A high-power tunable chaotic laser light source device

Abstract

The invention belongs to the technical field of chaotic lasers, and discloses a high-power tunable chaotic laser light source device, including a tunable DBR laser, an optical attenuator, a tunable laser, a first optical coupler, a single-mode fiber, a fiber Bragg grating, a first Two optical couplers, broadband dielectric film mirrors; the tunable DBR laser is connected to one end of the optical attenuator, the other end of the optical attenuator is connected to the first port of the first optical coupler, and the tunable laser is connected to the first optical The second port of the coupler is connected, and the common port of the first optical coupler is connected to the single-mode fiber and the fiber Bragg grating in sequence, and then connected to the common port of the second optical coupler, and the first port of the second optical coupler is reflected by the broadband dielectric film The mirror is connected, and the second port is used to output the amplified chaotic laser; the invention can realize high-power tunable chaotic laser output in the order of 100 watts, has a large tunable range, good time domain stability, and good beam quality.

Description

technical field [0001] The invention belongs to the field of chaotic lasers, in particular to a high-power tunable chaotic laser light source device. Background technique [0002] Chaotic laser has wide-spectrum noise-like characteristics and high concealment. It is widely used in secure communication, high-speed random number generation, laser ranging, and optical fiber network fault detection and other fields. However, its output power is generally very small, only on the order of milliwatts, which greatly limits its application development. At present, erbium-doped fiber amplifier (EDFA) is the most common chaotic laser amplification device, which can amplify signal light with a bandwidth of 30nm, and the output power is 10mW~20W. However, due to the influence of erbium ion gain saturation, it is difficult to further amplify the chaotic optical signal (patent number is CN201720578585.4), and the amplified spontaneous emission of EDFA will affect the signal-to-noise ratio...

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Problems solved by technology

However, due to the influence of erbium ion gain saturation, it is difficult to further amplify the chaotic optical signal (patent number is CN201720578585.4), and the amplified spontaneous emission of EDFA will affect the signal-to-noise ratio of the output signal light

In addition, in chaotic secure communication, it is hoped that the central wavelength of the chaotic carrier wave can be tuned in a wide range. However, the central wavelength of the chaotic laser can only be adjusted within a small range due to the limitation of the gain and bandwidth.

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