Linewidth Characteristics of Wavelength-Tunable Narrow Linewidth Lasers

Zhiyu Feng; Yu Cheng; Libo Yuan; Litong Li; Sumei Huang; Jing Li

doi:10.3788/LOP202259.2114003

Laser & Optoelectronics Progress, Volume. 59, Issue 21, 2114003(2022)

Linewidth Characteristics of Wavelength-Tunable Narrow Linewidth Lasers

Zhiyu Feng^1,2, Yu Cheng^1,2、*, Libo Yuan^1,2, Litong Li³, Sumei Huang⁴, and Jing Li⁴

¹College of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China

²Guangxi Key Laboratory of Optoelectronic Information Processing, Guilin 541004, Guangxi, China

³State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fiber and Cable Joint Stock Limited Company, Wuhan 430073, Hubei, China

⁴Han's Laser Technology Industry Group Co., Ltd., Shenzhen 518000, Guangdong, China

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Figures & Tables(7)

Fig. 1. Experimental system for the optical fiber delay self-heterodyne linewidth measurement

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Fig. 2. Power spectrum curve of photocurrent. (a) VBW is 3 MHz; (b) VBW is 51 Hz

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Fig. 3. Power spectrum and Lorentz fitting curve collected by signal analyzer

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Fig. 4. Linewidth measurement results for different RBW

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Fig. 5. Measurement results of dynamic linewidth

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Fig. 6. Linewidth measurement results for different wavelength

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Table 1. Measurement results of steady-state linewidth
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Table 1. Measurement results of steady-state linewidth
Line width /dB $Δ ν$ /kHz
Measurement of SA Lorentz fitting value
-3 725.00 720.80
-10 408.33 467.13
-20 212.00 232.24

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Zhiyu Feng, Yu Cheng, Libo Yuan, Litong Li, Sumei Huang, Jing Li. Linewidth Characteristics of Wavelength-Tunable Narrow Linewidth Lasers[J]. Laser & Optoelectronics Progress, 2022, 59(21): 2114003

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