| 摘要 |
In an optical transmission device comprising a plurality of semiconductor lasers ( lambda 1, ..., lambda N) for transmitting an equal plurality of information streams, the wavelengths of the radiation beams from the lasers are stablised by successively selecting them and then measuring them by means of a wavelength meter (20) and subsequently by correcting them. Since the wavelength of the radiation emitted by each laser may vary within limits imposed by neighbouring wavelengths, a high measuring rate of the wavelength meter is not required. |
