Photonic crystal based rotation sensor

Details Photonic crystal based rotation sensor Photonic crystal based rotation sensor

2011-04-12

2011-04-12

Connolly, Patrick J (Department: 2877)

Optics: measuring and testing

By light interference

Rotation rate

Reexamination Certificate

active

07924427

ABSTRACT:
A gyroscope having photonic crystals for sensing rotation uses the Sagnac effect to determine angular motion. The gyroscope comprises a photonic crystal capable of guiding counter-propagating light beams in a closed path. A light source, coupling, and detection apparatus permits detection of phase changes between the counter-propagating beams, thereby permitting measurement of angular rotation. The photonic crystal comprises a periodic structure of pillars and voids which creates a photonic bandgap waveguide within which light waves in the proper wavelength range propagate with low loss.

REFERENCES:
patent: 5526449 (1996-06-01), Meade et al.
patent: 5781301 (1998-07-01), Ruffin
patent: 6566155 (2003-05-01), Numai
patent: 6885456 (2005-04-01), Hashimoto
patent: 2003/0011775 (2003-01-01), Soljacic et al.
patent: 2003/0030814 (2003-02-01), Osinski et al.
patent: 2004/0263856 (2004-12-01), Willig et al.
patent: 2006/0103851 (2006-05-01), Nathan et al.
patent: 2006/0145063 (2006-07-01), Steinberg et al.
patent: 2007/0263224 (2007-11-01), Keyser et al.
patent: 1 391 693 (2004-02-01), None
Steinberg, Ben Zion; “Rotating Photonic Crystals: A Medium for Compact Optical Gyroscopes”; Physical Review E 71, 056621; The American Physical Society; pp. 056621-1-056621-7; May 2005.

Affiliated with

Also associated with

Rating

Photonic crystal based rotation sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photonic crystal based rotation sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photonic crystal based rotation sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2680717