High-Power and Low RIN Performance of a 1.55 m DFB Laser for 10 Gb/s Satellite Optical Links

IEEE ELECTRON DEVICE LETTERS(2024)

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摘要
In this letter, we present a 1.55-mu m DFB laser that possesses characteristics including high power, low noise, and high-speed direct modulation capabilities across a wide temperature range. The DFB laser demonstrates an optical power of 125.76-mW and sustains power exceeding 45-mW, with an SMSR surpassing 45 -dB at 85 degrees C. It exhibits the ability to modulate signals at frequencies exceeding 5.26-GHz and transmits a clear 10-Gb/s eye pattern. The RIN maintains as low as -153.51-dB/Hz within the dynamic range of 0-10-GHz, and even with the operating temperature increases, it still stays impressively low at141.47-dB/Hz. Consequently, these outcomes indicate the 1.55-mu m DFB laser offers several advantages, reinforcing its potential as a promising device for satellite optical links.
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关键词
Optical fiber communication,Semiconductor lasers,Modulation,High-speed optical techniques,Optical modulation,Lasers,Power lasers,DFB laser,high power,low RIN,GHz-level modulation,analog optical link,satellite optical communication
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