Author Affiliations
1State Key Laboratory of Energy Photon-Technology in Western China, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi’an 710127, China2Shaanxi Engineering Technology Research Center for Solid State Lasers and Application, Provincial Key Laboratory of Photo-Electronic Technology, Northwest University, Xi’an 710069, China3e-mail: lubaole1123@163.com4e-mail: baijt@nwu.edu.cnshow less
Fig. 1. Schematic of hybrid amplitude modulation actively and passively all-polarization-maintaining erbium-doped mode-locked fiber laser. (PM, polarization-maintaining; LD, laser diode; WDM, wavelength-division multiplexer; EDF, erbium-doped fiber; OC, optical coupler; PC, polarization controller; ISO, isolator.)
Fig. 2. (a)–(c) Output oscilloscope traces, (d)–(f) time-averaged spectra, and (g)–(i) RF spectra of the mode-locked fiber laser as frequency detuning increases. (a), (d), (g) Doubly periodic mode-locking; (b), (e), (h) fundamental mode-locking; (c), (f), (i) second-harmonic mode-locking.
Fig. 3. Mode-locked pulses under a single Q-switched envelope: (a) doubly periodic Q-switched mode-locked pulse; (b) fundamental Q-switched mode-locked pulse; (c) second-harmonic Q-switched mode-locked pulse.
Fig. 4. Numerical simulation plots of fundamental mode-locking (a) time domain, (b) frequency domain, and (c) peak values under different detuning conditions with fd=0.0, −0.5, −1.5, and −2.5 MHz.
Fig. 5. Numerical simulation plots of doubly periodic mode-locking (a) time domain, (b) frequency domain, and (c) peak values under different detuning conditions with fd=0.0, −0.25, −0.75, and −1.25 MHz.
Variable | Value | Variable | Value | Variable | Value |
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| | | | | | | | | 5 | | 130 pJ | | | | 13 nm | | 8 V | | 2.75 V | | Varying (Hz) | | 12.24 MHz | | 30° | | 45° | | Varying |
|
Table 1. Parameters in the Numerical Simulation of Hybrid Amplitude Modulation Actively and Passively Erbium-Doped Mode-Locked Fiber Laser