Fast Tuning Control System Based on Series and Parallel Array Lasers

A tuning control and laser technology, applied in the field of communication, can solve problems such as unsuitable for long-distance communication networks, poor mode stability, and insufficient single-mode characteristics, so as to improve the range and wavelength switching speed and realize large-scale The effect of fast and stable tuning, high flexibility and stability

Active Publication Date: 2021-11-02
NANJING UNIV
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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 tu

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  • Fast Tuning Control System Based on Series and Parallel Array Lasers
  • Fast Tuning Control System Based on Series and Parallel Array Lasers
  • Fast Tuning Control System Based on Series and Parallel Array Lasers

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[0038] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0039] like figure 2 As shown, it is a schematic diagram of a 4×4 series-parallel tunable light source chip, that is, how many channels the tunable light source has, how many DFB lasers are designed in the series-parallel chip, and what wavelength is required by the external equipment, the light source will light up the corresponding wavelength The DFB laser can achieve wavelength tuning. The tuning process is realized by switching the light source without additional changes in current and temperature. The number of DFB laser chips determines the number of channels and tuning range of the tunable light source.

[0040]The light source chip integrates 16 lasers of different wavelengths on the same optical chip, and selects one of the lasers to work through the control circuit, which is completed by the circuit part; in the laser array structu...

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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...

Claims

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Application Information

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IPC IPC(8): H01S3/102H01S3/131
CPCH01S3/102H01S3/1028H01S3/131H01S3/1317
Inventor 方涛殷硕方昕奕林康龙刘奎戴攀陈向飞
Owner NANJING UNIV
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