首页>
外国专利>
ER-DOPED OPTICAL FIBER AMPLIFIER FOR WAVELENGTH MULTIPLEX TRANSMISSION
ER-DOPED OPTICAL FIBER AMPLIFIER FOR WAVELENGTH MULTIPLEX TRANSMISSION
展开▼
机译:掺有ER的光纤,用于波长复数传输
展开▼
页面导航
摘要
著录项
相似文献
摘要
PROBLEM TO BE SOLVED: To suppress the occurrence of waveform distortion by eliminating the possibility of the induction of a nonlinear phenomenon even when the multiplexing number of wavelengths increases by adjusting the effective core diameter of an Er-doped optical fiber to a specific value or larger and constituting an optical fiber amplifier so that the zero dispersion wavelength may become a wavelength on the outside of a specific wavelength band. ;SOLUTION: In an Er-doped optical fiber which is used for constituting an Er-doped optical fiber amplifier for wavelength multiplex transmission, seven cores (having refractive indexes of nw) 10 to which both Er and Al are added are formed in a clad 8 and an intermediate layer (having a refractive index Ni) 9 is provided on the outer periphery of each core 10. Each core has a diameter D and the interval between each core is S. Fig. (b) shows the refractive index distribution in the optical fiber. The relative refractive-index difference between each core 10 and clad (having a refractive index nc) 8 (or the intermediate layer 9) is expressed as Δn. Then the effective core diameter of the optical fiber at 1.55μm is adjusted to ≥9μm and the zero dispersion wavelength is adjusted to a wavelength longer than 1.53-1.56μm by appropriately setting the values of the Δn, D, and S.;COPYRIGHT: (C)1998,JPO
展开▼
机译:解决的问题:通过将掺Er光纤的有效纤芯直径调整为特定值或更大,甚至消除波长的多路复用时,通过消除引起非线性现象的可能性来抑制波形失真的发生并且构成光纤放大器,以使零色散波长成为特定波长带的外侧的波长。 ;解决方案:在用于构成用于波长多路传输的掺Er光纤放大器的掺Er光纤中,Er和7都具有七个芯(折射率为n w Sub>)在包层8中添加Al而形成,并且在每个芯10的外周上设置中间层(具有折射率N i Sub>)9。每个芯具有直径D和之间的间隔。每个纤芯为S。图(b)显示了光纤中的折射率分布。每个纤芯10和包层(具有折射率n c Sub>)8(或中间层9)之间的相对折射率差表示为Δn。然后通过适当设置Δn,D和S的值,将1.55μm处的光纤的有效芯径调整为≥9μm,并将零色散波长调整为大于1.53-1.56μm的波长。日本特许厅(C)1998
展开▼