optical length

optical length

[′äp·tə·kəl ′leŋkth]
(optics)
References in periodicals archive ?
We will use a harmonic voltage to charge the object, which leads to a varying optical length difference in the frequency range of the LIGO detection.
Then, we can obtain that the optical length of the 4 km path of the LIGO laser beam with 280 times reflections is increased due to the space polarization by [DELTA]L ~ [10.
In addition, to have a timely varying optical length difference in a specific range of 20-2000 Hz that LIGO can measure, we consider a harmonically varying voltage or power to charge the sphere, V(t) = [V.
LIGO uses the interference pattern where the beams combine to determine if the optical length down the two laser arms is changing.
Its large objective lens and shortened optical length eliminates the "tunnel vision" or tube-effect of other red dot sights.
In an installation requiring an optical length of 10 kin, it is possible to obtain 10,000 individual sensing points one meter apart.
Moreover, the fiber has to be passed through twice, because it is part of a huge interferometer; this is how the optical length of the entire link, which otherwise varies due to temperature fluctuations, is stabilized.
D] is proportional to the changing velocity of fiber optical length.
The second cavity is matched in optical length to the first and contains an optical fiber.
Based on an innovative methodology of theory and experiments, we aim to achieve 3Gb/s wireless coverage over 10m utilizing GI-MMF transmission at 1550nm, with the aid of a single mode fibre (SMF) to GI-MMF coupling scheme, for short area, indoor, optical lengths of the order of 100m or more.