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截止波长测试和近场光强分布检验表明，该光子晶体光纤确实具备较宽的单模工作范围。
The measurements of the cut-off wavelength and the near field intensity distribution show that the PCF does have comparatively wide single-mode operating range.
文中还验证了单模光纤的模场直径、截止波长、相对折射率差对OTDR曲线的影响。
In this article, the influences of the mode field diameter, the cutoff wavelength and the relative refractive index difference on the OTDR curve are also verified.
本建议包括截止波长位移单模光纤光缆的特性。
This Recommendation covers the characteristics of a cut-off shifted single-mode optical fibre cable.
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