| Citation: | LIN Zi-han, CAO Zhi-gang, CHEN Jia-ming, FANG Chong-xu, CHENG Rui, WANG Xing-yun, WANG Xu, LIU Peng, CAO Jian-bo, LIN Ji-ping. Low-noise linear-polarization fiber laser with polarization adjusted parity-time symmetry in a linear reflection structure[J]. Chinese Optics. doi: 10.37188/CO.EN-2026-0009
|
A low-noise linear-polarization single longitudinal mode (SLM) fiber laser based on polarimetric parity-time (PT) symmetry is proposed and experimentally demonstrated. PT symmetry is achieved within a linear reflection structure. When the balanced gain–loss contrast surpasses the coupling coefficient, the condition for PT-symmetry breaking is met, enabling the realization of an SLM laser. Stable laser output with a high sidemode suppression ratio (SMSR) of 62.6 dB and a high optical signal-to-noise ratio (OSNR) of 64.32 dB is realized. The Lorentz linewidth is measured as 182.5 Hz. The degree of polarization (DOP) and polarization extinction ratio (PER) of the laser remain above 99.8 % and 30.8 dB within 4 hours. Furthermore, the relative intensity noise (RIN) and phase noise of the PT-symmetric laser are analyzed and compared with those of fiber lasers and semiconductor lasers. The results demonstrate the low-noise performance of the proposed PT-symmetric laser.
| [1] |
CHEN X CH, DAI G Y, WU S H, et al. Coherent high-spectral-resolution lidar for the measurement of the atmospheric Mie–Rayleigh–Brillouin backscatter spectrum[J]. Optics Express, 2022, 30(21): 38060-38076. doi: 10.1364/OE.471155
|
| [2] |
ZHANG J J, YAO J P. Parity-time–symmetric optoelectronic oscillator[J]. Science Advances, 2018, 4(6): eaar6782. doi: 10.1126/sciadv.aar6782
|
| [3] |
ZHANG J J, LI L ZH, WANG G Y, et al. Parity-time symmetry in wavelength space within a single spatial resonator[J]. Nature Communications, 2020, 11(1): 3217. doi: 10.1038/s41467-020-16705-8
|
| [4] |
HU H, OXENLØWE L K. Chip-based optical frequency combs for high-capacity optical communications[J]. Nanophotonics, 2021, 10(5): 1367-1385. doi: 10.1515/nanoph-2020-0561
|
| [5] |
SUN H, WU K T, ROBERTS K. Real-time measurements of a 40 Gb/s coherent system[J]. Optics Express, 2008, 16(2): 873-879. doi: 10.1364/fio.2008.fwh3
|
| [6] |
HERVÁS J, RICCHIUTI A L, LI W, et al. Microwave photonics for optical sensors[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2017, 23(2): 327-339. doi: 10.1109/JSTQE.2017.2651117
|
| [7] |
PREDEHL K, GROSCHE G, RAUPACH S M F, et al. A 920-kilometer optical fiber link for frequency metrology at the 19th decimal place[J]. Science, 2012, 336(6080): 441-444. doi: 10.1126/science.1218442
|
| [8] |
TSUKAMOTO S, LY-GAGNON D S, KATOH K, et al. Coherent demodulation of 40-Gbit/s polarization-multiplexed QPSK signals with 16-GHz spacing after 200-km transmission[C]. Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, Optica Publishing Group, 2005: PDP29.
|
| [9] |
GUAN X CH, YANG CH SH, QIAO T, et al. High-efficiency sub-watt in-band-pumped single-frequency DBR Tm3+-doped germanate fiber laser at 1950 nm[J]. Optics Express, 2018, 26(6): 6817-6825. doi: 10.1364/OE.26.006817
|
| [10] |
LI Y J, HUANG L G, GAO L, et al. Optically controlled tunable ultra-narrow linewidth fiber laser with Rayleigh backscattering and saturable absorption ring[J]. Optics Express, 2018, 26(21): 26896-26906. doi: 10.1364/OE.26.026896
|
| [11] |
ZHANG J L, YUE CH Y, SCHINN G W, et al. Stable single-mode compound-ring erbium-doped fiber laser[J]. Journal of Lightwave Technology, 1996, 14(1): 104-109. doi: 10.1109/50.476143
|
| [12] |
HAO L Y, WANG X H, JIA K P, et al. Narrow-linewidth single-polarization fiber laser using non-polarization optics[J]. Optics Letters, 2021, 46(15): 3769-3772. doi: 10.1364/OL.434307
|
| [13] |
LI L ZH, CAO Y, ZHI Y Y, et al. Polarimetric parity-time symmetry in a photonic system[J]. Light: Science & Applications, 2020, 9(1): 169.
|
| [14] |
FAN ZH Q, ZHANG W F, QIU Q, et al. Observation of PT-symmetry in a fiber ring laser[J]. Optics Letters, 2020, 45(4): 1027-1030. doi: 10.1364/OL.381106
|
| [15] |
DAI ZH, FAN ZH Q, LI P, et al. Widely wavelength-tunable parity-time symmetric single-longitudinal-mode fiber ring laser with a single physical loop[J]. Journal of Lightwave Technology, 2021, 39(7): 2151-2157. doi: 10.1109/JLT.2020.3044067
|
| [16] |
FAN ZH Q, DAI ZH, QIU Q, et al. Parity-time symmetry in a single-loop photonic system[J]. Journal of Lightwave Technology, 2020, 38(15): 3866-3873. doi: 10.1109/jlt.2020.2982911
|
| [17] |
DAI ZH, WANG ZH R, YAO J P. Dual-loop parity-time symmetric system with a rational loop length ratio[J]. Optics Letters, 2023, 48(1): 143-146. doi: 10.1364/OL.479154
|
| [18] |
DENG ZH P, LI L ZH, ZHANG J J, et al. Single-mode narrow-linewidth fiber ring laser with SBS-assisted parity-time symmetry for mode selection[J]. Optics Express, 2022, 30(12): 20809-20819. doi: 10.1364/OE.458648
|
| [19] |
LIU Y, WANG L Y, YOU Y J, et al. Single longitudinal mode parity-time symmetric Brillouin fiber laser based on lithium niobate phase modulator Sagnac loop[J]. Journal of Lightwave Technology, 2023, 41(5): 1552-1558. doi: 10.1109/JLT.2022.3224208
|
| [20] |
LIU W L, WANG M G, YAO J P. Tunable microwave and sub-terahertz generation based on frequency quadrupling using a single polarization modulator[J]. Journal of Lightwave Technology, 2013, 31(10): 1636-1644. doi: 10.1109/JLT.2013.2254699
|
| [21] |
ULRICH R, RASHLEIGH S C, EICKHOFF W. Bending-induced birefringence in single-mode fibers[J]. Optics Letters, 1980, 5(6): 273-275. doi: 10.1364/OL.5.000273
|
| [22] |
SHI J H, GUANG D, LI SH L, et al. Phase-shifted demodulation technique with additional modulation based on a 3×3 coupler and EFA for the interrogation of fiber-optic interferometric sensors[J]. Optics Letters, 2021, 46(12): 2900-2903. doi: 10.1364/OL.420655
|
| [23] |
WANG Q, SONG H Q, WANG X P, et al. Experiments and analysis of tunable monolithic 1-µm single-frequency fiber lasers with loop mirror filters[J]. Optics Communications, 2018, 410: 884-888. doi: 10.1016/j.optcom.2017.11.058
|
| [24] |
HSU C H, LAI Y T, CHEN L Y, et al. Tunable and stable single-frequency fiber laser by applying Rayleigh feedback light and saturable absorber filter[J]. Optical Fiber Technology, 2023, 79: 103333. doi: 10.1016/j.yofte.2023.103333
|
Figures(17) / Tables(1)
DownLoad:
