Mode-locked pulse generation from an all-FMF ring laser cavity

Su Chen; Weixiang Hu; Yang Xu; Yu Cai; Zhiqiang Wang; Zuxing Zhang

doi:doi:10.3788/COL201917.121405

Chinese Optics Letters, 2019, 17 (12): 121405, Published Online: Dec. 5, 2019

Mode-locked pulse generation from an all-FMF ring laser cavity Download： 777次

Su Chen Weixiang Hu Yang Xu Yu Cai Zhiqiang Wang Zuxing Zhang ^*

Author Affiliations

Advanced Photonic Technology Laboratory, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Figures & Tables

Fig. 1. Structure of the WDM-MSC.

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Fig. 2. (a) Converted ${LP}_{11}$ mode, (b) ${LP}_{11}$ mode at the FM-EDF input port, and (c) ${LP}_{11}$ mode at the FM-EDF output port.

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Fig. 3. ASE spectra under different pump powers.

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Fig. 4. Amplified spectra of the FM-EDF amplifier (a) with different pump powers of ${LP}_{11}$ mode and (b) at different signal wavelengths.

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Fig. 5. Schematic setup of our proposed all-FMF ring laser. FM-EDF: few-mode erbium-doped fiber; ISO: isolator; CNT-SA: carbon nanotube saturable absorber; OSA: optical spectrum analyzer; OSC: oscilloscope; CCD: charge coupled device; Col: collimator; PC: polarization controller.

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Fig. 6. Output mode-locked (a) pulse trains, (b) spectrum at a pump power of 340 mW.

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Fig. 7. (a) Mode-locked optical spectrum evolution with different pump powers; (b) average output power and 3 dB bandwidth versus pump power.

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Fig. 8. (a) RF spectrum of the all-FMF laser with a span of 1 GHz, (b) the fundamental peak located at the cavity repetition rate of 30.58 MHz with a resolution bandwidth of 1 Hz.

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Fig. 9. Intensity distributions of (a) APB and (b) RPB without a polarizer before and after passing a linear polarizer.

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Su Chen, Weixiang Hu, Yang Xu, Yu Cai, Zhiqiang Wang, Zuxing Zhang. Mode-locked pulse generation from an all-FMF ring laser cavity[J]. Chinese Optics Letters, 2019, 17(12): 121405.

Mode-locked pulse generation from an all-FMF ring laser cavity Download： 777次

Fig. 1. Structure of the WDM-MSC.

Fig. 2. (a) Converted ${LP}_{11}$ mode, (b) ${LP}_{11}$ mode at the FM-EDF input port, and (c) ${LP}_{11}$ mode at the FM-EDF output port.

Fig. 3. ASE spectra under different pump powers.

Fig. 4. Amplified spectra of the FM-EDF amplifier (a) with different pump powers of ${LP}_{11}$ mode and (b) at different signal wavelengths.

Fig. 5. Schematic setup of our proposed all-FMF ring laser. FM-EDF: few-mode erbium-doped fiber; ISO: isolator; CNT-SA: carbon nanotube saturable absorber; OSA: optical spectrum analyzer; OSC: oscilloscope; CCD: charge coupled device; Col: collimator; PC: polarization controller.

Fig. 6. Output mode-locked (a) pulse trains, (b) spectrum at a pump power of 340 mW.

Fig. 7. (a) Mode-locked optical spectrum evolution with different pump powers; (b) average output power and 3 dB bandwidth versus pump power.

Fig. 8. (a) RF spectrum of the all-FMF laser with a span of 1 GHz, (b) the fundamental peak located at the cavity repetition rate of 30.58 MHz with a resolution bandwidth of 1 Hz.

Fig. 9. Intensity distributions of (a) APB and (b) RPB without a polarizer before and after passing a linear polarizer.

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Mode-locked pulse generation from an all-FMF ring laser cavity Download： 777次

Fig. 1. Structure of the WDM-MSC.

Fig. 2. (a) Converted LP11 mode, (b) LP11 mode at the FM-EDF input port, and (c) LP11 mode at the FM-EDF output port.

Fig. 3. ASE spectra under different pump powers.

Fig. 4. Amplified spectra of the FM-EDF amplifier (a) with different pump powers of LP11 mode and (b) at different signal wavelengths.

Fig. 5. Schematic setup of our proposed all-FMF ring laser. FM-EDF: few-mode erbium-doped fiber; ISO: isolator; CNT-SA: carbon nanotube saturable absorber; OSA: optical spectrum analyzer; OSC: oscilloscope; CCD: charge coupled device; Col: collimator; PC: polarization controller.

Fig. 6. Output mode-locked (a) pulse trains, (b) spectrum at a pump power of 340 mW.

Fig. 7. (a) Mode-locked optical spectrum evolution with different pump powers; (b) average output power and 3 dB bandwidth versus pump power.

Fig. 8. (a) RF spectrum of the all-FMF laser with a span of 1 GHz, (b) the fundamental peak located at the cavity repetition rate of 30.58 MHz with a resolution bandwidth of 1 Hz.

Fig. 9. Intensity distributions of (a) APB and (b) RPB without a polarizer before and after passing a linear polarizer.

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Fig. 2. (a) Converted ${LP}_{11}$ mode, (b) ${LP}_{11}$ mode at the FM-EDF input port, and (c) ${LP}_{11}$ mode at the FM-EDF output port.

Fig. 4. Amplified spectra of the FM-EDF amplifier (a) with different pump powers of ${LP}_{11}$ mode and (b) at different signal wavelengths.