A rz code duty ratio adjustment system based on time lens

Abstract

A time lens-based RZ code duty cycle adjustment system, including a signal generator and a time lens adjustment subsystem, the output of the signal generator is connected to the input end of the time lens adjustment subsystem, and in the signal generator, a duty cycle is generated The ratio is 50% of the zero-returning RZ signal; in the time lens adjustment subsystem, through the M-fold magnification, the duration of the high-level part in one period of the RZ signal covered by a pump light pulse is M-fold Stretching, by making the sequence of the pump light pulse and the RZ input signal completely correspond, so that each pump light pulse can just cover the high-level part of the corresponding RZ input signal, and the input signal passes through the time lens adjustment subsystem, through Controlling the magnification M realizes arbitrary adjustment of the duty cycle of the RZ input signal. The invention enables the adjustment of the duty ratio of the RZ signal to be completed in the optical domain without electro-optical conversion, and greatly simplifies the duty ratio adjustment system of the RZ code.

Description

technical field [0001] The invention relates to a time-lens-based RZ code duty ratio adjustment system Background technique [0002] With the rapid growth of data volume in the 5G era, with the continuous development of ultra-high-speed nonlinear optical signal processing technology, the traditional electrical signal processing technology has approached the electron rate bottleneck, and 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 done directly in the optical fiber using the all-optical processing system, without the need for optical / electrical and electrical / optical conversion, so that the pulse The transfer rate is improved. [0003] A time lens refers to an optical device that can produce a secondary time phase shift for an optical signal. There are various implem...

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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