Integrated chaotic laser with double-feedback light-adding injection structure

Abstract

The invention relates to an integrated chaotic laser with a double-feedback light-adding injection structure. The integrated chaotic laser comprises two DFB laser chips, two heat sinks, two semiconductor chilling plates, a double-reflection transmission mirror, a cushion block and a lens optical fiber, wherein the two DFB laser chips and the double-reflection transmission mirror form the double-feedback light-adding injection structure, so that the chaotic bandwidth of an integrated device can be improved, and a function of spectrum shaping is achieved. Meanwhile, a ratio of the power of the disturbance light to the power of the chip output light can be changed by adjusting the bias currents of the two laser chips respectively, and the chaotic laser can be generated more easily. Furthermore, the integrated chaotic laser with the double-feedback light-adding injection structure is an existing commercial device and can be fixed in a common commercial 14-pin butterfly-shaped laser tube shell, so that the volume of a chaotic source is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of integrated chaotic lasers, in particular to an integrated chaotic laser with a double feedback and optical injection structure. Background technique [0002] Chaotic lasers are widely used due to their characteristics of randomness, initial value sensitivity, and wide frequency spectrum. The traditional chaotic laser sources are mostly built on the experimental bench using semiconductor lasers combined with various external discrete optical components, which are bulky, easily affected by the environment, and have unstable output. In order to promote the practicality and industrialization of chaotic laser sources, in recent years, the development of photon-integrated chaotic semiconductor lasers with small size, stable performance and low cost has developed rapidly. [0003] In 2008, Argyris, University of Athens, Greece, and others developed a monolithic integrated chaotic semiconductor laser chip consisting of a ...

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Problems solved by technology

However, the above two patent applications still adopt a mixed perturbation structure with two degrees of freedom, and the output laser chaotic bandwidth is low. Moreover, since the reflectivity of the transflective film or transflective mirror in these two patents is fixed, the perturbed light The ratio of the power of the laser to the power of the chip output light is also fixed, and this parameter is crucial to whether chaotic light can be generated. In the actual production of chaotic lasers, a large number of experiments are required to determine the reflectivity that can generate chaotic light. And the operation in production needs to be extremely precise; and the above two patents are difficult to achieve high-precision adjustment of the ratio of the power of the disturbance light to the power of the chip output light, so the application is greatly limited

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