METHOD AND APPARATUS FOR PROVIDING LIGHT HAVING A SELECTED POLARIZATION WITH AN OPTICAL FIBER
    1.
    发明申请
    METHOD AND APPARATUS FOR PROVIDING LIGHT HAVING A SELECTED POLARIZATION WITH AN OPTICAL FIBER 审中-公开
    用于向具有光纤的选择极化的光提供光的方法和装置

    公开(公告)号:WO2005074573A2

    公开(公告)日:2005-08-18

    申请号:PCT/US2005002908

    申请日:2005-01-31

    Abstract: Optical apparatus (110, 500, 600, 800, 1000) for providing light having a selected linear polarization having a polarization ratio, the apparatus (110, 500, 600, 800, 1000) comprising a length of optical fiber (120, 504, 604, 804, 1001) comprising a rare earth for providing light having a first wavelength responsive to receiving pump light having a second wavelength that is different than said first wavelength, wherein if the length of optical fiber (120, 504, 604, 804, 1004) were placed in a first position between the length of fiber (120, 504, 604, 804, 1004) is substantially linearly oriented (20) the fiber (120, 504, 604, 804, 1004) could propagate at the first wavelength a fundamental mode and a plurality of higher order modes and the apparatus (110, 500, 600, 800, 1000) could provide light having a first polarization ratio for the selected linear polarization and an M parameter, and wherein the length of fiber (120, 504, 604, 804, 1004) is positioned in a second position that increases the bend loss of the fiber relative to the first position such that, responsive to the increased bend loss, the apparatus (110, 500, 600, 800, 1000) can provide light having a reduced M parameter as well as a second polarization ratio for the selected polarization that is increased relative to the first polarization ratio, the increase being at least 6 dB greater than the first polarization ratio, and wherein when the length of fiber (120, 504, 604, 804, 1004) is in the second position the apparatus (110, 500, 600, 800, 1000) can provide a slope efficiency that is at least 50 % of the ratio of the second wavelength to the first wavelength.

    Abstract translation: 用于提供具有偏振比的所选线性偏振光的光学装置(110,500,600,800,1000),所述装置(110,500,600,800,1000)包括一段长度的光纤(120,504, 包括稀土,用于提供响应于接收具有不同于所述第一波长的第二波长的泵浦光的具有第一波长的光,其中如果光纤的长度(120,504,604,801, 1004)被放置在光纤(120,504,604,804,1004)的长度之间的第一位置,基本上线性地定向(20),光纤(120,504,604,804,1004)可以在第一波长处传播 基本模式和多个高阶模式,并且所述装置(110,500,600,800,1000)可以提供具有所选择的线性偏振的第一偏振比和具有M 2参数的光,并且其中, 光纤(120,504,604,804,1004)位于第二位置 增加光纤相对于第一位置的弯曲损耗,使得响应于增加的弯曲损耗,设备(110,500,600,800,1000)可以提供具有减小的M 2参数的光以及 所选择的偏振的第二偏振比相对于第一偏振比增加,所述增加比第一偏振比大至少6dB,并且其中当光纤(120,504,604,804,1004)的长度为 在第二位置,设备(110,500,600,800,1000)可以提供至少50%的第二波长与第一波长的比率的斜率效率。

    METHOD AND APPARATUS FOR PROVIDING LIGHT HAVING A SELECTED POLARIZATION WITH AN OPTICAL FIBER

    公开(公告)号:WO2005074573A3

    公开(公告)日:2005-08-18

    申请号:PCT/US2005/002908

    申请日:2005-01-31

    Abstract: Optical apparatus (110, 500, 600, 800, 1000) for providing light having a selected linear polarization having a polarization ratio, the apparatus (110, 500, 600, 800, 1000) comprising a length of optical fiber (120, 504, 604, 804, 1001) comprising a rare earth for providing light having a first wavelength responsive to receiving pump light having a second wavelength that is different than said first wavelength, wherein if the length of optical fiber (120, 504, 604, 804, 1004) were placed in a first position between the length of fiber (120, 504, 604, 804, 1004) is substantially linearly oriented (20) the fiber (120, 504, 604, 804, 1004) could propagate at the first wavelength a fundamental mode and a plurality of higher order modes and the apparatus (110, 500, 600, 800, 1000) could provide light having a first polarization ratio for the selected linear polarization and an M 2 parameter, and wherein the length of fiber (120, 504, 604, 804, 1004) is positioned in a second position that increases the bend loss of the fiber relative to the first position such that, responsive to the increased bend loss, the apparatus (110, 500, 600, 800, 1000) can provide light having a reduced M 2 parameter as well as a second polarization ratio for the selected polarization that is increased relative to the first polarization ratio, the increase being at least 6 dB greater than the first polarization ratio, and wherein when the length of fiber (120, 504, 604, 804, 1004) is in the second position the apparatus (110, 500, 600, 800, 1000) can provide a slope efficiency that is at least 50 % of the ratio of the second wavelength to the first wavelength.

Patent Agency Ranking