RZ code duty ratio adjusting system based on time lens

Abstract

The invention provides an RZ code duty ratio adjusting system based on a time lens. The system comprises a signal generator and a time lens adjusting subsystem, the output end of the signal generatoris connected with the input end of the time lens adjusting subsystem, and a return-to-zero RZ signal with the duty ratio of 50% is generated in the signal generator; in the time lens adjusting subsystem, the duration of a high-level part of an RZ signal covered by a pump light pulse in a period is broadened by M times through M times of magnification times, and the pump light pulse is enabled to completely correspond to the sequence of an RZ input signal, each pump light pulse can just cover the high-level part of the RZ input signal corresponding to the pump light pulse, the input signal passes through the time lens adjusting subsystem, and the duty ratio of the RZ input signal can be adjusted at will by controlling the amplification factor M. According to the invention, the duty ratio adjustment of the RZ signal is completed in the optical domain, and the electro-optical conversion is not needed, so that the RZ code duty ratio adjusting system can be greatly simplified.

Description

technical field [0001] The invention relates to a time lens-based RZ code duty ratio adjustment system Background technique [0002] In the 5G era, the amount of data is growing rapidly. With the continuous development of ultra-high-speed nonlinear optical signal processing technology, traditional electrical signal processing technology has approached the bottleneck of electronic speed. The use of all-optical processing technology to replace traditional electronics has aroused widespread interest. All-optical communication will be the main communication method in the future, and the adjustment of the duty cycle of the RZ code can also be directly completed in the optical fiber using an all-optical processing system, without the need for optical / electrical and electrical / optical conversion, so that the pulse The transfer rate has been improved. [0003] A time lens refers to an optical device that can generate a secondary time phase shift for an optical signal. There are var...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the electro-optical and photoelectric conversion necessary to control the duty cycle of the signal through the electronic control unit and the complex and cumbersome shortcomings of the entire electronic system in the prior art, the present invention provides an RZ code duty cycle based on a time lens. The air ratio adjustment system not only greatly simplifies the whole system, but also greatly improves the processing rate

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