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21 March 2023 2 μm high repetition frequency active mode-locked pulsed fiber laser and digital modulation
Sui Lu, Baoqun Li, Siluin Du, Tianshu Wang
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Proceedings Volume 12595, Advanced Fiber Laser Conference (AFL2022); 125950F (2023) https://doi.org/10.1117/12.2667013
Event: Advanced Fiber Laser Conference (AFL2022), 2022, Changsha, China
Abstract
A 2 μm band active mode-locked fiber laser with 3 m thulium-holmium co-doped fiber as gain medium is reported. According to the cavity length, the fundamental frequency is 12.24 MHz and two MZM modulators are used to obtain pulse sequences and spectrum of different repetition frequencies. When the stable repetition frequency is 489.7 MHz, the signal-to-noise ratio is 62.32 dB and the 3 dB bandwidth is 0.09 nm. A mode-locked pulse carrier of 489.7 Mb/s was obtained by synchronous digital modulation, the signal-to-noise ratio of the measured eye image was 11.1 dB.
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Sui Lu, Baoqun Li, Siluin Du, and Tianshu Wang "2 μm high repetition frequency active mode-locked pulsed fiber laser and digital modulation", Proc. SPIE 12595, Advanced Fiber Laser Conference (AFL2022), 125950F (21 March 2023); https://doi.org/10.1117/12.2667013
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KEYWORDS
Mode locking
Repetition frequency
Fiber lasers
Modulation
Pulsed laser operation
Digital modulation
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