| 摘要 |
A signal transmission system having a switch that enables failed bit channels to be reallocated to bit signals in a manner that keeps this transmission system operable while repairs are made. Such failed bit channel can be reallocated to a least significant bit of data in systems in which the lack of such bit does not unduly degrade operation. A second switch can invert this allocation so that bit signals exit from this system over the same output path, regardless of this reallocation of transmission channels. A simple wavelength division multiplexer/demultiplexer is presented that utilizes the product of fiber length, spacing between adjacent wavelength division multiplexed channels and fiber dispersion to produce a desired temporal offset of bits in different channels to be achieved. |
