| 摘要 |
A system for multiplexed transmission of different wavelengths of light comprises at least two light sources 12-16 whose images are formed on the end of an optical fibre 32. The images have displaced spectra so that a different part of the spectrum of each light source is imaged on to the end of the optical fibre and each part is transmitted by the optical fibre. The images themselves may be displaced by displacing the light sources, or the images may be coincident, their spectra being displaced by using light sources with emission spectra centred on different wavelengths. <IMAGE>
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