The concept of the beam propagation factor M2 is extended for chromatic laser beams. The definition of the beam propagation factor can be generalized with the weighted effective wavelength.
本文把激光光束的M2因子的概念扩展到了彩色激光光束，并定义彩色激光光束的M2因子为有效波长的加权平均。
The six — wavelengths pyrometers with six interference filters for effective wavelength defined and with optical fibers for beam split were developed by the U. S. and CEC scientists inl980's.
八十年代以来，美国及欧共体研制成采用干涉滤光片限定工作波长及带宽的六波长高温计，而分光采用光导纤维。
Its objective is trying to offer the best balance among delay, load and the cost of wavelength conversion in addition to improving the effective wavelength utilization and failure restoring rate.
该机制以网络延迟、负载、波长转换代价达到平衡的最佳值为目标，兼顾波长资源的高效利用和故障恢复率的提高。
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