Cr. Doerr et al., MULTIFREQUENCY LASER HAVING INTEGRATED AMPLIFIED OUTPUT COUPLER FOR HIGH-EXTINCTION-RATIO MODULATION WITH SINGLE-MODE BEHAVIOR, IEEE photonics technology letters, 10(10), 1998, pp. 1374-1376
We present a 16-channel waveguide grating router multifrequency laser
that can be modulated with a 250-MHz bandwidth, a 50-dB extinction rat
io, and constant single-mode behavior, We demonstrate a means for immu
nizing the single-mode lasing against unwanted backreflections from th
e integrated modulation amplifier, The laser is especially suitable fo
r fiber dispersion-map measurements.