All-optical buffer based on polarization characteristics of stimulated Brillouin gain

Abstract

The invention provides an all-optical buffer based on the polarization characteristic of stimulated Brillouin gain. In the all-optical buffer, the first optical fiber coupler, the first optical isolator, the first optical fiber, the first optical circulator, the optical attenuator, the second optical isolator, the second optical fiber, the second optical circulator, A polarization state port of the optical polarization beam splitter, an optical amplifier and an optical filter are closed and connected to form an optical ring cavity. The pump light source is connected to two polarization controllers through a second fiber coupler, and the two polarization controllers are connected to two optical ring lines respectively. The signal light is transmitted from the first optical fiber coupler to the second optical circulator. When the pump light source is turned off, the signal light is output from one polarization state port; when the pump light source is turned on, the pump light enters the two optical fibers respectively for use The polarization state of the signal light is deflected by 90 degrees, and the signal light is output from another polarization state port. The invention can realize the independent control of buffer delay of multi-channel signals in the same buffer path.

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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