Compact, chip-integrated, 100X optical amplifier consumes only a constant~200 milliwatts, utilizing a resonant design

https://www.eurekalert.org/news-releases/1114304

"recycles light energy in circular loop increasing intensity... compatible with battery-powered electronics like smartphones/ laptops... broader bandwidth for greater data-carrying capacity without interference (adds minimal signal noise)... size: fits on fingertip... 100x (20 dB) amplification, broad spectrum bandwidth... data communications: increasing network speed/ efficiency, biosensing: highly sensitive medical diagnostic tools, light sources: advanced laser and imaging technologies"