  We propose a simple approach to implement a tunable, high power and narrow
linewidth laser source based on a series of highly coherent tones from an
electro-optic frequency comb and a set of 3 DFB slave lasers. We experimentally
demonstrate approximately 1.25 THz (10 nm) of tuning within the C-Band centered
at 192.9 THz (1555 nm). The output power is approximately 100 mW (20 dBm), with
a side band suppression ratio greater than 55 dB, and a linewidth below 400 Hz
across the full range of tunability. This approach is scalable and may be
extended to cover a significantly broader optical spectral range.
