Adjustable light pulse time-delay device with wide bandwidth and multiple gains based on stimulated brillouin scatter

Abstract

A pulse delay device of adjustable light based on multigrain spectral band width excited by Brillouin scattering is prepared as connecting laser source to pumping light source being connected to adjustable attenuator, connecting said attenuator to the second optical fiber circulator (TSOFC) being connected to the second single-mode optical fiber, connecting laser source to detection pulse light source being connected to optical fiber isolator, connecting said isolator to the third polarized controller being connected to the second single-mode optical fiber, and using the third port of TSOFC as output end.

Description

Technical field:

[0001] The invention relates to an optical pulse delay device in an optical fiber. Background technique:

[0002] At present, the optical pulse delayer developed by using the slow light principle of optical pulse transmission in the medium has aroused people's widespread interest. Its potential applications include quantum computers, all-optical communication, data processing and other fields. It is particularly important to realize slow light in optical fibers, because it matches the current optical communication system, so it is more practical. Recently, the use of stimulated Brillouin scattering to realize the slow optical propagation of optical pulses in optical fibers has attracted extensive attention.

[0003] However, the Brillouin gain bandwidth in the optical fiber is narrow, generally only 30-50MHz, so the pulse light with a narrow pulse bandwidth (less than 15ns) will be significantly distorted when the pulse light is amplified, and when the ban...

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