Semiconductor optical amplifier-based external injection type linear cavity actively mode-locked fiber laser

Abstract

The invention relates to a semiconductor optical amplifier-based external injection type linear cavity actively mode-locked fiber laser. The laser comprises a wavelength adjustable continuous laser, a photoelectric modulator, an external radio frequency source, a coupler, a linear cavity and a pulse compressor, wherein the adjustable continuous laser and the external radio frequency source are connected to the photoelectric modulator; the photoelectric modulator is connected to the coupler; and the coupler is connected with the linear cavity and is connected to the pulse compressor. The invention provides the semiconductor optical amplifier-based external injection type linear cavity actively mode-locked fiber laser, which has the characteristics of simple structure, easy manufacturing, short cavity length, strong system stability and the capacity of flexibly changing pulse repeating frequency and also has the function of continuously tuning the wavelength of a C waveband.

Description

technical field [0001] The invention relates to a mode-locked laser based on a semiconductor optical amplifier, in particular to an external injection linear cavity active mode-locked fiber laser based on a semiconductor optical amplifier. Background technique [0002] The wavelength-tunable high repetition rate ultrashort pulse laser is a key technology for realizing ultra-high-speed, large-capacity all-optical communication systems and networks. It has very important application value in wavelength division multiplexing (WDM), optical time division multiplexing (OTDM), WDM / OTDM hybrid multiplexing system and ultra-high-speed all-optical signal processing. In practical applications, the ultrashort optical pulse source is required to have the characteristics of small size, simple structure, high repetition rate, low jitter, good versatility, low cost and high reliability. At the same time, if functions such as central wavelength adjustment and repetition frequency adjustmen...

AI Technical Summary

Problems solved by technology

Semiconductor integrated active mode-locked lasers have the advantages of small size and stable working performance, but their production process requirements are high, the output power of the laser is low, and the wavelength adjustment range is narrow. control

Due to the shortcomings of these existing active lasers, their application range in the field of optical communication is limited, especially in the rapidly developing field of high-speed and large-capacity optical communication.

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