Figure 5
From: High channel count and high precision channel spacing multi-wavelength laser array for future PICs

(a) The lasing wavelengths of 6 laser arrays with wavelength spacing of 0.8 nm. (b) The maximum wavelength differences for the 15 channels of the 6 randomly selected laser arrays. The mean value is 0.788 nm (±0.394 nm) and standard deviation is 0.222 nm.