High power operation of widely tunable 1.55 µmdistributed Bragg reflector laser

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