What You'll Find Inside
MicroLEDs vs. Lasers: The Linewidth Tradeoff: An explanation of how spectral purity (linewidth) dictates speed limits for optical links.
Lumentum, Coherent, and DFB Lasers: Analysis of DFB laser dominance in 200G/lane EMLs (Lumentum) and the competition for Continuous-Wave (CW) lasers in Co-Packaged Optics (CPO).
Laser Linewidth, RIN, and Power: Definitions of Linewidth (FWHM) and Relative Intensity Noise (RIN), including a comparison of Lumentum and Coherent CPO laser specs.
The Case for MicroLEDs: Benefits and Challenges: Review of industry players (Microsoft, Avicena, Credo) and the MicroLED's "wide-but-slow" array approach, with details on benefits (low power, reliability) and system challenges (focusing optics, electrical gearboxing).
Why linewidth matters for data rates: A mathematical and numerical demonstration of how chromatic dispersion limits data rates, contrasting MicroLED (40ps pulse spread) versus DFB laser (0.001ps pulse spread) performance.