Sagnac effect


Also found in: Wikipedia.

Sagnac effect

[′sän·yäk i‚fekt]
(optics)
The shift in interference fringes from two coherent light beams traveling in opposite directions around a ring when the ring is rotated about an axis perpendicular to the ring.
Mentioned in ?
References in periodicals archive ?
We will use this new light-matter interface to build a hybrid quantum gyroscope where the optical Sagnac effect in a photonic integrated circuit is enhanced by slow light in a Bose-Einstein condensate strongly coupled to it.
Both use the Sagnac effect, which basically says that rotation of a closed optical path will affect the interference between two counterrotating light beams.
The synchronization problem is partly a result of the Sagnac effect, a phenomenon that causes clocks in a rotating system (in this case, the earth) to be out of sync with one another when viewed from a stationary frame.
After introducing the general principles of optical gyroscopes based on a recirculating Sagnac effect, the technical guide explains the solid state configuration of optical fiber gyroscopes, the reciprocity of a fiber ring interferometer, the behavior of polarization maintaining fibers, and closed-loop operation methods to linearize the scale factor.
Besides these he was the first person among the scientists, who had registered the Sagnac effect at radiowaves.
This is the Sagnac effect, a piece of physics so obscure that it does not even have an index entry in the 15-volume McGraw-Hill Encyclopedia of Science and Technology.
Read more on the Sagnac effect and explanations of it in my recent papers [12,13].
The Sagnac interferometer is based on the Sagnac effect, reported by G.
On the other hand, periodic boundary conditions or close space-time topology, such as the Sagnac effect [3] where two opposite light beams travel in different time intervals the same closed path on a rotating disk, as well as the twin paradox, leads to preferred frame effects.
The Yilmaz equations contain the correct terms, and they have been applied with success to various vexing problems, for example the precession of Mercury's perihelion, lunar laser ranging measurements, the flying of atomic clocks in aircraft, the relativistic behaviour of clocks in the GPS, and the predicted Sagnac effect in the one-way speed of light on a rotating table.
The authors have organized the main body of their text into ten chapters covering quantum field theory, path integral formulation, supersymmetric quantum mechanics, coherent and squeezed states, BerryAEs phase, Aharonov-Bohm, and Sagnac effects, phase space picture and canonical transformations, and a wide variety of other related subjects.