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    • 2. 发明申请
    • FEW MODE OPTICAL FIBERS FOR Er DOPED AMPLIFIERS, AND AMPLIFIERS USING SUCH
    • 用于二进制放大器的模拟光纤,以及使用这种放大器的放大器
    • WO2013106295A1
    • 2013-07-18
    • PCT/US2013/020610
    • 2013-01-08
    • CORNING INCORPORATEDBENNETT, Kevin WallaceLI, Ming-Jun
    • BENNETT, Kevin WallaceLI, Ming-Jun
    • G02B6/02H01S3/067
    • H01S3/06783G02B6/02023G02B6/02395G02B6/0365H01S3/06708H01S3/06716H01S3/06733H01S3/1608H01S3/1693
    • According to some embodiments the optical fiber comprises: (i) a glass core doped with greater than 300 ppm of Er 2 O 3 and at least 0.5 wt% of AI 2 O 3 , with a radius R, from about 3 μm to about 15 μm, a relative refractive index delta Δ 1ΜΑΧ from about between 0.3% to 2% relative to the glass cladding; an effective area of LPO1 mode between 10 μm 2 and 100 μm 2 at 1550nm, the glass core radius R 1 and refractive index selected such that the core is capable of supporting the propagation and transmission of an optical signal with X number of LP modes at a wavelength of 1550 nm, wherein X is an integer greater than 1 and not greater than 20; and ( ii) a g lass cladding surrounding and in direct contact with the glass core. According to another embodiment the optical fiber comprises (i) a glass core doped with greater than 700 ppm of Er 2 O 3 , at least 0.5 wt% of AI 2 O 3 and 0 to 25 wt% of GeO 2 with a radius 3 μm ≤ R 1 ≤ 15 μm, a maximum relative refractive index delta Δ 1ΜΑΧ 0.7 to 1.5% relative to the glass cladding; an effective area of LPO1 mode between 50 μm 2 and 150 μm 2 at 1550nm, the g lass core supporting the propagation and transmission of an optical signal with X number of LP modes at a wavelength of 1550 nm, wherein X is an integer greater than 1 and not greater than 20; and ( ii) a g lass cladding surrounding and in direct contact with the glass core.
    • 根据一些实施例,光纤包括:(i)掺杂大于300ppm的Er 2 O 3和至少0.5重量%的Al 2 O 3的玻璃芯,半径R为约3μm至约15μm,相对折射率 ΔMaAlphaChi相对于玻璃包层约0.3%至2%; 1550nm处的10mum2和100mum2之间的LPO1模式的有效面积,玻璃纤芯半径R1和折射率被选择,使得芯能够支持具有X个LP模式的光信号的传播和传输,波长为 1550nm,其中X是大于1且不大于20的整数; 和(ii)围绕并与玻璃芯直接接触的g包层包层。 根据另一个实施方案,光纤包括(i)掺杂有大于700ppm的Er 2 O 3,至少0.5wt%的Al 2 O 3和0至25wt%的GeO 2,半径为3μm<= R1 <=15μm的玻璃芯 相对于玻璃包层的最大相对折射率ΔMa1MuAlphaChi为0.7〜1.5% 在1550nm处的50mum2和150mum2之间的LPO1模式的有效面积,g lass核支持在1550nm的波长下具有X数量的LP模式的光信号的传播和传输,其中X是大于1的整数,以及 不大于20; 和(ii)围绕并与玻璃芯直接接触的g包层包层。