Shiyu Lu, Qing Hao, Tingting Liu, Fei Chen, Xinyi Ren, Xuling Shen, Ming Yan, Heping Zeng. All Polarization Maintaining Fiber-Based Optical Comb System with Nonlinear Loop Mirror Mode-Locking[J]. Chinese Journal of Lasers, 2021, 48(21): 2101002
- Chinese Journal of Lasers
- Vol. 48, Issue 21, 2101002 (2021)
Fig. 1. Optical path device and application device. (a)--(d) Each part of optical path device; (e) application device
Fig. 2. Experimental results. (a) Supercontinuum; (b) f0 signal; (c) linewidth of f0 when free running and locking (illustration); (d) spectrum broadening
Fig. 3. System device. (a) Feedback control diagram; (b) phase lock circuit; (c) temperature control device
Fig. 4. Frequency drift of fr and f0. (a) Frequency drift of fr with and without water cooling; (b) frequency drift of f0 with water cooling; (c) relationship between SNR of f0 and LD current
Fig. 5. Results of feedback control. (a) Frequency drift of fr with temperature feedback; (b) frequency drift of f0 with LD current feedback; (c) variation of TCu2 and TEC2 temperature; (d) variation of LD current
Fig. 6. Results of fr and f0 measurement. (a) Frequency counts; (b) Allan deviation
Fig. 7. Gas absorption spectrum. (a) Absorption spectrum of H2O; (b) absorption spectrum of 12CO; (c) comparison of absorption spectrum of 12C2H2 with HITRAN database
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