| 摘要 |
<p>A multiple-wavelength optical transmitter comprises a light source, a temperature controller for controlling the temperature of the light source, a temperature control (ATC) loop for controlling the operation of the temperature controller, and a wavelength control (AFC) loop. The ATC loop detects the temperature of the light source and performs feedback control of the operation of the temperature controller so that the optical output wavelength of the light source may fall within a wave-pulling range corresponding to the target wavelength of the AFC loop. The AFC loop comprises a filter for wavelength detection with a periodic band pass characteristic. After stabilized, the AFC loop begins wavelength pulling, and controls the operation of the temperature controller to pull the light source output wavelength in a stable point which corresponds to the target wavelength among a plurality of stable points.</p> |
