19 December 2013 An optical fibre laser characteristics measuring system
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An optical fibre laser characteristic measuring system is presented in this paper. Measurement parameters include laser linewidth, relative intensity noise (RIN) and output power. Homodyne analysis method is used to achieve linewidth which resolution of linewidth can reach 1kHz. Quantization noise of the RIN is decreased greatly. And RIN measuring lower limit reaches -120dB/Hz. Digital Potentiometer is adopted in the detection circuit to adapt to high range of laser power.
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Jiasheng Ni, Chang Wang, Lei Zhang, Jian Guo, Haifeng Qi, Zhihui Sun, Meng Wang, G. D. Peng, "An optical fibre laser characteristics measuring system", Proc. SPIE 9046, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 90461H (19 December 2013); doi: 10.1117/12.2042047; https://doi.org/10.1117/12.2042047

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