Examples of 'bragg gratings' in a sentence
Meaning of "bragg gratings"
Bragg gratings: Optical devices that use a periodic change in the refractive index of an optical fiber to diffract light into specific wavelengths, often used in telecommunications and fiber optics
How to use "bragg gratings" in a sentence
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bragg gratings
Bragg gratings are made by periodically changing refractive index in the fiber material.
The production of demultiplexing Bragg gratings is now considered.
Bragg gratings having substantially uniform effective pitch along their lengths are known.
Application to the apodization of Bragg gratings.
One thus has two Bragg gratings mounted in opposition.
The array optical waveguide gratings are preferably Bragg gratings.
Holograms are Bragg gratings that are wavelength multiplexed in each microfiber.
It is also possible to replace the Bragg gratings by monomode couplers.
The fibre Bragg gratings have different grating periods.
The temperature sensor comprises one or more fibre Bragg gratings.
The response of the Bragg gratings to acoustic waves is measured.
Almost half of the fiber sensors currently being researched implement Bragg gratings.
Comparators other than Bragg gratings may also be employed.
Etched Bragg gratings generally enable high coupling coefficients to be obtained.
This probe comprises an extensometer based on an optical fibre with Bragg gratings.
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Two fibre Bragg gratings may be provided in the same length of fibre.
The etching depth of the two gratings of a set of Bragg gratings may be different.
The three Bragg gratings have identical lengths of the order of a few millimeters.
Gain flattening filters usually consist of Bragg gratings inscribed optically into optical fibers.
Tilted Bragg gratings can introduce propagation losses to one of the two polarization axes.
Such an optical fiber can have Bragg gratings distributed along its length.
The reinjecting devices located at the ends of the fibre may be volume Bragg gratings.
An optic fibre containing such Bragg gratings can thus be used as a distortion sensor.
Two Bragg gratings written into the fiber act as the mirrors of a conventional laser cavity.
Various extensometers that use optical fibers on which Bragg gratings are placed are already known.
The response of fibre Bragg gratings to external perturbations is linear and without hysteresis.
Another comparative example uses an excitation optical fiber having several long period Bragg gratings.
The set of refractive Bragg gratings therefore reflects the set of discrete wavelengths selectively.
A common example of this type utilizes Fiber Bragg Gratings.
Thus chromatic dispersion compensators using Bragg gratings may be inserted into the transmission line.
The Fiber Bragg Gratings are sensitive to mainly temperature and strain variations.
Also, several extensometers using Bragg gratings are already known.
Data for the fiber Bragg gratings inserted as cavity end mirrors in the numerical simulations.
In one embodiment, the reflector means comprise Bragg gratings.
We have appreciated that long Fibre Bragg Gratings can be used to address this problem.
Bragg gratings may be embedded within composite bars, based on the same solid transducer principle.
The transduction means 4 may also consist of Bragg gratings.
In a first step, bragg gratings were characterized and their thermal and strain sensitivities were determined.
In an embodiment, the filter comprises a plurality of concatenated slanted Bragg gratings.
These Bragg gratings are produced by laser in a single-mode fiber core.
In recent years, the making of Bragg gratings has undergone development.
Device as claimed in claim 4, wherein the selective reflectors comprise Bragg gratings.
By way of information, currently, Bragg gratings generally measure a few centimeters.
Optical add-drop multiplexer using optical circulators and photoinduced Bragg gratings.
It may comprise Bragg gratings formed in at least one solid medium ; or.
The system claimed in claim 1, wherein the reflector means comprise Bragg gratings.
In practice, the Bragg gratings have a reflection wavelength that depends on their temperature.
The invention relates to a photo-imprinting stand for the making of Bragg gratings.
Preferably, the fiber Bragg gratings intersect the neutral fiber of the rail.
According to a feature of the invention, the laser comprises one or more Bragg gratings.
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These sorts of gratings are described by a graph illustrated
Installation of air pipes and external gratings
These gratings are concave to focus these waves
