Aam. Staring et al., WAVELENGTH-INDEPENDENT OUTPUT POWER FROM AN INJECTION-TUNABLE DBR LASER, IEEE photonics technology letters, 6(2), 1994, pp. 147-149
Injection-tunable three-section Distributed Reflector lasers emitting
near 1.55 mum have been fabricated employing bulk 1.48-mum-bandgap InG
aAsP in the tuning layer of the phase and Bragg sections. The gain in
this material compensates for the increased absorption loss during tun
ing, which results in a nearly wavelength-independent optical output p
ower. The maximum obtained output power is 28 mW ex facet, with a spec
tral linewidth around 5 MHz.