asteroza + waveguide   19

OSA | Monolithic ultra-high-Q lithium niobate microring resonator
so lithium niobate makes for great resonators for fiber optic networks, but is chemically inert so you can't etch it easily. Now, it looks like they've achieved usable dry plasma etching to make waveguides/resonators.
lithium  niobate  fiber  optic  resonator  waveguide  optics  plasma  dry  etching  materials  science  research  technology 
january 2018 by asteroza
Breaking Lorentz reciprocity to overcome the time-bandwidth limit in physics and engineering | Science
Telecomms just got a huge breakthrough. But apparently radar guys in the 40's knew about using non-reciprocal resonators to keep EM from pushing back into waveform generators, but never published?
asymmetric  nonreciprocal  high  bandwidth  resonant  waveguide  RF  radio  physics  materials  science  engineering  research  technology  telecommunications  telecomms  antenna 
june 2017 by asteroza
OSA | Luminescent detector for free-space optical communication
Facebook improving fresspace lasercomm receivers by doping optical waveguides with frequency shifter dyes to catch scintillation diffracted laser light for a wide field of view.
scintillation  effect  compensation  flourescence  flourescent  dye  doping  luminescent  concentrator  optical  fiber  wave  guide  waveguide  detector  large  FoV  optics  materials  science  research  technology  facebook  freespace  laser  communications  lasercomm  receiver  Delicious 
july 2016 by asteroza
[1404.5293] Collection of remote optical signals by air waveguides
So, basically jacketing a laser beam with a concentric pulse laser to form an air waveguide works. Which seems simpler than flat out co-beaming a pulse laser to explode the air out of the way.
air  waveguide  laser  optics  research  technology  high  power  pulse  Delicious 
july 2014 by asteroza
Point of Light | Caltech
By proxy, exceeding the diffraction limit of visible wavelength light using surface plasmon polaritons on a nanoscale silicon dioxide waveguide.
optics  nanotechnology  technology  research  science  materials  physics  dioxide  silicon  waveguide  focus  limit  diffraction  light  visible  polariton  plasmon  surface  SPP  Delicious 
december 2012 by asteroza
semiconductor nanowire ultraviolet laser technology Could Kill Viruses and Improve DVDs
Hrm, it just so happens that certain frequencies of UV light can cause a resonant breakdown of CO2 to help in forming a plasma...
UV  zinc  oxide  nanowire  waveguide  electrically  pumped  Fabry-Perot  laser  diode  semiconductor  materials  science  research  technology  nanotechnology  Delicious 
july 2011 by asteroza
Organic Solar Concentrators — Soft Semiconductor Group
Work on using luminescent dyes to redirect solar energy to PV cells on the edge of a flat plate waveguide.
organic  solar  concentrator  PV  design  optics  flat  plate  waveguide  dye  luminescent  LSC  power  generator  green  energy  thin  film  materials  science  research  Delicious 
june 2011 by asteroza

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