Patent ID: 8837536

Claim:
A method comprising: producing a light beam; controlling a bandwidth of the produced light beam within a first target range of bandwidths including activating and controlling a first bandwidth actuation system connected to a first optical feature optically coupled to the produced light beam; controlling a bandwidth of the produced light beam within a second target range of bandwidths including activating and controlling a second bandwidth actuation system connected to a second optical feature optically coupled to the produced light beam; and switching between activating and controlling the first bandwidth actuation system and activating and controlling the second bandwidth actuation system independently and separately of activating and controlling the first bandwidth actuation system based on a provided bandwidth measurement and a selected target bandwidth; wherein: the second target range of bandwidths is distinct from the first target range of bandwidths, only the first bandwidth actuation system is used to control the bandwidth of the produced light beam within the first target range of bandwidths, and only the second bandwidth actuation system is used to control the bandwidth of the produced light beam within the second target range of bandwidths.