A robustly stabilized communication
laser can output a multimode optical
signal remaining aligned to a coordinate of a dense
wavelength division
multiplexing (“DWDM”) grid while responding to a fluctuating condition or
random event, such as, without limitation,
exposure to a temperature fluctuation,
stray light, or
contamination. Responsive to the fluctuating condition, energy can transfer among individual
modes in a plurality of aligned longitudinal
modes.
Modes shifting towards a state of misalignment with the DWDM coordinate can attenuate, while
modes shifting towards a state of alignment can
gain energy. Fabrication processes and systems and
light management, such as
beam steering,
epoxy scaffolds, spectral adjustments,
mode matching,
thermal expansion control, alignment technology, etc. can facilitate nano-
scale control of
device parameters and can support low-cost fabrication.