All-fiber narrow-linewidth ring laser with continuous and large tuning range based on microsphere resonator and fiber Bragg grating
| Autor: | Tao Zhu, Wei Huang, Ligang Huang, Xiaoting Li, Yujia Li, Feng Gao, Lei Gao, Wending Zhang, Fang Bo, Min Liu, Pengfa Chang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Physics::Optics Ring laser 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics Laser linewidth Resonator Optics Fiber Bragg grating Brillouin scattering law 0103 physical sciences Physics::Atomic Physics Fiber 0210 nano-technology business Lasing threshold |
| Zdroj: | Optics express. 26(25) |
| ISSN: | 1094-4087 |
| Popis: | We demonstrate an all-fiber single-longitudinal-mode (SLM) narrow-linewidth ring laser stabilized by a microsphere resonator and fiber Bragg gratings (FBGs) with a large continuous wavelength tuning range from 1540 nm to 1570 nm. In the experiment, stable lasing with a linewidth smaller than 5 kHz was obtained. The laser wavelength was linearly and continuously tuned in the range of 0.15 nm by increasing the pump power and discretely tuning with a step of 0.1 nm by stress-controlled FBGs. The tuning range of the proposed laser configuration was determined by the FBG, and the SLM state was ensured by the coupling between the few-mode tapered fiber and the microsphere, which was simpler in alignment than other ring lasers utilizing microresonators. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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