Singlemode operation with an output power of up to 100mW is reported f
or the first time for InGaAsP/InP DBR lasers. These devices exhibiting
a record 17nm tuning range, have been realised using a three-step MOV
PE process. The output power variations under tuning are limited to si
milar to 1.5dB, and the tuning range remains quasi-constant with outpu
t power.