Tunable laser array

A wearable mobile electronic device comprising:

• a support structure;
• a plurality of lasers disposed on the support structure including at least first and second lasers having center emission wavelengths that are separated by at least a specified minimum wavelength;
• and
• at least one coupler/splitter disposed on the support structure,
• wherein emitted light from the first laser at a first wavelength and emitted light from the second laser at a second, different wavelength are combined and then split at the coupler/splitter, and
• wherein the plurality of lasers have at least a minimum level of thermal resistance.

A method of manufacturing comprising:

• assembling a plurality of lasers onto a support structure, the plurality of lasers including at least first and second lasers having center emission wavelengths that are separated by at least a specified minimum wavelength;
• and
• assembling at least one coupler/splitter onto the support structure,
• wherein emitted light from the first laser at a first wavelength and emitted light from the second laser at a second, different wavelength are combined and then split at the coupler/splitter, and
• wherein the plurality of lasers have at least a minimum level of thermal resistance.