Nikolay Primerov

Cette personne a quitté l’EPFL

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Publications associées (27)

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High Spatial and Spectral Resolution Long-Range Sensing Using Brillouin Echoes

Luc Thévenaz, Sang Hoon Chin, Kwang-Yong Song, Nikolay Primerov

While classical configurations have a practical spatial resolution of 1 meter, novel approaches have been demonstrated that can overcome this limit to offer spatial resolutions in the centimetre range, while preserving full measurand accuracy. ...

Optical Society of America2011

True Time Reversal via Dynamic Brillouin Gratings in Polarization Maintaining Fibers

Luc Thévenaz, Sang Hoon Chin, Kwang-Yong Song, Nikolay Primerov

A novel technique to realize true time reversal of an optical signal, using dynamic Brillouin gratings in high-birefringence fibers, is proposed. A data sequence of optical pulses with 2-ns duration was efficiently time-reversed. ...

Optical Society of America2010

Long Variable Delay and Distributed Sensing Using Stationary and Localized Brillouin Dynamic Gratings

Luc Thévenaz, Nikolay Primerov

Stationary and localized Brillouin dynamic gratings are generated using phase modulation of both pump waves by a pseudo-random bit sequence. The gratings are applied to long variable delay of pulses and to cm-level distributed sensing ...

Optical Society of America2012

All-optical calculus based on dynamic Brillouin grating reflectors in optical fibers

Luc Thévenaz, Sang Hoon Chin, Nikolay Primerov

We experimentally demonstrate that all-optical signal calculus can be realized based on dynamic Brillouin gratings in optical fibers. Temporal integration and first-order differentiation were performed for optical pulse with various waveforms. ...

Optical Society of America2011

Movable dynamic grating-based optical delay line in polarization maintaining fibers

Luc Thévenaz, Sang Hoon Chin, Nikolay Primerov

A new type of all optical delay line is realized in fibers. A local dynamic grating reflector can be generated everywhere in the fiber, demonstrating >1 us delay for 650 ps pulses. ...

Optical Society of America2011

Ultra Wide Range Tunable Delay Line Using Dynamic Grating Reflectors in Optical Fibers

Luc Thévenaz, Sang Hoon Chin, Kwang-Yong Song, Nikolay Primerov

We experimentally demonstrate a novel technique to realize a tunable delay line based on dynamic Brillouin gratings in a high birefringence fiber. A 8ns pulse signal is continuously delayed up to 184ns with minor distortion. ...

Optical Society of America2010

Advanced Brillouin-based distributed optical fibre sensors with sub-meter scale spatial resolution

Luc Thévenaz, Sang Hoon Chin, Kwang-Yong Song, Nikolay Primerov

Classical configurations of Brillouin distributed optical fibre sensors show a spatial resolution limited by the phonon lifetime to 1 meter. Novel approaches can substantially overcome this limit through the prior activation of the acoustic wave. ...

IEEE2010