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Application of ATA-2021H High Voltage Amplifier in the Research of Scanning Fiber Laser

发布:2021-09-13

Experiment Name: Application of High-Voltage Amplifier in the Research of Novel Narrow Linewidth Wavelength Scanning Fiber Laser

The purpose of the experiment: according to the simulation parameters to build the DCR-CC filter and verify the experiment. And built a single longitudinal mode narrow linewidth wavelength scanning fiber laser based on DCR-CC filter and C+L band EDFA and explored its performance.

Experimental equipment: filter, function generator, high-voltage amplifier ATA-2021H, etc.

experiment procedure:

1. DCR-CC construction and characterization;

Application

      The DCR-CC filter was built with the parameters of cavity lengths of 50.70 cm and 52.00 cm, respectively, and the filtering performance of the DCR-CC filter was measured using the system shown in the figure.

2. Realization of laser gain range in C+L band;

     The structure of the proposed C+L band single longitudinal mode narrow linewidth wavelength scanning fiber laser is shown in the figure. The two parts are connected in parallel through two CL-band wavelength division multiplexers. A self-made DCR-CC composite resonator filter is used as a wide-range filter element to filter SLM from the dense main cavity longitudinal mode, and an FFP-TF is used as a wavelength scanning element. It consists of a function generator and a high-voltage amplifier ATA- Driven by 2021H. The FFP-TF and other devices in the dashed frame can be replaced by Cir-2 and replacement FBG to measure the static laser output performance of the laser.

Application

Experimental results:

1. The figure shows the mid-term laser operation stability of the four wavelengths within 60 minutes. The measurement is performed by using OSA repetitive scanning with a resolution of 0.02 nm and a data collection interval of 0.001 nm. It can be seen from the figure that the wavelength fluctuation f (i=1,2,3,4) of the four lasers is very small, the maximum is 0.006 nm, and the power fluctuation f, (i=1,2,3,4) Very low, the maximum value is 0.704 dB, and its signal-to-noise ratio OSNR is higher than 66 dB.

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2. The self-homodyne method measures the beat spectrum measured by ESA under different scanning frequencies.

Application

 

       The high-voltage amplifier ATA-2021H used in the experiment has a maximum output of 200Vp-p (±100Vp) high voltage and can drive high-voltage loads. The voltage gain is digitally adjustable, one-key save settings, provides convenient and simple operation options, and can be used with mainstream signal generators to achieve perfect signal amplification.

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Experimental results:

       For the FDML wavelength scanning laser, the performance of the laser can be further improved by increasing the gain and using a high-speed tunable filter with a narrower bandwidth. Designing a composite resonator filter that is more suitable for the FDML mechanism is expected to further improve the longitudinal mode characteristics of the laser.

     The experimental materials of this article are organized and released by Xi'an Antai Electronics. If you want to know more experimental programs, please continue to pay attention to the official website of Antai Electronics www.aigtek.com. Aigtek is a domestic high-tech enterprise specializing in the research and development, production and sales of measuring instruments. It has been focusing on the research and development and manufacturing of high-voltage amplifiers, wiring harness testers, measurement calibration sources and other test instrument products.

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