A multiwavelength laser source composed of a single semiconductor optical amplifier and a commercially available off-the-shelf wavelength-division multiplexed (WDM) filter is constructed and tested under actively mode-locking operation. Five independent mode-locked wavelength channels are generated simultaneously, with a wavelength spacing of 1.6 nm established by the WDM filter. In addition, to demonstrate the potential of this mixed time–frequency, or hybrid WDM–optical time-division multiplexed, signal, we demonstrate a simple parallel-to-serial wavelength conversion to increase the pulse repetition rate of the mode-locked laser by a number of output wavelengths for applications in high-performance optical sampling applications.
© 2000 Optical Society of America
Ikuko Nitta, J. Abeles, and Peter J. Delfyett, "Hybrid Wavelength-Division and Optical Time-Division Multiplexed Multiwavelength Mode-Locked Semiconductor Laser," Appl. Opt. 39, 6799-6805 (2000)