施方案中,手性光纤光栅包括两个单螺旋结构的端部区域,其间具有双螺旋结构,为光栅提供了变迹性质。 在本发明的另一个实施例中,沿着光栅的一部分的间距轮廓被配置成产生所需的手性光纤光栅特性。 在本发明的另一个实施方案中,包括两个单螺旋端区域和中间双螺旋区域的手性光纤光栅可以在制造之后被分离成两个或多个部分,例如以提供一个或多个单螺旋手性光纤光栅和 一个或多个双螺旋手性光纤光栅。 在本发明的替代实施例中,双螺旋结构手性光纤光栅通过围绕位于它们之间的纵向中心轴线扭转两个平行光纤来提供。