A continuously tunable Q-switched all-fiber Er-doped laser based on a 45° tilted fiber grating and tunable bandpass filter is demonstrated. The 45° tilted fiber grating is used to achieve the nonlinear polarization rotation (NPR) along with two polarization controllers (PCs), Q-switching is realized due to the fact that the NPR effect induced intensity-dependent loss. Under the pump power of 655 mW, the Q-switched optical spectrum can be continuously tuned from 1512 nm to 1552 nm by simply rotating the tunable bandpass filter. During the wavelength tuning process, the average output power increases from 0.282 mW to 4.884 mW while the repetition rate enhances from 27.3 kHz to 119 kHz. To the best of our knowledge, this is the widest continuously tunable range of Q-switched fiber Lasers based on nonlinear polarization rotation effect and spectral bandpass filter.
Wavelength-tunable Q-switched fiber laser based on a 45° tilted fiber grating
First published at:Oct 01, 2018
1 Mears R J, Reekie L, Poole S B, et al. Low-threshold tunable CW and Q-switched fibre laser operating at 1.55μm[J]. Electronics Letters, 1986, 22(3): 159-160. DOI:10.1049/el:19860111
2 Luo Z Q, Liu C, Huang Y Z, et al. Topological-insulator passively Q-switched double-clad fiber laser at 2μm wavelength[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2014, 20(5): 1-8. DOI:10.1109/JSTQE.2014.2305834
3 Wang L, Gao C Q, Gao M W, et al. A resonantly-pumped tunable Q-switched Ho: YAG ceramic laser with diffraction-limit beam quality[J]. Optics Express, 2014, 22(1): 254-261. DOI:10.1364/OE.22.000254
4 Sharma U, Kim C S, Kang J U, et al. Highly stable tunable dual-wavelength Q-switched fiber laser for DIAL applications[C]//Proceedings of 2004 Laser Applications to Chemical and Environmental Analysis, Annapolis, Maryland United States, 2004: 1277-1279.
5 Chernikov S V, Zhu Y, Taylor J R, et al. Supercontinuum self-Q-switched ytterbium fiber laser[J]. Optics Letters, 1997, 22(5): 298-300. DOI:10.1364/OL.22.000298
6 Dong B, Hao J Z, Hu J H, et al. Wide pulse-repetition-rate range tunable nanotube Q-switched low threshold erbium-doped fiber laser[J]. IEEE Photonics Technology Letters, 2010, 22(24): 1853-1855.
7 Pérez-Millán P, Cruz J L, Andrés M V. Active Q-switched distributed feedback erbium-doped fiber lasers[J]. Applied Physics Letters, 2005, 87(1): 011104. DOI:10.1063/1.1990252
8 Delgado-Pinar M, Díez A, Cruz J L, et al. Single-frequency active Q-switched distributed fiber laser using acoustic waves[J]. Applied Physics Letters, 2007, 90(17): 171110. DOI:10.1063/1.2732832
9 Keller U, Weingarten K J, Kartner F X, et al. Semiconductor saturable absorber mirrors (SESAM's) for femtosecond to nanosecond pulse generation in solid-state lasers[J]. IEEE Journal of Selected Topics in Quantum Electronics, 1996, 2(3): 435-453. DOI:10.1109/2944.571743
10 Li J F, Hudson D D, Liu Y, et al. Efficient 2.87 μm fiber laser passively switched using a semiconductor saturable absorber mirror[J]. Optics Letters, 2012, 37(18): 3747-3749. DOI:10.1364/OL.37.003747
11 Filippov V N, Starodumov A N, Kir'yanov A V. All-fiber passively Q-switched low-threshold erbium laser[J]. Optics Letters, 2001, 26(6): 343-345. DOI:10.1364/OL.26.000343
12 Laroche M, Chardon A M, Nilsson J, et al. Compact diode-pumped passively Q-switched tunable Er-Yb double-clad fiber laser[J]. Optics Letters, 2002, 27(22): 1980-1982. DOI:10.1364/OL.27.001980
13 Zhou D P, Wei L, Dong B, et al. Tunable passively Q-switched erbium-doped fiber laser with carbon nanotubes as a saturable absorber[J]. IEEE Photonics Technology Letters, 2010, 22(1): 9-11. DOI:10.1109/LPT.2009.2035325
14 Cao W J, Wang H Y, Luo A P, et al. Graphene-based, 50 nm wide-band tunable passively Q-switched fiber laser[J]. Laser Physics Letters, 2011, 9(1): 54-58. DOI:10.1002/lapl.201110085
15 Luo Z C, Liu J R, Wang H Y, et al. Wide-band tunable passively Q-switched all-fiber ring laser based on nonlinear polarization rotation technique[J]. Laser Physics, 2012, 22(1): 203-206. DOI:10.1134/S1054660X11230125
16 Wang T X, Yan Z J, Mou C B, et al. Stable nanosecond passively Q-switched all-fiber erbium-doped laser with a 45° tilted fiber grating[J]. Applied Optics, 2017, 56(12): 3583-3588. DOI:10.1364/AO.56.003583
17 Yan Z J, Mou C B, Zhou K M, et al. UV-inscription, polarization-dependant loss characteristics and applications of 45° tilted fiber gratings[J]. Journal of Lightwave Technology, 2011, 29(18): 2715-2724. DOI:10.1109/JLT.2011.2163196
18 Yan Z J, Mou C B, Wang H S, et al. All-fiber polarization interference filters based on 45°-tilted fiber gratings[J]. Optics Letters, 2012, 37(3): 353-355. DOI:10.1364/OL.37.000353
19 Zhou K M, Cheng X F, Yan Z J, et al. Optical Spectrum Analyzer using a 45° tilted fiber grating[C]//Proceedings of 2012 Advanced Photonics Congress, Colorado Springs, Colorado, United States, 2012: BW2E. 7.
20 Yan Z J, Mou C B, Sun Z Y, et al. Hybrid tilted fiber grating based refractive index and liquid level sensing system[J]. Optics Communications, 2015, 351: 144-148. DOI:10.1016/j.optcom.2015.04.038
21 Zhou K M, Simpson G, Chen X F, et al. High extinction ratio in-fiber polarizers based on 45° tilted fiber Bragg gratings[J]. Optics Letters, 2005, 30(11): 1285-1287. DOI:10.1364/OL.30.001285
22 Renaud C C, Selvas-Aguilar R J, Nilsson J, et al. Compact high-energy Q-switched cladding-pumped fiber laser with a tuning range over 40 nm[J]. IEEE Photonics Technology Letters, 1999, 11(8): 976-978. DOI:10.1109/68.775318
23 Fan Y X, Lu F Y, Hu S L, et al. Tunable high-peak-power, high-energy hybrid Q-switched double-clad fiber laser[J]. Optics Letters, 2004, 29(7): 724-726. DOI:10.1364/OL.29.000724
24 Popa D, Sun Z, Hasan T, et al. Graphene Q-switched, tunable fiber laser[J]. Applied Physics Letters, 2011, 98(7): 073106. DOI:10.1063/1.3552684
25 Chen Y, Zhao C J, Chen S Q, et al. Large energy, wavelength widely tunable, topological insulator Q-switched erbium-doped fiber laser[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2014, 20(5): 315-322. DOI:10.1109/JSTQE.2013.2295196
26 Huang Y Z, Luo Z Q, Li Y Y, et al. Widely-tunable, passively Q-switched erbium-doped fiber laser with few-layer MoS2 saturable absorber[J]. Optics Express, 2014, 22(21): 25258-25266. DOI:10.1364/OE.22.025258
27 Woodward R I, Kelleher E J R, Howe R C T, et al. Tunable Q-switched fiber laser based on saturable edge-state absorption in few-layer molybdenum disulfide (MoS2)[J]. Optics Express, 2014, 22(25): 31113-31122. DOI:10.1364/OE.22.031113
28 Mou C B, Zhou K M, Zhang L, et al. Characterization of 45°-tilted fiber grating and its polarization function in fiber ring laser[J]. Journal of the Optical Society of America B, 2009, 26(10): 1905-1911. DOI:10.1364/JOSAB.26.001905
29 Hönninger C, Paschotta R, Morier-Genoud F, et al.Q-switching stability limits of continuous-wave passive mode locking[J]. Journal of the Optical Society of America B, 1999, 16(1): 46-56. DOI:10.1364/JOSAB.16.000046
Supported by National Natural Science Foundation of China (NSFC) (61605107, 61505244), Young Eastern Scholar Program at Shanghai Institutions of Higher Learning (QD2015027), and "Young 1000 Talent Plan" Program of China
Get Citation: Hu Xiaolin, Yan Zhijun, Huang Qianqian, et al. Wavelength-tunable Q-switched fiber laser based on a 45° tilted fiber grating[J]. Opto-Electronic Engineering, 2018, 45(10): 170741.