A method for generating continuous high-speed pulses based on injection locking

Abstract

The invention discloses a method for generating continuous high-speed pulses based on injection locking. In the method, an adjustable laser device, a first polarization controller, a microwave source,a microwave amplifier, a Mach-Zehnder modulator, a variable optical attenuator, a second polarization controller, an optical circulator and a DFB laser device are used, wherein output light of the adjustable laser device enters the Mach-Zehnder modulator after passing through the first polarization controller, and is subjected to strength modulation by using a 10GHz sinusoidal signal; then the modulated optical signal enters the optical circulator via the variable optical attenuator and the second polarization controller, and is injected and locked to a first-order sideband of the modulated optical signal by the DFB laser device without an isolator; therefore, phase correlation between carrier and each sideband is achieved, so that a four-wave mixing effect is generated, and thus output spectrum is expanded, that is to say a high order sideband component appears, and the continuous high-speed pulses with repetition frequency of 10GHz and pulse width of 25ps are generated. The method for generating the continuous high-speed pulses provided by the invention has the advantages of simple experimental facility and adjustable repetition frequency.

Description

technical field [0001] The invention relates to a method for generating continuous high-speed pulses based on injection locking. Background technique [0002] With the rapid growth of communication network scale and data volume, the communication system not only requires ultra-fast transmission speed and ultra-long transmission distance, but also requires ultra-large transmission capacity. Unlike traditional electrical multiplexing, which has electron mobility limitations, all-optical networks perform photoelectric conversion and electro-optical conversion only when signals enter and exit the network, which improves the transmission rate and network resource utilization. The optical wavelength division multiplexing technology, optical time division multiplexing technology and high-speed optical signal processing system in the all-optical network all have an urgent demand for high repetition rate, narrow pulse width and optical pulse with good stability. As a key part that d...

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Problems solved by technology

[0004] Aiming at the above-mentioned prior art, the present invention provides a method for generating continuous high-speed pulses based on injection locking, which solves the problems of complex experimental equipment, high cost and cumbersome operation in the existing method for generating high-speed pulses

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