All-optical buffer based on stimulated Brillouin gain polarization characteristics

Abstract

The invention provides an all-optical buffer based on stimulated Brillouin gain polarization characteristics. In the all-optical buffer, a first optical fiber coupler, a first optical isolator, a first optical fiber, a first optical circulator, an optical attenuator, a second optical isolator, a second optical fiber, a second optical circulator, a polarization state port of an optical polarization beam splitter, an optical amplifier and an optical filter are in closed connection to form an optical circular cavity; a pump light source is connected to two polarization controllers through a second optical fiber coupler; the two polarization controllers are respectively connected to the two optical circulators; signal light is transmitted from the first optical fiber coupler to the second optical circulator; when the pump light source is closed, the signal light is output from the polarization state port; when the pump light source is opened, pump light respectively enters the two optical fibers so as to cause the polarization state of the signal light to deflect for 90 degrees; and the signal light is output from another polarization state port. According to the all-optical buffer provided in the invention, the buffer delay of multi-way signals on the same buffer path can be independently controlled.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an all-optical buffer based on the polarization characteristic of stimulated Brillouin gain. Background technique [0002] All-optical packet switching is one of the preferred solutions for the next generation optical network switching technology, and all-optical buffer is the key technology to realize all-optical packet switching. The all-optical buffer can complete the storage of data packets in the optical domain without undergoing optical-electrical-optical conversion, so it can greatly improve the data throughput of optical switching nodes and effectively reduce energy consumption. , the key to contention resolution and traffic shaping. [0003] Since photons are bosons, they cannot be stored perfectly still in a medium. At present, there are two ways to realize all-optical caching: slow-light type and delay-type. The slow-light type all-optical cache is real...

AI Technical Summary

Problems solved by technology

Each buffer in the optical buffer can store an optical packet information independently, which is easy to expand, but the control of optical power requires precision adjustment to realize the π phase shift between the two signals, which increases the difficulty of operation

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