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Photonic Crystal Research

ab-initio.mit.edu/photons/

Photonic Crystal Research Photonic Crystal Research About half of our group is dedicated to working on problems related to a new kind of material, photonic crystals (also known as photonic band-gap materials ). Photonic crystals are periodic ...


Waveguide Bends

ab-initio.mit.edu/photons/bends.html

Waveguide Bends Waveguide Bends in Photonic Crystals In conventional waveguides, such as fiber-optic cables, light is confined by total internal reflection (also known as index confinement, a more accurate term when the guide diameter is on ...


Resonant Cavities

ab-initio.mit.edu/photons/resonant-cavities.html

Resonant Cavities Resonant Cavities in Photonic Crystals When a point defect is created in a photonic crystal, it is possible for that defect to pull a light mode into the band gap. Be-cause such a state is forbidden from propagating in the ...


Photonic Micropolis

ab-initio.mit.edu/photons/micropolis.html

Photonic Micropolis hi-res version The Photonic Micropolis The picture above depicts a "photonic micropolis," a rather fanciful collage of many different photonic crystal devices. Rather than trying to ascribe any collective meaning to this ...


Photonic Crystals Tutorial

ab-initio.mit.edu/photons/tutorial/

... materials are from my short course (SC608) offered periodically at the SPIE Photonics conferences (Photonics West, Photonics North, Optics & Photonics, etc.): Photonic Cr-ystals: A Crash Course : PDF (39MB) and PowerPoint (46MB) slides. ...


Channel-Drop Filters

ab-initio.mit.edu/photons/ch-drop.html

... and routed to its destination, and to separate a conversation you need a channel-drop filter. It turns out that by using photonic crystals, one can construct a perfect channel drop filter--that is, one which reroutes the desired channel ...


One-Dimensional Crystals

ab-initio.mit.edu/photons/1d-crystal.html

One-Dimensional Crystals One-Dimensional Photonic Crystals Below is an SEM image of a air bridge structure fabricated (and imaged) by our colleagues K. Y. Lim, G. Petrich, and L. Kolodziejski in CMSE. This is a conventional waveguide, ...


Three-Dimensional Photonic Crystal

ab-initio.mit.edu/photons/3d-crystal.html

Three-Dimensional Photonic Crystal Three-Dimensional Photonic Crystals The ideal str-ucture to have is a three-dimensionally periodic photonic crystal (simply referred to here as a three-dimensional photonic crystal) with a full band-gap in ...


Waveguide Crossings

ab-initio.mit.edu/photons/cross.html

... a one-dimensional photonic crystal that can confine a cavity mode. Here, the crosstalk is only 0.08%, versus 7% crosstalk in the same intersection without holes. You can also dow-nload this movie (181 kB). Because there is no photonic ...


The Color of Shock Waves in Photonic Crystals

ab-initio.mit.edu/photons/shocked_PC/shocked_PC.html

The Color of Shock Waves in Photonic Crystals The Color of Shock Waves in Photonic Cr-ystals Evan J. Reed, Marin Soljacic, J. D. Joannopoulos, " Color of shock waves in phot-onic crystals, " Phys. Rev. Lett. 90 , 203904 (2003). A preprint can ...


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