Fast Tuning Control System Based on Series and Parallel Array Lasers

Abstract

The invention discloses a fast tuning control system based on series-parallel array lasers, which includes a central control module, a current stabilization module, a switch module, a temperature control module, a laser array module, and a power control module. Module, temperature control module, and switch module are electrically connected, the switch module is electrically connected to the laser array module, and the laser array module is electrically connected to the power control module; the central control module is used for sending current, channel selection, and temperature control information. The present invention can accurately provide working current to each channel of the laser array module, and synchronously open and close the channels according to the control signal, so as to complete the fast switching of the laser wavelength, thereby realizing the fast tunable wavelength of the outgoing signal; finally controlled by EDFA The output signal power of the laser can be tuned.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a fast tuning control system based on series-parallel array lasers. Background technique [0002] With Internet traffic growing geometrically and user demands constantly improving, the optical communication industry, which occupies an absolute dominant position in the communication field, is also facing pressure to upgrade technology and promote advanced industrial development: the rapid growth of big data requires more In the 5G era, high-performance optical modules that match high bandwidth are required at the base station, transmission network, and access network levels; in future network solutions, whether it is the expansion of data capacity or the improvement of network Flexibility, to achieve dynamic changes to the network architecture, requires the extensive use of wavelength-tunable semiconductor lasers in network equipment. Among them, fast tunable la...

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Problems solved by technology

External cavity feedback tunable lasers have narrow linewidth, good single-mode characteristics, and large tuning range, but are limited by the wavelength tuning method of mechanical tuning, and the tuning speed is slow; tunable light sources based on DFB lasers currently have a limited number of integrated channels , and the thermal equilibrium process of its thermal tuning method also determines its slow tuning speed; the DBR type tunable laser is tuned by current, and the tuning speed is fast, but its mode stability is not good due to the vernier effect; and the vertical cavity surface emission The laser switching speed is fast, but the single-mode characteristic is not good enough, the power is not high, and it is not suitable for long-distance communication networks

Using the traditional tunable laser principle, it is difficult to obtain a stable tunable laser with sub-microsecond time switching

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