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本文介绍我院研制的140Mb/s数字彩色电视光纤传输系统中光端机的设计考虑,计算了在0.85μm和1.3μm两个波长下的接收灵敏度和无中继距传输离。文中较详细地讨论了渐变型多模光纤模式色散和波长色散对无中继距离的影响。
This article introduces the design considerations of the optical transceiver in the 140Mb / s digital color television optical transmission system developed by our hospital, and calculates the receiving sensitivity and repeater transmission distance under the two wavelengths of 0.85μm and 1.3μm. In this paper, the influence of mode dispersion and wavelength dispersion on the distance without relay in multimode fiber is discussed in detail.