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2. Fiber Bragg grating - Wikipedia

   en.wikipedia.org/wiki/Fiber_Bragg_grating

   A fiber Bragg grating (FBG) is a type of distributed Bragg reflector constructed in a short segment of optical fiber that reflects particular wavelengths of light and transmits all others. This is achieved by creating a periodic variation in the refractive index of the fiber core, which generates a wavelength-specific dielectric mirror .

3. Addressed fiber Bragg structure - Wikipedia

   en.wikipedia.org/wiki/Addressed_fiber_Bragg...

   An addressed fiber Bragg structure can perform triple function in fiber-optic sensor systems: a sensor, a shaper of double-frequency probing radiation, and a multiplexor. The key feature of AFBS is that it enables the definition of its central wavelength without scanning its spectral response, as opposed to conventional fiber Bragg gratings ...

4. Long-period fiber grating - Wikipedia

   en.wikipedia.org/wiki/Long-period_fiber_grating

   Microbend gratings, which are antisymmetric with respect to the fiber axis, create a resonance between the core mode and the asymmetric LP1m modes of the core and the cladding. Long period grating has a wide variety of applications, including band-rejection filters, gain flattening filter and sensors.

5. List of sensors - Wikipedia

   en.wikipedia.org/wiki/List_of_sensors

   Sudden Motion Sensor; Tilt sensor; Tachometer; Ultrasonic thickness gauge; Ultra-wideband radar; ... Fiber Bragg grating; Fisheries acoustics; Image sensor; Image ...

6. Distributed Bragg reflector - Wikipedia

   en.wikipedia.org/wiki/Distributed_Bragg_reflector

   Time-resolved simulation of a pulse reflecting from a Bragg mirror. A distributed Bragg reflector (DBR) is a reflector used in waveguides, such as optical fibers.It is a structure formed from multiple layers of alternating materials with different refractive index, or by periodic variation of some characteristic (such as height) of a dielectric waveguide, resulting in periodic variation in the ...

7. Acousto-optic modulator - Wikipedia

   en.wikipedia.org/wiki/Acousto-optic_modulator

   An acousto-optic modulator (AOM), also called a Bragg cell or an acousto-optic deflector (AOD), uses the acousto-optic effect to diffract and shift the frequency of light using sound waves (usually at radio-frequency). They are used in lasers for Q-switching, telecommunications for signal modulation, and in spectroscopy for frequency control.