Digital optical pulse generation device using piezoelectric ceramics feedback control

A piezoelectric ceramic and feedback control technology, which is applied in circuits, lasers, electrical components, etc., can solve the problems of long active mode-locked fiber laser cavity, poor stability of output pulse repetition frequency, and poor stability of output optical pulses. The effect of pulse optimization, high anti-damage threshold, and wide bandwidth response wavelength range

Inactive Publication Date: 2017-08-25
JILIN UNIV
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Problems solved by technology

[0005] However, the output laser spectrum of active mode-locked fiber lasers is relatively narrow, and it is difficult to obtain ultra-narrow pulses. Moreover, the cavity length of active mode-locked fiber lasers is generally long, which is easily affected by the outside world, resulting in poor stability.
[0006] Passively mode-locked fiber laser has simple structure, low cost and high reliability. It is a real all-fiber device. Using the nonlinear effect of fiber, it can generate the shortest optical pulse, but its output pulse repetition frequency has poor stability and cannot be adjusted externally.
[0007] To sum up, the existing active or passive mode-locked fiber laser systems have their own inherent shortcomings, especially because the existing mode-locked fiber laser systems do not adopt effective automatic control, which makes the stability of the output optical pulse poor

Method used

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Embodiment 1

[0022] Embodiment 1: Concrete structure of the present invention

[0023] The structure of a digital optical pulse generator using piezoelectric ceramic feedback control according to the present invention is shown in the attached figure 1 As shown, its structure is that the pump light source 1 (980nm laser, the maximum output power is 1W) is connected to the 980nm end of the wavelength division multiplexer 2 (980 / 1550nm wavelength division multiplexer), and the wavelength division multiplexer 2 The 1550nm end is connected to the input end of the first optical coupler 3 (1×2 standard single-mode optical coupler with a splitting ratio of 10:90); the 10% output end of the first optical coupler 3 is connected to the first polarization controller 4 One end of the (pigtail type mechanical polarization controller) is connected, and the optical pulse of its output continues to run in the resonator of the active mode-locked fiber laser, and the 90% output end of the first optical coup...

Embodiment 2

[0025] Embodiment 2 Working process of the present invention and the effect of each main component

[0026] attached figure 1 In the structure shown, the pumping light source 1 is used as the laser pumping source of the whole system, and the pumping light source 1 enters the system through the wavelength division multiplexer 2; the first optical coupler 3 with a splitting ratio of 10:90 connects The running laser is divided into two parts, one part (90%) is output to the third optical coupler 11, and the other part (10%) continues to run in the resonator of the active mode-locked fiber laser; the third light splitting ratio is 40:60 The coupler 11 divides the laser light output by the first optical coupler 3 into two parts, one part (60%) is used as the laser output of the whole system, and the other part (40%) is output to the fourth optical coupler 12 as a feedback signal of the system; The first polarization controller 4 and the second polarization controller 28 are used ...

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Abstract

The invention discloses a digital optical pulse generation device using piezoelectric ceramics feedback control and belongs to the optical communication device technology field. A main structure comprises an active mode-locking fiber laser resonant cavity formed by a pump light source (1), a wavelength division multiplexer (2), a first optical coupler (3), a first polarization controller (4) and the like, a passive mode-locking fiber laser system formed by a dispersion compensation fiber (25), a graphene saturable absorber (27) and other devices, and a pulse optimization system formed by two automatic feedback control loops. In the invention, a main and passive mixing mode locking technology is adopted; an optical detector receiving portion is used to output laser and a single-chip microcomputer is used to process a received signal; piezoelectric ceramics is controlled to realize optimization of a whole-system output pulse; and finally, the whole system generates a stable ultra-short high speed light pulse, operation is simple and accurate control can be reached.

Description

technical field [0001] The invention belongs to the technical field of optical communication devices, and in particular relates to a digital optical pulse generation device utilizing piezoelectric ceramic feedback control. Background technique [0002] With the rapid development of the national economy and the arrival of the information age, optical fiber communication technology has penetrated into various communication and information networks. Fiber lasers are ideal light sources for fiber optic communications and have many advantages over traditional solid-state lasers, and have been extensively studied in recent years. Mode-locked fiber lasers in fiber lasers are ideal for pulsed light sources in optical communication systems. [0003] Common structures of mode-locked fiber lasers include active mode-locked and passive mode-locked fiber lasers. Among them, the active mode-locked fiber laser has narrow output pulse width, small frequency chirp and tunable frequency, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/11H01S3/067H01S3/107
CPCH01S3/06716H01S3/06725H01S3/107H01S3/1109
Inventor 霍佳雨李志军高博郭玉彬孙铁刚
Owner JILIN UNIV
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