| 摘要 |
Tuning device of a tunable optical filter (1) usable particularly in reception in an optical transmission system, and intended to eject part of an optical noise, consisting particularly of the noise created by an optical receiving preamplifier (2), being superimposed on a useful optical signal, the device including means (4) for controlling a movement, along the axis of the wavelengths, of the characteristic of the said optical filter, and means, called tuning detection means, making it possible to detect the instant when the said movement command can be stopped, and themselves including an optical power detector (6) receiving a signal originating from the said optical filtre, and means (5) for detecting any modulation of a signal coming from the said optical power detector, the said movement command being able to be stopped when the said means for detecting any modulation detect modulation of the said signal originating from the said optical power detector. <IMAGE> |
